Geography and Biology High School Examination Questions

1. Multiple-choice questions

1. Which of the following plants has sexual reproduction? ( )

A. The leaves of peppergrass can grow into new ones. Plant B. Sunflowers reproduce through seeds

C. Roses can be propagated by cuttings from branches D. Sets can be grafted to propagate fine varieties

2. Three apple trees grow on one Planting apples with different flavors must go through ( )

A. Self-pollination B. Layering propagation C. Grafting propagation D. Cutting propagation

3. Which of the following parts does a plant seed have? Developed ( )

A. Fertilized egg B. Fertilized polar nucleus C. Ovule D. Ovary

4. When Zhang Mei practiced bud grafting, the grafted buds did not survive. , the most likely reason is which part of the scion and rootstock are not close together ( )

A. Phloem B. Cambium C. Xylem D. Pith

5. Locust The process of incomplete metamorphosis is ( )

A. Egg nymph pupa adult B. Egg nymph adult

C. Egg larvae adult pupa D. Egg larvae pupa adult< /p>

6. Some insects in nature need to molt multiple times during their development. For example, locusts need to molt five times to develop into adults.

So the reason why they shed their skin is ( )

A. To adapt to overheated weather B. To release their restraints and grow rapidly

C. To escape from enemies D. The need for hibernation

7. Which of the following statements about amphibians is correct ( )

A. Animals that can live in both water and land

B. Amphibians can Adapt to dry land environment

C. Larvae live in water and breathe with gills; adults live on land and breathe with lungs

D. Fertilization must be carried out in water, and adults must Prey on land

8. In spring, male frogs and female frogs embrace each other, which is a reproductive behavior. The biological significance of this phenomenon is ( )

A. They are mating B . The male is courting the female

C. In order to occupy the breeding space D. Increase the chance of sperm and egg union

9. The development process of amphibians is ( )

A. Incomplete metamorphosis B. Metamorphosis

C. In vivo development D. Complete metamorphosis

10. The characteristics of frog reproduction are ( )

A. Hermaphroditism, internal fertilization, internal development B. Hermaphrodite, external fertilization, external development

C. Dioecious, internal fertilization, development in water D. Dioecy, external fertilization, development in water

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11. The nucleus of bird eggs is found in ( )

A. In the blastoderm B. In the yolk C. In the egg white D. In the egg shell

12. Two A red-crowned crane dances in the shallows near the water. This behavior belongs to ( )

A. Food hoarding behavior B. Rhythmic behavior C. Reproductive behavior D. Social behavior

13. Not yet A fertilized egg is an egg cell, and the cell membrane is located in ( )

A. Egg shell B. Egg shell membrane C. Egg white D. Vitelline membrane

14. Which of the following groups of plants are commonly used for cuttings? Method for propagation ( )

A. Cabbage, radish, potato B. Grape, chrysanthemum, rose

C. Oleander, pomegranate, osmanthus D. Apple tree, pear tree, Apricot tree

15. Insert a branch of the pothos into the water, and roots will soon grow out and grow upward into a complete plant. This method of reproduction belongs to ( )

A. Sexual reproduction B. Spore reproduction C. Asexual reproduction D. Schizophrenia

16. When fruit farmers plant pear trees, they often graft the buds of Yali trees onto Duli trees. The stressed buds and Dulili trees are separated. It’s called ( )

A. scion and stock B. stock and scion C. scion and scion D. scion and stock

17. Which of the following animals is not an amphibian ( )

A. Giant salamander B. Turtle C. Toad D. Tree frog

18. Which of the following has nothing to do with the reproductive behavior of birds ( )

A. The mother duck chases the eagle to protect the duckling

B. Big tits tear open the cap of a milk bottle and secretly drink milk

C． Bowerbirds decorate their nests with flowers, berries and pieces of colored glass

