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
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: B
Question 5:
Topic – 6.1 Photosynthesis
The diagram shows a cross-section of part of a leaf.
Which type of cell carries out the most photosynthesis?
▶️Answer/Explanation
Ans: A
Question 6:
Topic – 2.1 Cell structure
A plant cell is viewed using a microscope with a magnification of 500. The image of the cell has a width of 20 mm.
What is the actual width of the cell?
(A) 0.04 mm
(B) 0.2 mm
(C) 4 mm
(D) 25 mm
▶️Answer/Explanation
Ans: A
Question 7:
Topic – 3.1 Diffusion
Particles can move into and out of cells by diffusion.
Which statement about diffusion is correct?
(A) Particles move from a region of lower concentration to a region of higher concentration.
(B) Particles only move into cells by diffusion.
(C) The net movement of particles is against a concentration gradient.
(D) The process involves the random movement of particles.
▶️Answer/Explanation
Ans: D
Question 8:
Topic – 8.4 Translocation
Potato cylinders were put into different concentrations of sucrose solution for the same amount of time. The masses of the potato cylinders were measured before and after being immersed in the solutions.
The results are recorded in the table.
Which potato cylinder was put into the solution with the highest sucrose concentration?
▶️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 description of an enzyme-catalysed reaction is correct?
(A) The substrate binds to an enzyme with the same shape and a product is formed.
(B) The product binds to an enzyme with the same shape and a substrate is formed.
(C) The product binds to an enzyme with a complementary shape and a substrate is formed.
(D) The substrate binds to an enzyme with a complementary shape and a product is formed.
▶️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
Which row shows what is needed for photosynthesis?
▶️Answer/Explanation
Ans: A
Question 14:
Topic – 7.4 Chemical digestion
Which organ secretes hydrochloric acid?
▶️Answer/Explanation
Ans: C
Question 15:
Topic – 7.3 Physical digestion
Which statements correctly describe the process of dental decay?
1 Food and bacteria coat the teeth.
2 The bacteria use the sugar in the food for respiration.
3 The bacteria produce acids.
4 The sugar dissolves the enamel.
(A) 1 and 2 only
(B) 2 and 3 only
(C) 3 and 4
(D) 1, 2 and 3
▶️Answer/Explanation
Ans: D
Question 16:
Topic – 7.4 Chemical digestion
A piece of bread begins to taste sweet when it is mixed with saliva and chewed for several minutes.
Which substance in saliva causes this change?
(A) amylase
(B) hydrochloric acid
(C) lipase
(D) protease
▶️Answer/Explanation
Ans: A
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 row shows processes that all use energy from respiration?
key
√ = uses energy from respiration
X= does not use energy from respiration
▶️Answer/Explanation
Ans: D
Question 24:
Topic – 12.3 Anaerobic respiration
What is the word equation for anaerobic respiration in yeast?
(A) glucose → alcohol + carbon dioxide
(B) glucose → alcohol
(C) glucose → lactic acid + carbon dioxide
(D) glucose → lactic acid
▶️Answer/Explanation
Ans: A
Question 25:
Topic – 13.1 Excretion in humans
Which substances are excreted from the human body?
1 carbon dioxide
2 urea
3 water
(A) 1 and 2 only
(B) 1 and 3 only
(C) 1, 2 and 3
(D) 2 and 3 only
▶️Answer/Explanation
Ans: C
Question 26:
Topic – 14.1 Coordination and response
What is the order of structures that a nerve impulse travels through during a reflex action?
(A) effector → neurones → receptor
(B) receptor → neurones → effector
(C) neurones → effector → receptor
(D) receptor → effector → neurones
▶️Answer/Explanation
Ans: B
Question 27:
Topic – 14.2 Sense organs
Which structure can reduce how much light enters the eye?
▶️Answer/Explanation
Ans: B
Question 28:
Topic – 14.4 Homeostasis
The diagram shows a section through human skin.
What are the structures labelled X, Y and Z?
▶️Answer/Explanation
Ans: B
Question 29:
Topic – 15.1 Drugs
A disease cannot be treated with antibiotics.
What could be the reasons for this?
1 It is not a bacterial disease.
2 The pathogen is a virus.
3 The patient has become resistant to the antibiotic.
(A) 1 and 2 only
(B) 1 and 3 only
(C) 2 and 3 only
(D) 1, 2 and 3
▶️Answer/Explanation
Ans: A
Question 30:
Topic – 12.3 Anaerobic respiration
Which statement explains the increased risk of having an accident after consuming excessive alcohol?
(A)) Alcohol can be addictive.
(B) Alcohol increases self-control.
(C) Alcohol increases reaction time.
(D) Alcohol decreases reaction time.
▶️Answer/Explanation
Ans: C
Question 31:
Topic – 20.4 Conservation
The table shows the conditions that four samples of seeds were kept in.
Which sample would germinate?
▶️Answer/Explanation
Ans: C
Question 32:
Topic – 16.3 Sexual reproduction in plants
The diagram shows a cross-section of a flower.
During pollination, which labelled structure releases the pollen and which labelled structure receives the pollen?
▶️Answer/Explanation
Ans: C
Question 33:
Topic – 20.4 Conservation
What is a natural method of birth control?
(A) contraceptive pill
(B) diaphragm
(C) monitoring cervical mucus
(D) vasectomy
▶️Answer/Explanation
Ans: C
Question 34:
Topic – 17.3 Meiosis
Which row shows the results of meiosis?
▶️Answer/Explanation
Ans: B
Question 35:
Topic – 17.4 Monohybrid inheritance
In a species of plant, the allele for red flower colour, R, is dominant to the allele for yellow flower colour, r.
What would be the flower colour of the offspring of a cross between a parent with the genotype Rr and a parent with the genotype rr?
(A) 100% red
(B) 75% red and 25% yellow
(C) 50% red and 50% yellow
(D) 25% red and 75% yellow
▶️Answer/Explanation
Ans: C
Question 36:
Topic – 18.3 Selection
What is needed for natural selection to take place?
(A) excess resources for the population
(B) no variation within a population
(C) reproduction by individuals that are better adapted to the environment than others
(D) selection by humans of organisms with desired characteristics
▶️Answer/Explanation
Ans: C
Question 37:
Topic – 19.2 Food chains and food webs
The diagram shows a woodland food web.
Which organisms are secondary consumers?
(A) fox and owl
(B) fox and stoat
(C) mouse and rabbit
(D) owl and stoat
▶️Answer/Explanation
Ans: D
Question 38:
Topic – 19.4 Populations
Which statement describes a population?
(A) all the three-spined stickleback fish living in a lake
(B) all the organisms living in a lake
(C) all the fish living in a lake
(D) all the three-spined stickleback fish that have ever lived in a lake
▶️Answer/Explanation
Ans: A
Question 39:
Topic – 7.4 Chemical digestion
Biological washing powders can remove stains from clothes.
What must a washing powder contain, to remove an oil stain from a t-shirt?
(A) amylase
(B) lipase
(C) pectinase
(D) protease
▶️Answer/Explanation
Ans: B
Question 40:
Topic – 20.3 Pollution
The diagram shows a sewage treatment process.
What is structure X?
(A) aeration tank
(B) anaerobic tank
(C) settlement tank
(D) storage tank
▶️Answer/Explanation
Ans: A