TBAT Biology

01. Living animals release carbon dioxide.

This is an example of which life process ?

A) nutrition

B) sensitivity

C) movement

D) excretion

02. Some statements about species are given.

Members of a species all look identical.
Members of a species belong to the same genus./li>
Members of a species can produce fertile offspring.
Species are named using an international system.

A) 1, 2, 3 and 4

B) 1, 2 and 3 only

C) 2 and 4 only

D) 2, 3 and 4 only

03. The table shows some features of different animals.

Which animal is a reptile ?

A) Answer D

B) Answer C

C) Answer B

D) Answer A

04. Which structures are found in the cells of all living organisms?

cell membrane
chloroplast
cytoplasm

A) 1 and 2 only

B) 1 and 3 only

C) 2 and 3 only

D) 1, 2 and 3

05. A diagram of a human red blood cell is shown. The length of line XY on the diagra is 40 mm. The actual width of the cell is 0.008 mm.

What is the magnification of the diagram ?

A) +500

B) +50000

C) +500000

D) +5000

06. Which statements are correct for both diffusion and osmosis ?

A) Answer A

B) Answer B

C) Answer D

D) Answer C

07. What is a role of water in digestion?

A) It is a solvent.

B) It is an enzyme.

C) It is soluble.

D) It is a mineral.

08. The concentration of sodium ions in the soil is lower than concentration inside root hair cells. Which process will be used when sodium ions are taken into root hair cells from the soil?

A) osmosis

B) active transport

C) transpiration

D) diffusion

09. The diagram represents a protein molecule.

What do the small circles represent ?

A) fatty acids

B) simple sugars

C) amino acids

D) glycerol

10. Which process depend on the action of enzymes?

digestion
osmosis
respiration

A) 1 and 3

B) 1 and 2

C) 1 only

D) 2 and 3

11. Which diagram of an enzyme, active site and substrate is correct ?

A) Answer B

B) Answer A

C) Answer D

D) Answer C

12. Four test-tubes are set up as shown.

Which test-tube contains the least carbon dioxide after one hour?

A) Answer A

B) Answer C

C) Answer D

D) Answer B

13. Which row shows the uses of some carbohydrates in plants ?

A) Answer C

B) Answer D

C) Answer A

D) Answer B

14. The lack of which component of a balanced diet will lead to the development of scurvy ?

A) vitamin C

B) calcium

C) vitamin D

D) iron

15. Which structure is the duodenum?

A) Answer B

B) Answer C

C) Answer D

D) Answer A

16. The food label is from a packet of cereal.

The label can help someone who is concerned about their diet.

A person eats 45g of cereal.

One of the food types listed in the label can help prevent constipation.

How many grams of this food type does the person eat ?

A) 1.3g

B) 2.8g

C) 7.7g

D) 3.5g

17. Which pathway is taken by water through a plant?

A) stomata -> root hair -> root cortex -> xylem -> mesophyll

B) root hair -> root cortex -> xylem -> mesophyll -> stomata

C) stomata -> root cortex -> xylem -> mesophyll -> root hair

D) root hair -> xylem -> mesophyll -> root cortex -> stomata

18. Which row shows the transpiration rate for the conditions described ?

tbat biology q18

A) Answer B

B) Answer C

C) Answer D

D) Answer A

19. The diagram shows the human heart.

Which label shows the left ventricle?

tbat biology q19

A) Answer A

B) Answer D

C) Answer B

D) Answer C

20. Which row shows the features of an artery or a vein ?

tbat bioloqy q20

A) Answer C

B) Answer B

C) Answer A

D) Answer D

21. What are features of gas exchange surfaces in animals ?

A) thick-walled and small surface area

B) thick-walled and large surface area

C) thin-walled and small surface area

D) thin-walled and large surface area

22. Which chemical can be used to show the presence of carbon dioxide gas ?

A) Benedict’s solution

B) ethanol

C) limewater

D) biuret solution

23. The diagram represents the exchange of gases during breathing and during respiration in the body.

What is represented by X ?

A) lungs

B) kidneys

C) liver

D) heart

24. Which molecule is produced by anaerobic respiration in yeast?

A) carbon dioxide

B) oxygen

C) water

D) lactic acid

25. The diagram shows the human body and some of its organs.

Which structure removes urea from the blood ?

tbat bioloqy q25

A) Answer D

B) Answer B

C) Answer C

D) Answer A

26. The diagram shows the structures in a reflex arc.

What is X ?

A) sensory neurone

B) synapse

C) relay neurone

D) effector

27. Changes in light intensity cause changes in the diameter of the pupil in the eye.

Which rows show the pupil reflex ?

tbat bioloqy q27

A) 1 and 4

B) 2 and 3

C) 2 and 4

D) 1 and 3

28. A hormone is injected into a person to reduce their blood glucose concentration.

Which endocrine gland is not functioning properly in a person who needs to have this injection ?

A) adrenal gland

B) testis

C) pancreas

D) ovary

29. The table shows which antibiotics are effective against different types of bacteria.

The shaded areas show the antibiotic is effective against that type of bacteria.

A person has a disease caused by a type of Streptococcus and a second infection caused by a type of Pseudomonas bacteria.

Which antibiotic should be taken ?