D. Barn swallows peck the mud to make nests

19. Which of the following does not belong to the function of bird's nest ( )

A. It is helpful for parents to feed their chicks and avoid predators

B. Prevent the eggs from rolling away and forming eggs into piles

C. Maintain the optimal temperature required for the development of eggs and chicks

D. When a bird is tired from flying, it can rest in the nest

20. The animal that has the behavior of incubating eggs is ( )

A. Fish B. Amphibians C. Reptiles D. Most birds

21. The behavior of birds occupying nest areas is ( )

A. Predatory behavior B. Reproductive behavior C. Aggressive behavior D. Defensive behavior

22. The sayings "You will reap melons if you sow melons, and you will reap beans if you sow beans" and "One mother gives birth to nine sons, each of whom is different" respectively describe which characteristics of living things ( )

A. Heredity and Reproduction B. Heredity and Variation C. Reproduction

Reproduction and evolution D. Development and reproduction

23. Among the following traits, which one is a relative trait ( )

A. The fine and long velvet of cotton B. Human height and weight

C. Rabbit’s long hair and short hair D. Cat’s white hair and dog’s black hair

24. The changes in the following traits are not controlled by genes ( )

A. A normal couple gave birth to a child with albinism

B. Ordinary white mice give birth to genetically modified super mice

C. The yellow leaves of leek and the green leaves of leek

D. Sweet corn ears produce non-sweet corn kernels

25. Which of the following statements about genes is incorrect ( )

A. It is a DNA fragment that determines biological traits

B. There are explicit and implicit differences

C. Exist in pairs on the chromosomes of somatic cells

D. Pairs exist on the chromosomes of sperm

26. In the process of sexual reproduction, the "bridge" for gene transmission between parent and child is ( )

A. Nerve cells B. Muscle cells C. Germ cells D. Somatic cells

27. In Mendel’s pea hybridization experiment, after the seeds produced by the cross between tall peas and short peas were planted, the plants that grew were is high, the incorrect explanation for this phenomenon is ( )

A. Tallness and shortness in peas are a pair of relative traits. Tallness is dominant, shortness is recessive, and hybridization results in tallness

B. The relative traits of height and shortness are controlled by dominant genes and recessive genes respectively

C. The gene expressing the dwarf trait was lost in the cross

D. The genotype of the tall pea produced after crossing can be represented by Dd

28. The scientific reason why my country’s Marriage Law prohibits incest marriage is ( )

A. Marriage between close relatives will inevitably lead to genetic diseases in the offspring

B. Marriage between close relatives increases the chance of offspring suffering from genetic diseases

C. Marriage between close relatives violates social ethics

D. Human genetic diseases are all controlled by recessive genes

29. Human gender is determined in ( )

A. During the formation of sperm B. During the formation of egg cells

C. During the formation of fertilized eggs D. During embryonic development

30. The composition of chromosomes in male somatic cells is ( )

A. 44+XX B. 44+XY C. 22+XX D. 22+XY

31. Which of the following mutations cannot be passed to offspring ( )

A. The short leg characteristics of Ankang sheep

B. Variations in chromosome structure and number

C. The wheat grains are many and large due to sufficient water and fertilizer

D. Gene combinations that control excellent traits are fully combined through hybridization

32. "Space pepper" and the "super rice" cultivated by Professor Yuan Longping respectively use ( )

A. Mutation breeding and hybrid breeding B. Hybrid breeding and artificial selection

C. Artificial selection and mutation breeding C. Cross breeding and mutation breeding

33. Among the following variations, which one is not heritable ( )

A. Plantains on the roadside grow thin, while plantains of the same species grow fat on the edges of fields

B. After the red-flowered purple jasmine and the white-flowered purple jasmine were pollinated, the pink-flowered purple jasmine was born

C. Transparent goldfish and opaque goldfish were hybridized to produce transparent and opaque streaky fish

D. The father’s blood type is type A and the mother’s blood type is B, but she gave birth to a child with type O blood

34. The reason why the male to female ratio of most higher animals is close to 1:1 is ( )

A. The number of male and female germ cells produced by male and female individuals is equal

B. Both male and female individuals produce equal numbers of two types of germ cells

C. The two types of germ cells produced by a male individual in equal numbers have an equal chance of combining with the germ cells produced by a female individual

D. The two types of reproductive cells produced by a female individual have an equal chance of combining with the reproductive cells produced by a male individual.

