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Question 1:

Topic – 17.2 Mitosis

Which process provides an organism with the raw materials needed for tissue repair?
(A) excretion
(B) growth
(C) nutrition
(D) respiration

▶️Answer/Explanation

Ans : C

Question 2:

Topic – 1.2 Concept and uses of classification systems

Which name is given to a group of individuals that can reproduce to produce fertile offspring?
(A) a genus
(B) a kingdom
(C) a species
(D) an organ system

▶️Answer/Explanation

Ans : C

Question 3:

Topic – 1.3 Features of organisms

An animal has four legs, hair and a tail.
To which group of vertebrates does it belong?
(A) amphibians
(B) birds
(C) mammals
(D) reptiles

▶️Answer/Explanation

Ans : C

Question 4:

Topic – 1.3 Features of organisms

Root hair cells are found on plant roots.
Which feature is present in a root hair cell but not in a sperm cell?
(A) cell membrane
(B) cell wall
(C) chloroplasts
(D) cytoplasm

▶️Answer/Explanation

Ans : B

Question 5:

Topic – 2.1 Cell structure

The cells listed have specialised structures that allow them to carry out their functions.

1 ciliated cell
2 nerve cell
3 root cortex cell
4 sperm cell
Which cells have structures that can move?
(A)  1 and 2

(B)  1 and 4

(C)  2 and 3

(D)  3 and 4

▶️Answer/Explanation

Ans : B

Question 6:

Topic – 2.1 Cell structure

A cell was viewed under a microscope. The actual length of the cell is 0.025 mm. The magnification of the image is ×400.
What is the length of the cell in the image?
(A)  10 mm

(B)  100 mm

(C)  1600 mm

(D)  16 000 mm

▶️Answer/Explanation

Ans : A

Question 7:

Topic – 8.1 Xylem and phloem

The roots of a plant were placed in a solution of red dye. After 24 hours, a section of root and a section of leaf were cut from the plant.

In which tissues will the red dye be visible?
(A)  P and R

(B)  P and S

(C)  Q and R

(D) Q and S

▶️Answer/Explanation

Ans : C

Question 8:

Topic – 3.2 Osmosis

Which row shows features of osmosis in cells?

▶️Answer/Explanation

Ans : B

Question 9:

Topic – 4.1 Biological molecules

Which chemical is used to test for the presence of protein in a food sample?
(A)  Benedict’s solution
(B)  biuret solution
(C)  DCPIP
(D)  iodine solution

▶️Answer/Explanation

Ans : B

Question 10:

Topic – 5.1 Enzymes

Which statement about enzymes is correct?
(A)  They are made of carbohydrates.
(B)  Their activity is unaffected by pH.
(C)  They are used up during the reaction.
(D)  They have a complementary shape to their substrate.

▶️Answer/Explanation

Ans : D

Question 11:

Topic – 5.1 Enzymes

The graph shows the effect of temperature on the activity of an enzyme.

At which temperature is the enzyme most active?
(A)  15 ºC

(B)  25 ºC

(C)  35 ºC

(D)  60 ºC

▶️Answer/Explanation

Ans : C

Question 12:

Topic – 6.2 Leaf structure

The substances listed are found in the leaf of a plant.
Which substance is obtained from the soil?
(A)  carbon dioxide
(B)  chlorophyll
(C)  glucose
(D) mineral ions

▶️Answer/Explanation

Ans : D

Question 13:

Topic – 6.1 Photosynthesis

The diagram shows an experiment to find out if carbon dioxide is necessary for photosynthesis.
The plant is kept in the dark for 48 hours to remove any starch. Then it is set up in the light, as shown.

After 10 hours, leaves X and Y were tested for starch.
What is the expected result?

▶️Answer/Explanation

Ans : C

Question 14:

Topic – 7.3 Physical digestion

The diagram shows a cross-section of a human tooth.

Which row identifies the labels in the diagram?

▶️Answer/Explanation

Ans : D

Question 15:

Topic – 7.2 Digestive system

Which statement is correct?
(A)  Amylase breaks down glucose to starch.
(B)  Amylase is secreted into the mouth and small intestine.
(C)  Lipase breaks down glycerol to fatty acids.
(D)  Protease is secreted into the oesophagus and stomach.

▶️Answer/Explanation

Ans : B

Question 16:

Topic – 7.4 Chemical digestion

Where is most water absorbed in the alimentary canal?
(A)  large intestine
(B)  oesophagus
(C)  small intestine
(D)  stomach

▶️Answer/Explanation

Ans : C

Question 17:

Topic – 16.3 Sexual reproduction in plants continued

The diagram shows a bean seedling soon after it has germinated.
Where is most water absorbed?

▶️Answer/Explanation

Ans : C

Question 18:

Topic – 8.3 Transpiration

Which process occurs during transpiration?
(A)  evaporation of water from the xylem
(B)  loss of water by osmosis from the guard cells
(C)  movement of water vapour through the spongy mesophyll by active transport
(D)  movement of water vapour through the stomata by diffusion

▶️Answer/Explanation

Ans : D

Question 19:

Topic – 9.2 Heart

The diagram shows the outside of a human heart.
Which structure is a coronary artery?

▶️Answer/Explanation

Ans : D

Question 20:

Topic – 9.2 Heart

The diagram shows a section of a human vein.

