AQA Combined Science Trilogy Biology Paper 1 E-Mock

Question 1

1 Point

Which sub-cellular structures can be found in animals?

Cell wall
Cell membrane
Chloroplasts
Ribosomes
Vacuole
Nucleus
Plasmids
Mitochondria
Cytoplasm

Question 2

1 Point

The male gametes (sperm cells) are adapted to their function. Which of the following are adaptations of sperm cells?

They have lots of mitochondia
They have a flagellum
They have an acrosome
They are haploid
They are diploid
They have lots of chloroplasts
They have lots of ribosomes

Question 3

1 Point

Place the measurement units in order from biggest to smallest

Picometres (pm)
Kilometres (km)
Millimetres (mm)
Micrometres (μm)
Metres (m)
Nanometres (nm)

View Answers:

Question 4

1 Point

Put the stages of mitosis in the correct order from start to finish

Prophase
Anaphase
Interphase
Metaphase
Cytokenesis
Telophase

View Answers:

Question 5

1 Point

Which of the following are reasons why mitosis takes place?

For growth of new cells
For repair of old cells
For asexual reproduction
For sexual reproduction
For the development of new chloroplasts in a cell

Question 6

2 Points

Amidst, with, against

Complete the sentence: In diffusion and osmosis, particles move the concentration gradient, whilst in active transport, particles move the concentration gradient.

Question 7

1 Point

Which of the following are factors that affect the rate of diffusion?

Concentration gradient
Temperature
Viscosity of solvent
Distance for particles to travel
Surface area

Question 8

1 Point

Why does the rate of an enzyme-controlled reaction increase with greater substrate concentration?

The rate of reaction increases because there are available active sites, so more reactions take place
The rate of reaction increases because higher substrate concentration leads to warmer temperatures
The rate of reaction does not increase

Question 9

1 Point

Why is the rate of an enzyme-controlled reaction highest at an optimum pH?

Above and below the optimum the shape of the active site is changed
It is not different and there is no optimum
At high and low pH the substrates and enzymes repel each other

Question 10

1 Point

Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?

Cardiac output = stroke volume x heart rate
Cardiac output = stroke volume / heart rate
Cardiac output = blood viscosity x heart rate / stroke volume
Cardiac output = height x heart rate / stroke volume

Question 11

1 Point

The left ventricle has a thicker muscle wall, why is this the case?

Blood from the left ventricle is pumped around the body, so needs to contract more strongly than the right ventricle
Blood from the left ventricle is much more viscous because it has more oxygen in it
Blood from the left ventricle is a different colour
The imbalance happens only to some people when we are embryos and persists into adulthood

Question 12

1 Point

What are the lower chambers of the heart called?

Question 13

1 Point

What is the role of coronary arteries?

Providing oxygen to the heart muscles
Providing carbon dioxide to the heart muscles
Pumping blood to the feet
Transporting blood to the lungs from the heart

Question 14

4 Points

Drag and drop to match the function to the correct part of blood

Plasma
White blood cells
Red blood cells
Platelets

Carrying dissolved substances around the body
Protecting the body from foreign cells
Carrying oxygen around the body via haemoglobin
Healing wounds by clotting the blood

Question 15

1 Point

Which type of white blood cell engulfs (surrounds) foreign cells in order to digest them?

Phagocytes
Parcocytes
Lymphocytes
Pregocytes

Question 16

2 Points

Which of the following features are found in veins?

Thin flexible walls
Thick elastic walls made from muscle fibres
Wide lumen (inside diameter of tube)
Narrow lumen (inside diameter of tube)
One cell thick walls

Question 17

1 Point

Undernutrition, extranutrition, overnutrition, malnutrition

Complete the sentence: happens when you consume too little or too much of a particular nutrient.

Question 18

1 Point

If coronary arteries are blocked, new blood vessels can be inserted, what is this procedure called?

A bypass
A mispass
A longpass
An underpass

Question 19

1 Point

What is the best way to reduce the risk of cardiovascular disease?

Change lifestyle – do more exercise and eat more healthily
Take lifelong medicines
Have heart surgery

Question 20

2 Points

Companion, guard, root hair, translocation, transpiration

Complete the statement: During sucrose is transported in the sieve tubes of phloem vessels. cells pump sucrose across sieve cells up shoots or down to storage organs.

Question 21

3 Points

Phloem, xylem, guard cells, stream, stomata, root hair cells, hoses

Complete the statement: Water is pulled up the vessels as water evaporates from the vessels in the leaves. As the water vapour diffuses through the more water evaporates from the vessels. This creates a continuous chain of water called the transpiration .

Question 22

3 Points

Complete the sentence: The World Health Organisation (WHO) defines health as a state of complete , and well being.

Question 23

1 Point

If left untreated, HIV will develop into which disease?

AIDS
SIDS
Cardiovascular disease
Cancer

Question 24

1 Point

Complete the sentence. A is a disease-causing organism.

Question 25

1 Point

How do antibiotics work?