35. The offspring of a horse and a donkey.

The offspring is a mule. It is known that the somatic cells of horses contain 32 pairs of chromosomes, and that of donkeys contain 31 pairs of chromosomes. Then, the number of chromosomes in the somatic cells of a mule is ( )

A. 126 B. 62 C. 63 D. 64

36. Which of the following descriptions about sex chromosomes is correct ( )

A. Both female body cells and egg cells have only one sex chromosome

B. There are two types of sex chromosomes in male somatic cells and sperm

C. Sex chromosomes only exist in germ cells

D. Human body cells contain a pair of different sex chromosomes

37. The general process of the origin of primitive life is ( )

A. Primitive atmosphere, organic matter, primitive life

B. The main component of volcanic lava is organic matter

C. The main components of ultraviolet rays are organic matter and primitive life.

D. The main components of soil on the surface of the primitive earth were organic matter and primitive life.

38. Primitive life on earth originated from ( )

A. On primitive land or near lava B. In the primitive ocean

C. In the primitive atmosphere D. During the cooling and rainfall process

39. Based on the existing data, scientists speculate that the time when life appeared was ( )

A. About 1 billion years after the formation of the earth B. About 1 billion years after the formation of the earth

C. About 2.6 billion years after the formation of the earth D. About 3.6 billion years after the formation of the earth

40. In 1861, Archeopteryx fossils were discovered in Germany. Its body structure is similar to that of reptiles. It is also similar to birds. From this reasoning, the following conclusion can be drawn ( )

A. Reptiles evolved into birds B. Birds evolved into reptiles

C. Reptiles are related to birds D. Life originated from inorganic matter

41. In the older strata, organisms that become fossils ( )

A. The greater the number B. The richer the species C. The simpler, the lower, etc. D. The more complex, the higher, etc.

2. Data analysis

1. The gene that determines dimples in humans (D) is the dominant gene, and (d) without dimples is the recessive gene.

(1) Please complete the following genetic diagram

Father (with dimples) Mother (without dimples)

Parental genetic composition Dd dd

Genetic composition of germ cells

Genetic composition of offspring

Characteristics of offspring

(2) The probability of this couple having a child with dimples is ____________________ .

2. The composition and order of amino acids in cytochrome C of different organisms reflect the genetic relationship between these organisms. The smaller the difference, the closer the relationship; the larger the difference, the more distant the relationship. The table below shows the differences between the amino acids that make up cytochrome C in several organisms and humans.

The difference between the amino acids that make up cytochrome C in humans. The difference between the amino acids that make up cytochrome C in humans.

Chimpanzee 0 Tuna 21

Macaque 1 Drosophila 27

Dog 11 Sunflower 38

Horse 12 Neurospora 43

Chicken 13 Helicobacter 45

According to the analysis in the above table:

(1) From single-celled spiral bacteria to chimpanzees of higher vertebrates, all contain cytochrome C. This fact can be explained from the molecular level____________________________________________.

(2) From the data in the table, it can be seen that the smaller the difference between the 104 amino acids that make up cytochrome C, the more ______ the genetic relationship between organisms; the greater the difference, the more ______ the genetic relationship between organisms. _____. The closest relative to humans is ______, the closest relative is ______, and ______ is the furthest relative to humans.

(3) What methods were used to study the above biological evolution issues?

____________________________________________.

(4) By looking up information or surfing the Internet, tell us about other aspects of biological evolution that scientists study, and please give examples.

3. Picture-filling questions

1. Below is a diagram of the four insect states during the development process of armyworm. Fill in the names of the four insect states, the order and concepts of complete metamorphosis and development.

① ② ③ ④

①__________②__________③__________④__________

The sequence of complete metamorphosis is _______________________________________

The concept of complete metamorphosis is_______________________________________________

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2. The picture on the right is a schematic diagram of a domestic pigeon egg. Please answer the following questions based on the picture:

(1) Please write the names of the structures of each part

①_____________②_____________

③____________⑦_____________

(2) The site where embryonic development occurs is [ ]_____________.

