AQA Combined Science Trilogy Biology Paper 2 E-Mock

Question 1

4 Points

Testosterone, oestrogen, FSH, IVF, menstruation, progesterone, ovulation, uterus

The hormones and control the menstrual cycle. Rising levels of these hormones cause the lining to thicken, falling levels cause it to become thinner and trigger .

Question 2

1 Point

What term do we use to describe the release of an egg from the ovary?

Fertilisation
Ovulation
Reproduction
Immunisation

Question 3

1 Point

Which of the following is the role of follicle stimulating hormone (FSH)?

Causes an egg to mature in the ovary
Causes an egg to be released from the ovary
Causes an increase in the thickness of the uterus lining
Causes growth of pubic hair and other secondary sexual characteristics

Question 4

1 Point

Which of the following is the role of luteinising hormone (LH)?

Causes an egg to mature in the ovary
Causes an egg to be released from the ovary
Causes an increase in the thickness of the uterus lining
Causes growth of pubic hair and other secondary sexual characteristics

Question 5

1 Point

Which process is responsible for the production of gametes?

Meiosis
Mitosis
Cytokinesis
Osmosis

Question 6

1 Point

Choose the correct set of sex chromosomes to fill in this genetic diagram (genetic cross).

XX, XY XX, XY
XX, XX XX, XY
XX, XY XX, XX
XX, XX XY, XX

Question 7

1 Point

During meiosis, how many daughter cells are produced?

daughter cells

Question 8

1 Point

Evidence for Darwin’s Theory of Evolution was found when resistance to what emerged in some species of bacteria?

Antibiotics
Antiretroviral drugs
Colder temperatures
Warmer temperatures

Question 9

1 Point

Which of the following is an adaptation that could help an individual to survive and produce more offspring if there was a large increase in air temperatures?

Larger teeth
A large surface area to volume ratio
Sharper claws
Infrared vision

Question 10

1 Point

Predation, competition, evolution

Complete the sentence: When an environmental condition changes, can be increased for certain resources e.g. suitable habitat

Question 11

1 Point

Drag and drop to match the role and structure

Physical characteristics of an organism
The alleles an organism has

Phenotype
Genotype

Question 12

1 Point

What is an allele?

A particular version of a gene
A particular collection of genes
A fertilised egg cell
A tightly packaged coil of DNA

Question 13

1 Point

What term do we use to describe a cell with only one set of chromosomes, rather than two?

Haploid
Diploid
Toploid
Aploid

Question 14

1 Point

Drag and drop to match the base pairs which form DNA

T
G

A
C

Question 15

1 Point

DNA is a genetic code which gives instructions to which sub-cellular structure in order to make specific proteins?

Ribosomes
Nuclei
Mitochondria
Cytoplasm

Question 16

4 Points

A is a small section of DNA on a chromosome. Each codes for a particular sequence of , to make a specific .

Question 17

1 Point

Which square instrument do we use for randomly sampling population sizes?

A quadrat
A line transect
A tape measure

Question 18

1 Point

In a scientific investigation, you and two others randomly sample a rocky shore using quadrats. You find that on average there are 2 crabs per quadrat and the whole shore would be covered by 150 quadrats. Estimate how many crabs are on the whole shore.

300
150
175
450

Question 19

1 Point

Which term do we use to describe the relationships between species that depend on each other for resources?

Interdependent
Intradependent
Extradependent
Codependent

Question 20

3 Points

Drag and drop to match the description to the correct term

Herbivore
Carnivore
Omnivore

An organism that only eats plants
An organism that only eats meat
An organism that eats both plants and meat

Question 21

1 Point

Conservation of habitats is also important to protect endangered species. Which of the following are potential reasons for maintaining high levels of biodiversity?

Diverse ecosystems contain lots of animal and plant species that could be used for medicines in the future
As climate change takes place, diverse ecosystems are needed to cope with the changes in environmental conditions
We need rare species for game hunting so we need to preserve them

Question 22

1 Point

Which of the following are benefits to protecting the rainforests of the world?

Rainforests are not useful to humans in any way, except for wood
Rainforests contain very high biodiversity and can provide new medicines and other products for humans
Rainforests provide a carbon sink, removing carbon dioxide from the atmosphere
Rainforests provide a place for ants to hide from seagulls

Question 23

1 Point

What are abiotic factors?

Physical and chemical environmental factors which affect the distribution and abundance of organisms
Biological environmental factors which affect the distribution and abundance of organisms
Factors which affect the ability of scientists to sample the environment – leading to errors in measurements
Factors which are only related to chemical reactions that occur in plants

Question 24

1 Point

Drag and drop to match the factor to the correct type

Disease
Water availability

Biotic
Abiotic

Question 25

1 Point

Which of the following are strategies organisms use to adapt to changing abiotic conditions?

Changing diet
Moving to new areas
Eating less food

Question 26

1 Point

How does glucagon control the level of blood glucose concentration?

Glucagon is released by the pancreas which stimulates cells in the liver to take in glucose, lowering blood glucose concentration
Glucagon is released by the pancreas which stimulates cells in the liver to convert glycogen to glucose and release it, raising blood glucose concentration
Glucagon is a hormone related to reproduction and has no effect on blood glucose concentration

Question 27

1 Point

Blood glucose levels are controlled with insulin and glucagon to maintain suitable levels of blood glucose concentration. What type of feedback mechanism is this?

feedback, since a change in blood glucose after the release of each hormone, brings the blood glucose concentration back to an average level. e.g. if it gets too high, it is lowered by the correct hormone.

Question 28

1 Point

Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?

