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AQA A2 Biology Questions
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Questions in this quiz (40)
1Photolysis of water increases the concentration of protons in the [blank_start]thylakoid[blank_end] space.
- Athylakoid
2Rubisco catalyses the reaction of [blank_start]RuBP[blank_end] with CO2 in the [blank_start]Calvin[blank_end] Cycle.
- ARuBP
- BCalvin
3[blank_start]Glycerate[blank_end] Phosphate is converted to [blank_start]triose[blank_end] phosphate as [blank_start]1[blank_end] ATP is converted to ADP +Pi and 1 NADPH is converted to NADP ([blank_start]reducing[blank_end] the GP)
- A1
- B2
- Ctriose
- Dglycerate
- EGlycerate
- FTriose
- Greducing
- Hoxidising
4Biomass is the [blank_start]total[blank_end] mass of [blank_start]living[blank_end] material in a specific area at a specific time.
- Atotal
- Bincomplete
- Cliving
- Ddead
5How much energy moves from one organism to another?
- A10%
- B100%
- C50%
- D40%
6The [blank_start]shorter[blank_end] the food chain, the [blank_start]less[blank_end] energy loss there is so the more productive it is.
- Ashorter
- Blonger
- Cless
- Dmore
7Complete this diagram of the nitrogen cycle
- AAtmospheric Nitrogen
- BNitrates
- CNitrites
- DAmmonium
8Complete this diagram of the Phosphorous Cycle
- AWeathering
- BDetritus
- Csolution
- DUplifting
- Eorganic
9Complete these statements about intensive farming:
-> Economically [blank_start]beneficial[blank_end]
-> [blank_start]Less[blank_end] waste
-> [blank_start]Reduces[blank_end] biodiversity
-> [blank_start]Increases[blank_end] productivity
-> Takes nutrients out of soil- Abeneficial
- Bharmful
- CLess
- DMore
- EReduces
- FIncreases
- GIncreases
- HDecreases
10The products of glycolysis are:
[blank_start]2[blank_end] ATP
[blank_start]2[blank_end] reduced NAD
[blank_start]2[blank_end] pyruvate- A2
- B3
- C1
- D2
- E3
- F1
- G2
- H3
- I1
11Complete this flow chart for glycolysis
- AGlucose
- BHexose Biphosphate
- C2 x Triose Phosphate
- D2 x Pyruvate
12The link reaction occurs in the mitochondrial [blank_start]matrix[blank_end]. CO2 is released from pyruvate and the pyruvate is [blank_start]reduced[blank_end] by NAD. Co enzyme A combines with the acetate to form [blank_start]acetyl[blank_end] CoA.
- Amatrix
- Boxidised
- Cacetyl
13Complete this diagram of the Krebs Cycle
- ACitrate
- BOxaloacetate
- CCo A
14Taxis is a response that is determined by the direction of the stimulus.
- ATrue
- BFalse
15Kinesis is a plant growth movement in response to a directional stimulus.
- ATrue
- BFalse
16In cell tips IAA causes cells to [blank_start]elongate[blank_end] whereas in the root tips it [blank_start]inhibits[blank_end] elongation.
- Aelongate
- Bshorten
- Cinhibits
- Dcauses
17As pressure is applied to the Pacinian corpuscle, the shape of the membrane changes and stretch mediated [blank_start]sodium[blank_end] ion channels are opened and [blank_start]sodium[blank_end] ions to flood in.
- Asodium
- Bpotassium
- Ccalcium
- Dsodium
- Epotassium
- Fcalcium
18Rod cells respond to [blank_start]low[blank_end] light and many receptors share 1 neurone. They give [blank_start]back and white[blank_end] images. Cone cells only respond to [blank_start]high[blank_end] light intensities and each have their own sensory neurone. They give [blank_start]colour[blank_end] images.
- Alow
- Bback and white
- Chigh
- Dcolour
19Heart rate is controlled by the [blank_start]autonomic[blank_end] nervous system. The [blank_start]sympathetic[blank_end] nervous system speeds up the heart rate and the [blank_start]parasympathetic[blank_end] slows it down. Changes are controlled by the medulla oblongata in the [blank_start]brain[blank_end]. Changes occur due to chemical (by [blank_start]chemoreceptors[blank_end]) and pressure changes (by [blank_start]baroreceptors[blank_end])
- Aautonomic
- Bsensory
- Ccentral
- Dsympathetic
- Eparasympathetic
- Fparasympathetic
- Gsympathetic
- Hbrain
- Iheart
- Jpancreas
- Kchemoreceptors
- Lbaroreceptors
- Mbaroreceptors
- Nchemoreceptors
20The all or nothing principle states that if the threshold [blank_start]isn't[blank_end] reached then an action potential won't fire.