(3) The structures that provide nutrients for the development of domestic pigeon fertilized eggs into embryos are [ ]_________ and [ ]_________

( 4) The reproductive process of birds can completely get rid of the restrictions of the water environment because the [ ]___________ in the egg contains a large amount of water, which allows it to produce amniotic fluid during embryonic development.

3. The picture on the right is a schematic structural diagram of a certain animal cell.

Answer the following questions based on the picture.

(1) Fill in the name of each part

A_______________

B_______________

C_______________

D_______________

E____________________

(2) E in the picture represents _________ on D. In fact, there are _________ pairs of E on a pair of D, and each pair of E controls a certain

Biology high school entrance examination simulation test questions

1. Multiple choice questions. (Each question has only one correct answer, each question is worth 1 point, maximum 18 points)

1. When observing slide specimens with a microscope, Xiao Ming used a 10× eyepiece and a 20× objective lens, and Xiao Qiang used a 10× eyepiece and a 45× objective lens.

What Xiaoqiang sees is different from Xiaoming ( )

A. The brightness of the visual field increases significantly B. The number of cells seen decreases

C. The cell image you see becomes smaller D. The field of vision is significantly expanded

2. Divide the seeds with complete and full grains into two groups, A and B, and sow them separately at 25°C. Group A is planted in fertile and moist soil, and group B is planted in barren and moist soil. The germination status of these two groups of seeds is ( )

A. B germinates first B. A germinates first C. Germinate simultaneously D. None germinate

3. Pick three leaves from the same part of the same plant in the morning, evening, and late at night. Use a hole punch to take discs of the same size, decolorize them, and treat them with iodine. The result is ( )

A ． The leaves picked in the morning are darker in blue B. The leaves picked in the evening are darker in blue

C. Leaves picked late at night have a darker blue color D. The three leaves are the same shade of blue

4. At a certain moment, the contents of three substances in the blood flowing in the arteries and veins of an organ are measured. Their relative values ??are shown in the figure on the right.

The organ is ( )

A． Lungs b. brain c. Small intestine D. Muscle

5. The following is the combination of oxygen and hemoglobin in blood in several tissues: the binding rate of tissue A is 45%, the binding rate of tissue B is 60%, the binding rate of tissue C is 75%, and the binding rate of tissue D is 85%. Among them, the metabolism is the most What is prosperous is ( )

A. Organization A B. Organization B C. Organization C D. Tissue D

6. There are three types of digestive juices A, B, and C. None of them are gastric juice or pancreatic juice. A digestive juice promotes the digestion of fat by C digestive juice. Neither A digestive juice nor B digestive juice can digest protein. And digestive juice B and digestive juice C can both digest starch, then, A. B. CThe three digestive juices are ( )

A. Intestinal juice, bile, saliva B. Saliva, intestinal juice, bile

C. Bile, saliva, intestinal juice D. Bile, intestinal juice, saliva

7. When making kimchi, a special jar must be used, and the mouth of the jar must be sealed with water. The purpose of sealing the jar mouth is ( )

A. Isolate the air and inhibit the growth of bacteria B. Prevent dust and bacteria from entering the jar and prevent contamination

C. Create an anoxic environment, which is conducive to lactic acid fermentation D. Prevent gas exchange and facilitate the respiration of acetic acid bacteria

8. People A, B, C, and D have different blood types. If type B serum is used to test, the blood of A and B can agglutinate. After a cross-matching test, A can only accept the blood of C. Based on this, it can be inferred that these four people have different blood types. The individual blood types are ( )

A. Type A, Type AB, Type B, Type O B. Type B, Type AB, Type O, Type A

C. Type A, Type AB, Type O, Type B D. Type AB, type A, type O, type B

9. In 1989, Chinese scientists successfully introduced human growth hormone genes into carp egg cells. Carp developed from such eggs grew significantly faster Speed ??up, the above facts illustrate ( )

A. Genes in cells are clearly divided into dominant and recessive B. Genes in cells exist in pairs

C. Genes exist on the chromosomes of biological cells D. Biological traits are controlled by genes

10. In an emergency, the lizard's tail can automatically break off, and the broken part can also perform flexion and extension movements. This behavior of the lizard is unique to animals ( )