A) 5 or 6

B) 2 or 4

C) 1 or 6

D) 3 or 4

30. The diagram shows one way that a plant can reproduce.

What is a feature of this type of reproduction ?

tbat biology q30

A) Offspring are easily dispersed over a wide area.

B) The offspring show genetic variation.

C) Only one parent is required.

D) Pollination by insects is required.

31. Which human characteristics are inherited ?

tbat bioloqy q31

A) Answer A

B) Answer B

C) Answer D

D) Answer C

32. In a sperm cell, which structure contains enzymes that can digest the jelly coat of an egg cell ?

A) flagellum

B) acrosome

C) nucleus

D) mitochondria

33. When breeding, which pair of parents will be pure-breeding for a particular characteristic ?

A) two individuals with the same phenotype

B) two heterozygous individuals

C) two homozygous individuals

D) a heterozygous and a homozygous individual

34. Ina pea plant, the allele for round seeds, R, is dominant to the allele for wrinkled seeds, r. If plants with the genotype Rr are crossed, what are the likely proportions of offspring ?

A) all with round seeds

B) all with wrinkled seeds

C) 1 with round seeds : 1 with wrinkled seeds

D) 3 with round seeds : 1 with wrinkled seeds

35. Which definition of continuous variation is correct ?

A) variation that results in a range of phenotypes between two extremes

B) variation that results in a limited number of phenotypes with no intermediates

C) variation that results in a limited number of phenotypes between two extremes

D) variation that results in a range of phenotypes with no intermediates

36. Which term is used to describe an organism that makes its own organic nutrients ?

A) producer

B) carnivore

C) decomposer

D) hebivore

37. What is the principal source of energy for most food chains ?

A) sunlight

B) oxygen

C) carbon dioxide gas

D) glucose

38. A single tree is food for a large population of caterpillars. Several small birds eat the caterpillars. The small birds are eaten by a bird of prey.

A) Answer C

B) Answer A

C) Answer D

D) Answer B

39. The diagram shows the results of a survey on the types of animals found along a stretch of river near to a factory.

Which animal lives in the least polluted water ?

tbat biology q39

A) caddisfly larva

B) leech

C) bloodworm

D) stonefly nymph

40. Bacteria are useful for manufacturing products for human use.

Which statement explains why they are useful ?

A) Bacteria infect human cells

B) Bacteria can be grown without nutrients.

C) Bacteria do not have a nucleus.

D) Bacteria reproduce very rapidly.

41. All living organisms release energy from nutrient molecules within their cells.

What is the name of this characteristic ?

A) respiration

B) growth

C) sensitivity

D) nutrition

42. The scientific names of some animals are listed.

Which animals are in the same genus ?

Arius felis
Felis concolor
Felis rufus
Macropus rufus

A) 3 and 4 only

B) 1, 2 and 3

C) 2 and 3 only

D) 2, 3 and 4

43. The diagram shows a dichotomous key for arthropods.

Which group does the isopod belong to ?

tbat bioloqy q43

A) myriapods

B) arachnids

C) crustaceans

D) insects

44. The diagram shows a cross-section through two guard cells of a leaf.

Which labelled structures would also be found in an animal cell ?

tbat biology q44

A) Z and W

B) Y and Z

C) W and X

D) X and Y

45. Which level of organisation is shown by the heart of a mammal ?

A) a tissue

B) a cell

C) an organ

D) an organ system

46. The image shows a single-celled organism called a Paramecium.

The length of the Paramecium in the image is 6 cm. The magnification is x400.

Which calculation will give the correct actual length of the Paramecium, in mm ?

tbat bioloqy q46

A) Answer D

B) Answer A

C) Answer C

D) Answer B

47. Female moths release chemicals into the air. Male moths detect these chemicals and fly towards the females.

How do the chemicals spread through the air ?

A) diffusion

B) active transport

C) osmosis

D) transpiration

48. The diagram shows a section through a mesophyll cell of a leaf.

Which part is partially permeable ?

tbat biology q48

A) Answer B

B) Answer C

C) Answer A

D) Answer D

49. What are the smaller basic units of starch and glycogen molecules ?

tbat bioloqy q49

A) Answer D

B) Answer C

C) Answer B

D) Answer A

50. What is the correct definition of an enzyme ?

A) a protein that functions as a biological catalyst

B) a substance that is changed by the reaction

C) a carbohydrate that functions as a biological catatlyst

D) a substance made of fats that changes the rate of a reaction

51. The diagram shows two food tests being carried out on solution X.

Which nutrients are present in solution X ?

A) starch and fat

B) starch and sugar

C) protein and starch

D) protein and sugar

52. Which chemical is a product of photosynthesis that moves out of a green leaf through its stomata?

A) carbon dioxide

B) water

C) oxygen

D) glucose

53. A student investigated one of the factors that affects photosynthesis.

Part of a leaf was covered with black paper, as shown.

After two days the student tested the leaf for the presence of starch.

Which factor did the student investigate ?

A) oxygen

B) carbon dioxide

C) chlorophyll

D) light

54. Which nutrient is required to prevent scurvy ?

A) iron

B) calcium

C) vitamin C

D) vitamin D

55. Which diagram represents the action of lipase ?