Through the normal pathways, but more quickly
Via reflex arcs
Via the CNS
Via the FCS

Question 29

1 Point

Where are relay neurones found?

In the spinal cord
Inside glands
In the lower body
In the liver

Question 30

1 Point

What travels along neurones to pass information through the nervous system?

Photons
Chemicals
Electrical signals
Protons

Question 31

1 Point

Sensory neurones have a fatty layer of insulation, what is it called?

Chitinous brief
Myelin sheath
Enamel layer
Elastic wrapper

Question 32

3 Points

Drag and drop to match the role to each part of the nervous system.

Effectors
Receptors
Central Nervous System

Convert impulses into actions
Detect stimuli/create impulses
Interpret impulses

Question 33

1 Point

What effects does adrenaline have on the heart?

Increased heart rate
Beats more strongly
Slows heart rate
Beats less strongly
Causes the heart to grow more quickly

Question 34

1 Point

When is adrenaline released?

When you are scared or excited
When you are relaxed
When you are sleeping
After a meal

Question 35

1 Point

Where are hormones produced?

Hormonal structures
Endocrine glands
Macro-nitrial vessels
Cyclic sponge layers

Question 36

1 Point

Which of the following organisms belong to the kingdom – animals?

Emperor penguins
Bottlenose dolphins
Giant sea kelp
Lions
Coral polyps

Question 37

1 Point

Which modern development led to the suggestion of the Three-Domain System?

Genetic analysis
Discovery of new organisms
Invention of light microscopes
Monoculture farming

Question 38

1 Point

What is the correct order of groups in the Linnaean Classification system?

Kingdom
Order
Species
Class
Family
Phylum
Genus

View Answers:

Question 39

1 Point

What is the binomial name for humans?

Question 40

2 Points

What groups of organisms are eukaryotes?

Animals
Plants
Bacteria
Archaea
Fungi
Protists

Question 41

1 Point

What are the three domains?

Bacteria, Eukaryotes and Archaea
Animals, Plants and Bacteria
Eurkaryotes, Fungi and Bacteria
Protists, Eukaryotes and Prokaryotes

Question 42

1 Point

Which of the following reasons is introducing species to non-native areas bad for biodiversity?

Can introduce a competitor that outcompetes native/indigenous species
Can introduce a predator that eats native/indigenous species
Can increase the stability of an ecosystem
When people introduce a species, there are rarely any unintended consequences
Introduced species can bring new pathogens which may infect native species with no resistance to them

Question 43

1 Point

Complete the sentence: High levels of biodiversity lead to in ecosystems, since less organisms are less dependent on single species for survival.

Question 44

1 Point

All of the following are characteristics that humans would want to enhance in plants – Taste, yield, disease resistance, drought resistance and flavour. What is the common feature amongst these characteristics?

They are desirable (we want them)
They are undesirable (we don't want them)
They are neutral (we don't mind them)
They will all evolve naturally

Question 45

1 Point

Put the following steps in order to describe how genetic engineering of bacteria can be carried out to produce insulin.

Restriction enzymes are also used to cut open bacterial plasmids, this created sticky ends with complimentary bases
Restriction enzymes are used to cut DNA molecules (insulin genes from human chromosomes) producing sections with unpaired bases at each end (sticky ends)
Insulin producing genes are inserted into the plasmids and ligase is used to join the sticky ends
The plasmids are inserted back into bacteria where they can make insulin and it can be harvested

View Answers:

Question 46

1 Point

What is the role of ligase in genetic engineering using bacterial plasmids?

Cutting open DNA molecules
Cutting open plasmids
Joining the sticky ends
Inserting the plasmids back into the organism

Question 47

1 Point

Which of the following is a risk of genetic engineering of crops?

Changed nutritional value
Enhanced taste
Enhanced looks
Better value for money

Question 48

1 Point

Why might we choose to perform genetic modification rather than use selective breeding in the following scenario?

There is demand in the marketplace for farmed fish that tastes like beef.

It might not be possible to find fish that already taste at all like beef.
Fish are too numerous to selectively breed
You cannot selectively breed with fish because they spawn into the water and do not reproduce like mammals
Fish have special genes that reset after 3 generations, meaning any changes would be deleted

Question 49

1 Point

Which of the following is a realistic scenario:

Horses are bred to be slow and clumsy
Cows are bred to produce more milk
Dogs are bred to have a worse sense of smell
Birds are bred to fly higher

Question 50

1 Point

Which of the following is responsible for the variation between individuals in hair colour?

Alleles
Zygotes
DNA inherited from the father only
DNA inherited from the mother only

Question 51

4 Points

Extensive, intensive, interactions, mutations, effect

Typically within a population there will be genetic variation as a result of . Most of these have no on phenotype.

Question 52

1 Point

Read the description and match it to the correct factor. Different characteristics caused by an organism’s environment as they developed (acquired characteristics).

Environmental variation
Genetic variation
Rotational variation
Magnetic variation

Question 53

2 Points

Use some of the following words to fill in the blanks:
Gene, allele, sugar, oxide, phosphate

The complimentary base pairs that join strands of DNA together are attached at either end to a and each of those is attached to a group.

Question 54

1 Point

Which term do we use to describe the entire DNA of an individual?

Genome
Gene
Genotype
Gene pool

Question 55

1 Point

What effect does adrenaline have on the liver?

Causes the breakdown of glycogen to release glucose
Causes a spike in growth hormone
Causes a decrease in blood sugar concentration
Causes an increase in height temporarily by instructing the leg muscles to relax

Average Score
Your Score

GCSE AQA Combined Science Trilogy Biology Paper 2

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