A. Aggressive behavior b. defensive behavior c. Rhythmic behavior D. Social behavior

11. Biologists call for the protection of biological diversity, but experiments have proven that many wild animals carry disease-causing organisms. Do you think we should ( )

A. Capture and kill germ-carrying organisms B. Resolutely and completely kill them and quarantine them all

C. Give antibiotics to the animal kingdom D. Resolutely protect and avoid killing, stay away from close contact

12. Among the following statements about biological evolution and ecology, which one is incorrect ( )

A. Environmental factors that affect biological life are called ecological factors

B. Weeds in rice fields will compete with rice for sunlight, nutrients and water

C. When fertilizing crops and vegetables, fast-acting chemical fertilizers should be used mainly, and farmyard manure should be used in combination.

D. The reason why organisms develop from simple to complex, from aquatic to terrestrial, from low to high is natural selection

13. will grow

The same tomato seedlings were cultured in A. B. C. In the four pots D, other conditions are the same except for the different fertilization conditions. After a period of time, which pot will produce the best tomatoes ( )

A. Pots fertilized with phosphate fertilizer B. Pots with nitrogen fertilizer C. Potash fertilized pot D. Pots without fertilizer

14. Which of the following is a characteristic of pseudomyopia ( )

A. The anteroposterior diameter of the eyeball becomes shorter and the image is formed behind the retina

B. The curvature of the lens is too small and the refractive power is too weak

C. The front-to-back diameter of the eyeball is too long, and the object image falls in front of the retina

D. The adjustment structure of the eyeball is too tight and the refractive power is too strong

15. When children take polio vaccine sugar pills, the vaccine they receive and the immunity they produce are ( )

A. Antigen, specific immunity B. Antibodies, specific immunity

C. Antigen, non-specific immunity D. Antibodies, non-specific immunity

16. Crucian carp keeps swallowing water in the water, and its main function is ( )

A. Strain food B. Adjust density C. Balance the body D. Breathe

17. The figure on the right shows the relationship between the oxygen consumption of animals A and B and the ambient temperature. Which of the following statements is correct ( )

A. A and B are both guinea pigs B. A and B are both frogs

C. A is a frog, B is a mouse D. A is a mouse and B is a frog

18. Both bryophytes and ferns must live in a humid environment, mainly because ( )

A. Roots have poor ability to absorb and retain water B. The conductive tissue is underdeveloped

C. Photosynthesis requires water D. The fertilization process is inseparable from water

[1]

Needless to say the green vegetable beds, the smooth stone well fences, the tall honey locust trees, and the purple mulberries; nor the singing cicadas in the leaves. With a long chant, the fat wasp lay on the cauliflower, and called the emperor suddenly and suddenly jumped from the grass into the sky. "Answer questions 1 to 5.

1. The above paragraph contains several creatures

2. A, 4 B, 5 C, 6 D, 7

< p>2. Leaves and mulberries belong to

A. Tissue B. Organ C. System D. Plant body

3. Which of the following is not an organism such as honey locust tree, cicada, or emperor? Basic characteristics

A. Need nutrients B. Respiration C. Growth and reproduction D. Reflection

4. The honey locust tree uses light energy to synthesize starch from carbon dioxide and water in the chloroplasts. The process of waiting for organic matter and storing energy is called

A. Photosynthesis B. Respiration C. Transpiration D. Diffusion

5. If this is an ecosystem, start from the perspective of the ecosystem. The composition is still lacking

A. Non-biological components B. Producers C. Consumers D. Decomposers

In 1665, the British physicist Robert Hooke cut cork into thin slices. Under the optical microscope with a magnification of 140 times that he made, he was surprised to find that there were many honeycomb-shaped cells on the cork sheet, which he called cells. From then on, people's understanding of the structure of living organisms entered the microscopic field of cells.