What is the function of the part labelled X?
(A)  to make sure the blood flows to the heart
(B)  to make sure the blood flows to the kidneys
(C)  to make sure the blood flows to the brain
(D)  to make sure the blood flows to the lungs

▶️Answer/Explanation

Ans : A

Question 21:

Topic – 10.1 Diseases and immunity

Campylobacter is a bacterium that can cause food poisoning.
Which word describes Campylobacter?
(A)  antibody
(B)  disease
(C)  pathogen
(D) symptom

▶️Answer/Explanation

Ans : C

Question 22:

Topic – 11.1 Gas exchange in humans

What is the approximate percentage of oxygen in expired air?
(A)  0.04%

(B)  4%

(C)  16%

(D)  21%

▶️Answer/Explanation

Ans : C

Question 23:

Topic – 12.1 Respiration

Which process could continue without energy from respiration?
(A)  active transport
(B)  growth
(C)  osmosis
(D)  protein synthesis

▶️Answer/Explanation

Ans : C

Question 24:

Topic – 12.3 Anaerobic respiration

Which row shows the products of anaerobic respiration in humans and yeast?

▶️Answer/Explanation

Ans : B

Question 25:

Topic – 13.1 Excretion in humans

A person eats foods containing proteins. Some of the amino acids in the proteins are converted to urea and excreted from the body.

Which row identifies the sites of processes 1, 2 and 3?

▶️Answer/Explanation

Ans : A

Question 26:

Topic – 14.2 Sense organs

Which part of the eye refracts light?
(A)  cornea
(B)  iris
(C)  pupil
(D)  retina

▶️Answer/Explanation

Ans : A

Question 27:

Topic – 14.3 Hormones

Which hormone causes an increase in breathing rate, an increase in heart rate and the widening of pupils?
(A)  insulin
(B)  adrenaline
(C)  oestrogen
(D)  testosterone

▶️Answer/Explanation

Ans : B

Question 28:

Topic – 14.5 Tropic responses

Which row about tropic responses is correct?

▶️Answer/Explanation

Ans : D

Question 29:

Topic – 15.1 Drugs

What is the definition of a drug?
(A)  a substance produced by a gland that is carried in the blood and alters the activity of target organs
(B)  a substance produced by white blood cells that is carried in the blood and destroys bacteria and viruses
(C)  a substance taken into the body that modifies or affects chemical reactions carried out in the body
(D)  a substance that increases the rate of chemical reactions in the body and is not changed by the reaction

▶️Answer/Explanation

Ans : C

Question 30:

Topic – 16.2 Sexual reproduction

What occurs during fertilisation?
(A)  fusion of two gamete nuclei
(B)  fusion of two zygote nuclei
(C)  splitting of a gamete nucleus
(D)  splitting of a zygote nucleus

▶️Answer/Explanation

Ans : A

Question 31:

Topic – 16.5 Sex hormones in humans

Which hormone causes the development of secondary sexual characteristics in human males?
(A)  adrenaline
(B)  insulin
(C)  progesterone
(D)  testosterone

▶️Answer/Explanation

Ans : D

Question 32:

Topic – 14.3 Hormones

The diagrams show four methods of birth control.

What are barrier methods of birth control?

▶️Answer/Explanation

Ans : C

Question 33:

Topic – 17.4 Monohybrid inheritance

In one species of plant, the allele for red-coloured fruit is dominant and is represented by the letter R.

The allele for white-coloured fruit is recessive and is represented by the letter r.
Two plants that are heterozygous for fruit colour are crossed.
What are the possible genotypes of the offspring plants from this cross?
(A)  RR, Rr and rr
(B)  all Rr
(C)  all rr
(D)  Rr and rr only

▶️Answer/Explanation

Ans : A

Question 34:

Topic – 18.1 Variation

Which phenotype shows discontinuous variation in humans?
(A)  foot length
(B)  height
(C)  sex
(D) weight

▶️Answer/Explanation

Ans : C

Question 35:

Topic – 18.1 Variation

What can increase the genetic variation in a species?
(A)  growth
(B)  malnutrition
(C)  mitosis
(D) mutation

▶️Answer/Explanation

Ans : D

Question 36:

Topic – 19.3 Nutrient cycles

The diagram shows part of the carbon cycle.

Which processes reduce or increase carbon dioxide concentration in the atmosphere?

▶️Answer/Explanation

Ans : B

Question 37:

Topic – 19.2 Food chains and food webs

The diagram shows a food chain.

rose bush → aphids → ladybirds → spiders

A disease reduced the number of ladybirds.
What would be the likely effect of this on the numbers of aphids and spiders?

▶️Answer/Explanation

Ans : C

Question 38:

Topic – 19.2 Food chains and food webs

The block at the base of each pyramid represents the number of producers.
Which pyramid of numbers has more tertiary consumers than secondary consumers?

▶️Answer/Explanation

Ans : C

Question 39:

Topic – 21.3 Genetic modification

Corn that has been genetically engineered to be resistant to pests was developed in the 1990s.
The graph shows the change in the percentage of corn grown that was genetically engineered
and the change in the mass of chemical insecticides used.

Which statement describes the data shown in the graph between 1996 and 2013?
(A) The percentage of corn grown that was genetically engineered increased and the use of insecticides decreased.
(B) The percentage of corn grown that was genetically engineered increased and the use of insecticides increased.
(C) The percentage of corn grown that was genetically engineered decreased and the use of insecticides decreased.
(D) The percentage of corn grown that was genetically engineered decreased and the use of insecticides increased.

▶️Answer/Explanation

Ans : A

Question 40:

Topic – 20.2 Habitat destruction

What could be undesirable effects of deforestation?

1 extinction of species
2 increased flooding
3 reduction of atmospheric carbon dioxide
(A)  1 and 2 only

(B) 1 and 3 only

(C) 1, 2 and 3

(D) 2 and 3 only

▶️Answer/Explanation

Ans : A

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