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GCSE AQA Combined Science Trilogy Biology Paper 2
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Question 1 of 33Question 1[4 marks]
Testosterone, oestrogen, FSH, IVF, menstruation, progesterone, ovulation, uterus
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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 .
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Question 2 of 33Question 2[1 mark]
Which of the following is the role of luteinising hormone (LH)?
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Question 3 of 33Question 3[2 marks]
Choose the correct set of sex chromosomes to fill in this genetic diagram (genetic cross).
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Question 4 of 33Question 4[2 marks]
Drag and drop to match the role and structure
- Physical characteristics of an organism
- The alleles an organism has
- Phenotype
- Genotype
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Question 5 of 33Question 5[2 marks]
Drag and drop to match the base pairs which form DNA
- T
- G
- A
- C
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Question 6 of 33Question 6[4 marks]
Use some of the following words to fill in the blanks:
Allele, gene, chromosome, amino acids, proteins, lipids, DNA-
A is a small section of DNA on a chromosome. Each codes for a particular sequence of , to make a specific .
Correct 4 / 4 PointsIncorrect / 4 Points -
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Question 7 of 33Question 7[1 mark]
Which term do we use to describe the relationships between species that depend on each other for resources?
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Question 8 of 33Question 8[3 marks]
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
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Question 9 of 33Question 9[2 marks]
Conservation of habitats is also important to protect endangered species. Which of the following are potential reasons for maintaining high levels of biodiversity?
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Question 10 of 33Question 10[2 marks]
Which of the following are benefits to protecting the rainforests of the world?
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Question 11 of 33Question 11[2 marks]
Drag and drop to match the factor to the correct type
- Disease
- Water availability
- Biotic
- Abiotic
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Question 12 of 33Question 12[2 marks]
Which of the following are strategies organisms use to adapt to changing abiotic conditions?
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Question 13 of 33Question 13[1 mark]
Blood glucose levels are controlled with insulin and glucagon to maintain suitable levels of blood glucose concentration. What type of feedback mechanism is this?
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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.
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Question 14 of 33Question 14[3 marks]
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
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Question 15 of 33Question 15[4 marks]
Which of the following organisms belong to the kingdom – animals?
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Question 16 of 33Question 16[1 mark]
Which modern development led to the suggestion of the Three-Domain System?
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Question 17 of 33Question 17[2 marks]
What groups of organisms are eukaryotes?
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Question 18 of 33Question 18[3 marks]
Which of the following reasons is introducing species to non-native areas bad for biodiversity?
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Question 19 of 33Question 19[3 marks]
Put the following steps in order to describe how genetic engineering of bacteria can be carried out to produce insulin.
- Insulin producing genes are inserted into the plasmids and ligase is used to join the sticky ends
- Restriction enzymes are used to cut DNA molecules (insulin genes from human chromosomes) producing sections with unpaired bases at each end (sticky ends)
- Restriction enzymes are also used to cut open bacterial plasmids, this created sticky ends with complimentary bases
- The plasmids are inserted back into bacteria where they can make insulin and it can be harvested
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Question 20 of 33Question 20[1 mark]
Which of the following is a risk of genetic engineering of crops?
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Question 21 of 33Question 21[4 marks]
Extensive, intensive, interactions, mutations, effect
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Typically within a population there will be genetic variation as a result of . Most of these have no on phenotype.
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Question 22 of 33Question 22[2 marks]
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.
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Question 23 of 33Question 23[1 mark]
Which term do we use to describe the entire DNA of an individual?
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Question 24 of 33Question 24[6 marks]
A biologist wants to investigate the abundance of crabs on a rocky shoreline. (enter your answer)
Describe a method the biologist could use to estimate the abundance of crabs in this environment.
You should include:
- how to set up the sampling method
- how to collect and record data
- how to ensure accuracy and reliability of results.
Correct 6 / 6 PointsIncorrect / 6 Points -
Question 25 of 33Question 25[1 mark]
Sensory neurones have a fatty layer of insulation, what is it called? (short answer)
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Question 26 of 33Question 26[1 mark]
What are the three domains? (short answer)
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Question 27 of 33Question 27[1 mark]
What term do we use to describe the release of an egg from the ovary? (short answer)
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Question 28 of 33Question 28[2 marks]
What effect does adrenaline have on the liver? (short answer)
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Question 29 of 33Question 29[2 marks]
What effects does adrenaline have on the heart? (short answer)
Correct 2 / 2 PointsIncorrect / 2 Points -
Question 30 of 33Question 30[1 mark]
Evidence for Darwin’s Theory of Evolution was found when resistance to what emerged in some species of bacteria? (short answer)
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Question 31 of 33Question 31[1 mark]
Capillaries are only one cell thick and have thousands of branches. What is the function of capillaries? (short answer)
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Question 32 of 33Question 32[2 marks]
What are two systems which allow your body to respond to its surroundings? (short answer)
Correct 2 / 2 PointsIncorrect / 2 Points -
Question 33 of 33Question 33[1 mark]
What is the best way to reduce the risk of cardiovascular disease? (short answer)
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