- Aisn't
- Bis
21The refractory period means that action potentials [blank_start]don't[blank_end] overlap and limits the frequency at which the neve impluse can be transmitted. It causes the action potential to be [blank_start]unidirectional[blank_end].
- Adon't
- Bdo
- Cunidirectional
- Dbidirectional
22Depolaristion occurs [blank_start]between[blank_end] Schwann cells in the [blank_start]nodes of Ranvier[blank_end].
- Abetween
- Bnodes of Ranvier
23Select the incorrect statement:
During the contraction of a sarcomere,
- AI band gets smaller
- BThe sarcomere gets smaller
- CThe A-bands get smaller
- DThe H zones get smaller
24Slow twitch muscle fibres get their energy from aerobic respiration.
- ATrue
- BFalse
25Select the statements that are true about fast twitch muscle fibres
- AGet tired quickly
- BUsed for posture
- CContract quickly
- DGet their energy from anaerobic respiration
- EReddish colour becuase they contain lots of myoglobin
26The polar bear is an [blank_start]endotherm[blank_end] so [blank_start]will[blank_end] generate it's own heat from metabolic reactions. Their body temperature [blank_start]is[blank_end] kept constant despite the envrioment.
- Aendotherm
- Bectotherm
- Cwill
- Dwill not
- Eis
- Fis not
27Insulin [blank_start]lowers[blank_end] blood glucose concentration whereas glucagon [blank_start]increases[blank_end] it. Deviation from the norm is detected by α and β receptors in the [blank_start]islets of langerhans[blank_end].
- Alowers
- Bincreases
- Cislets of langerhans
- Dhypothalamus
- Eliver
28Complete this diagram of the nephron
- ABowman's capsule
- BProximal
- CDistal
- DCollecting duct
29Co-dominance is when [blank_start]both[blank_end] alleles are expressed in the phenotype.
- Aboth
30Sex-linkage is when the allele that codes for a characteristic is located on a [blank_start]sex[blank_end] chromosome. XY individuals will express a characteristic even when it is recessive since they only have [blank_start]1[blank_end] copy of it.
- Asex
- B1
31Complete the statements regarding the assumptions for the Hardy-Weinberg Principle:
-> [blank_start]Large[blank_end] population
-> [blank_start]No[blank_end] immigration
-> [blank_start]No[blank_end] mutations
-> [blank_start]Random[blank_end] mating- ALarge
- BSmall
- CNo
- DLots of
- ENo
- FMany
- GRandom
- HSelective
32[blank_start]Allopatric[blank_end] Speciation
Has geographical isolation which means that different alleles will be advantageous for the different populations so eventaually the 2 populations will change so much that they will become different species.- AAllopatric
33If there is a mutation in a tumour supressor gene, it will become inactivated and the cell will begin to divide uncontrolably.
- ATrue
- BFalse
34A mutated proto-oncogene becomes an oncogene.
- ATrue
- BFalse
35Unipotent cells can differentiate into a few different types of cell.
- ATrue
- BFalse
36siRNA in [blank_start]plants[blank_end] is [blank_start]double[blank_end] stranded and will bind to target mRNA and [blank_start]cut[blank_end] it so it cannot be translatd.
- Aplants
- Bmammals
- Cdouble
- Dsingle
- Ecut
- Fduplicate
37Place the following statements about how the gene machine works in the correct order:
[blank_start]2[blank_end]) Nucleotides are added step by step in the correct order
[blank_start]1[blank_end]) Sequence is designed
[blank_start]3[blank_end]) Short sections of DNA called oligonulceotides are produced and joined together into longer DNA fragments- A2
- B1
- C3
- D1
- E2
- F3
- G3
- H1
- I2
38During the process of PCR, the sample is heated to [blank_start]95°C[blank_end] to break the H bonds between the strands. It is then cooled to [blank_start]55°C[blank_end] so the primers can anneal. It is heated again to [blank_start]72°C[blank_end] so the DNA polymerase can work.
- A95°C
- B55°C
- C72°C
39A VNTR is a V[blank_start]ariable[blank_end] N[blank_start]umber[blank_end] T[blank_start]andem[blank_end] R[blank_start]epeat[blank_end]
- Aariable
- Bumber
- Candem
- Depeat
40During genetic fingerprinting, the shorter fragments move the least.
- ATrue
- BFalse
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- A-Level Biology Quiz on AQA A2 Biology Questions, created by Alex Lyes on 14/06/2017.
- Author
- Alex Lyes
- Language
- English
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