By inhibiting the bacterial cell's processes (e.g. blocking protein production)
By causing pathogens to be expelled by the body inside the urine
By creating a physical barrier in the oesophagus, preventing the spread of bacteria
By causing the bacteria to implode

Question 26

1 Point

If a person has a disease they may be more susceptible to another disease. Which of the following reasons could explain why this is true?

A pathogen often causes multiple diseases and so when you are infected you can easily get another disease from the same pathogen
Diseases can damage the immune system, so it is not able to protect the body as effectively
Diseases can damage the physical and chemical barriers that prevent pathogens from entering the body
Diseases can prevent organ systems from working properly, leading to other diseases being more likely

Question 27

1 Point

Place the following statements in the correct order:

Other lymphocytes stay in the blood and as memory lymphocytes ready to attack the pathogen if it enters the body again)
The lymphocytes with antibodies that match the shape of the antigens on the pathogens are activated
Some lymphocytes eject antibodies which stick to the antigens of pathogens and destroy them
Activated Lymphocytes divide to make clones
A pathogen enters the body and bypasses the physical and chemical defences

View Answers:

Question 28

1 Point

Which of the following are physical barriers stopping pathogens from entering the body?

Mucus
Skin
Cilia
Lysozymes
Hydrochloric acid

Question 29

2 Points

What is the balanced chemical equation for photosynthesis?

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
CO₂ + H₂O → 2C₆H₁₂O₆ + 6O₂
C₆H₁₂O₆ → 2O₂ + CO₂
6CO + 6H₂ → C₆H₁₂O₆

Question 30

1 Point

In which sub-cellular structure inside plant cells does photosynthesis occur?

Chloroplasts
Mitochondria
Cytoplasm
Ribosomes

Question 31

4 Points

Which of the following are the 4 factors that affect the rate of photosynthesis?

Amount of chloroplasts in cells
Concentration of atmospheric nitrogen
Availability of nitrogen in the soil
Air temperature
Concentration of atmospheric carbon dioxide
Light intensity
Concentration of dissolved oxygen in the soil

Question 32

3 Points

Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?

Transparent epidermis – allows sunlight to travel straight into the leaves
Palisade layer filled with chloroplasts is just below the epidermis – maximising light intensity
Guard cells open and close stomata – control water loss
Guard cells open and close the entrance to leaves from stems – isolates infected leaves
Chloroplasts migrate back into the stems overnight – protects them from cold weather

Question 33

1 Point

Which of the following is the correct word equation for aerobic respiration?

oxygen + glucose = carbon dioxide + water + energy
carbon dioxide + oxygen = water + energy + glucose
nitrogen dioxide + carbon dioxide = water + energy
hydrogen dioxide + glucose = carbon dioxide + water + methane

Question 34

1 Point

Which system is responsible for ensuring the supply of oxygen and glucose to cells?

Circulatory System
Nervous System
Immune System
Skeletal System

Question 35

1 Point

What is the purpose of respiration?

Provide energy to the cells
To make glucose
To break down chlorophyll

Question 36

1 Point

What is an advantage of anaerobic respiration?

It is able to produce more energy, for a longer period than aerobic respiration
It is very efficient at generating energy
It can provide energy very quickly without the need for oxygen

Question 37

3 Points

Drag and drop to match the role and structure

Cytoplasm
Chloroplasts
Mitochondria

Supports and suspends structures within cells and where chemical reactions take place
Where photosynthesis takes place
Where aerobic respiration takes place

Question 38

3 Points

Drag and drop to match the role and structure

Ribosomes
Cell wall
Vacuole

Sites of protein synthesis (where proteins are made)
Supports the cell providing strength and flexibility for growth
Stores nutrients and salts

Question 39

1 Point

Xylem, phloem, guard cells, root hairs

Complete the sentence: living cells in use energy to transport sucrose around the plant.

Question 40

1 Point

What is the role of physical barriers and chemical defences?

Preventing pathogens from entering the body and killing them if they do
Fighting pathogens from within the body after they have entered and spread
Passing information around the body in order to coordinate attacks on pathogens

Question 41

2 Points

Which of the following are chemical defences against pathogens?

Skin
Mucus
Cilia
Lysozymes
Hydrochloric acid

Question 42

2 Points

Antigens, antibiotics, antibodies, lymphocytes, phagocytes

Complete the sentence:

White blood cells called have molecules on their surfaces called .

Question 43

1 Point

Which of the following types of pathogens can antibiotics be used on?

Fungi
Viruses
Protists
Bacteria

Question 44

5 Points

Look at the graph below:

Fill in the table below based on the graph.

Condition Rate of Transpiration (ml/hour)

High Temperature 8

Low Temperature

4

Low Humidity

9

Low Light Intensity 3

High Wind Speed

Low Wind Speed 4

Condition	Rate of Transpiration (ml/hour)
High Temperature	8
Low Temperature
	4
Low Humidity
	9
Low Light Intensity	3
High Wind Speed
Low Wind Speed	4

Average Score
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GCSE AQA Combined Science Trilogy Paper 1

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