Please answer questions 6-10

6. The basic structure of a cell is cell membrane, cytoplasm, and nucleus. However, some cells are very special. For example, the most common blood cells in human blood have no nucleus when mature. They are: < /p>

A. Red blood cells B, white blood cells C, platelets D, plasma

7. The main component of "queer" is fresh juice. You can get juice by squeezing the fruit. These juices mainly come from Which part of the cell structure

A. Cytoplasm B. Vacuole C. Cell membrane D. Mitochondria

8. The unique structure of cuckoo (a plant) and cuckoo bird is< /p>

A. Nucleus B. Vacuole C. Chloroplast D. Cell wall

9. The fundamental reason why you can grow up smartly is

A. Cell Division B. Cell growth C. Cell division and growth D. Cell differentiation

10. Microscopes are often used to observe cells. Use the following four microscopes to observe onion epidermal cells. Which microscope has the largest number of cells in the field of view? Stage

Microscope serial number

Eyepiece

Objective lens

1

5X

8X

2

10X

40X

3

15X

10X

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4

20X

15X

A, 1 B, 2 C, 3 D, 4

11, Among the basic tissues of the human body, those with functions of support, connection, protection, and nutrition are

A. Epithelial tissue B. Muscle tissue C. Connective tissue D. Nervous tissue

12. The following Among the common plants, those that belong to gymnosperms are

A, rice B, broad bean C, peach tree D, ginkgo

13. Use a blade to cut the soaked corn seeds longitudinally from the center Open, drop a drop of iodine solution on the cross section, and then use a magnifying glass to carefully observe the structures stained blue by iodine: A, endosperm B, testa C, germ D, cotyledons

14. The main parts of the root that absorb water are

A, root cap B, elongation zone C, meristematic zone D, mature zone

15. Green food refers to

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A. Green food B. Nutritious food with high economic value

C. Food with chlorophyll D. Safe and pollution-free nutritious food

16. Use a microscope to observe the blood flow in the tail fin of a small fish. The blood vessels through which red blood cells can only pass in a single file are

A, vein B, artery C, capillary D, lymphatic capillary

17. The following Which disease has nothing to do with abnormal hormone secretion

A. Dwarfism B. Creatism C. Color blindness D. Diabetes

18. On which structure does human vision occur?

A. Retina B. Optic nerve C. Brain D. Cerebellum

19. The dermis of the skin is rich in sensory nerve endings.

Can feel hot, cold, and tenderness. The picture below is a

structural model diagram of a neuron. Which structure in the picture represents the nerve

ending

A, ① B, ② C, ③ D , ④

20. Among the following examples, which one is caused by human destruction of the ecological environment

A. Acid rain B. Earthquake

C. Destruction of the ozone layer D. Japan's "Itai-Itai disease"

21. The picture on the right is a schematic diagram of the structure of human joints. Which ____ number in the picture

The structure shown represents articular cartilage< /p>

A, ① B, ② C, ④ D, ⑤

22. Which of the following statements about plant respiration and photosynthesis are correct

A. All life Cells all perform photosynthesis B. Photosynthesis occurs during the day and respiration occurs at night

C. All living cells perform respiration D. Plant respiration absorbs carbon dioxide and releases oxygen

23 , Which of the following does not belong to asexual reproduction

A. Using wicker cuttings B. Grafting

C. Using plant roots for reproduction

(Split roots) D. Use plant seeds for reproduction

24. Which of the following organisms does not live a parasitic life

A. Ascaris B. Schistosoma C. Virus D. Locust

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25. Regarding the description of the general trend of biological evolution, the incorrect one is

A. From aquatic to terrestrial B. From terrestrial to aquatic C. From simple to complex D. From From low to high

26. In the process of controlling SARS, the purpose of isolating SARS patients

A. to control the source of infection B. to cut off the route of transmission C. to protect susceptible groups D. Enhance the patient's immunity

27. A young man with AB blood type is in a car accident and needs blood transfusion immediately. Among the following blood donors, which one should be considered first

A, type A, B, Type B, type C, type O, D, type AB

28. Which of the following physiological phenomena does not appear after puberty?

A. Female breasts increase B. Males have testicles

C. Menstruation occurs in women D. Beards grow in boys The ones with the most content are

A, grass B, rabbit C, fox D, wolf

30. The traits of human tongue rolling and non-rolling are controlled by genes, and R determines whether the tongue can be rolled. , r determines that the tongue cannot be rolled. There is a couple. The father can roll the tongue (RR) and the mother cannot roll the tongue (rr). The genetic composition of the offspring is

A, RR B, Rr C, rr D, RRrr

2. Non-choice questions (full score is 40 points, including 2 points for each blank for questions 31 to 43, and 1 point for each blank for questions 44 to 45)

31. Science Research shows that during human reproduction, the sex of offspring is determined by ________.

32. A group of cells formed by cells with similar morphology and the same structure and function united together is called a tissue. Tissues are the result of cell___________

33. The growth of plants requires a variety of inorganic salts, of which the most required are inorganic salts containing ______, phosphorus and potassium.

34. The riddle "A hemp house, a red tent, and a fat white man sitting in the middle" refers to ____ __. It is a fruit that develops from the structure of a flower.

35. The main organ of human breathing is ____________________. The organ that forms urine in the urinary system is _________

36. Among the two behaviors of "bird feeding fish" and "big tit secretly drinking milk", the one that belongs to learned behavior is _______________.

37. There are bacteria in the gastrointestinal tract of cattle that specifically help to decompose cellulose in forage, and cattle provide a place and food for the bacteria to survive. They depend on each other and live together. The relationship between bacteria and cattle is biologically known as _______________.

38. Modern genetic research shows that biological traits are controlled by _______________.

39. There is a big difference between frog larvae and adults, and this change is completed in a short period of time. This kind of development is called ______________ development.

40. Blood donation is the responsibility and obligation of every healthy citizen over 18 years old to the society and compatriots. A healthy adult donating __________ ml of blood at a time will not affect health.

41. According to the theory of biological evolution, the long neck and long forelimbs of existing giraffes are the result of _______________.

42 In order to protect red-crowned cranes, my country has established nature reserves in Zhalong, Heilongjiang and Jiangsu.

43. According to the "Guangming Daily" report: my country accounts for 330 million of the 1.1 billion smokers in the world. About 1 million people die from smoking-related diseases in our country every year. In conjunction with the promotion of "World No Tobacco Day" on May 31st. Please plan a public service announcement within 20 words for the TV station to encourage people to cherish life and stay away from tobacco.

Advertising words:

44. Most Chinese people cannot drink too much fresh milk. Milk contains lactose, which requires an enzyme called "galactase" to break down lactose for human absorption.

However, Han people lack this enzyme, which is determined by genes. Most people will experience discomfort or even diarrhea if they drink 500 ml of milk a day.

⑴The four trace elements calcium, iron, zinc and selenium contain more in milk.

⑵The main place for digestion and absorption of milk after entering the human body is .

⑶The sweet and sour yogurt we usually drink is made by adding lactic acid bacteria to milk and fermenting it under closed conditions. Lactic acid bacteria belong to (fill in "fungus", "bacteria" or "mold")< /p>

⑷Westerners treat milk like water, no matter how much they drink, it will be fine. Do you think this has to do with genetic diversity? answer: .

⑸ Based on the above materials, combined with your daily study, talk about your understanding of enzymes. Summarize it in one sentence. (Within 20 words)

45. There is a dish in the seafood restaurant called "Xi Shi tongue (a kind of shellfish) stir-fried nine-story pagoda (a kind of spice plant)". The media reported that the nine-story pagoda contains safrole. (A) Xiao Ming speculated that trace amounts of safrole can cause cancer; (b) So, he prepared Two groups of mice, one group was fed food containing trace amounts of safrole for a long time, and the other group was fed normal food; (C) After one year, neither group of mice developed cancer.

⑴Which step in the scientific inquiry method does (A) above belong to? Answer:

⑵ When the experimental results do not conform to the hypothesis, it means that the hypothesis is . (Fill in “correct” or “wrong”)

⑶ The steps are controlled experiments commonly used in inquiry activities

⑷ Rats are mammals, and mammals live in a wide range. Please Write a mammal that can fly, such as:

⑸ Many factors can change the normal genetic material in cells and cause cells to become cancerous. Please write down one of the cancer-preventing factors, such as:

You don’t know how to ask the teacher

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