AQA A Level Biology Past Paper Questions

Alex Lyes
Quiz by Alex Lyes, updated more than 1 year ago
Alex Lyes
Created by Alex Lyes almost 5 years ago
50
1

Description

A-Level Biology Quiz on AQA A Level Biology Past Paper Questions, created by Alex Lyes on 05/24/2016.

Resource summary

Question 1

Question
Phospholipids in a plasma membrane are arranged in a [blank_start]bilayer[blank_end] and have [blank_start]hydrophilic[blank_end] phosphate heads and [blank_start]hydrophobic[blank_end] lipid tails.
Answer
  • bilayer
  • hydrophilic
  • hydrophobic

Question 2

Question
Risk factors associated with coronary heart disease
Answer
  • Smoking
  • Gender
  • Doing exercise
  • Being average weight
  • Low salt intake

Question 3

Question
During a heart attack areas of heart muscle are deprived of [blank_start]oxygen[blank_end] because of a reduced blood flow in the [blank_start]coronary arteries[blank_end] so they cannot carry out [blank_start]aerobic[blank_end] respiration.
Answer
  • oxygen
  • coronary arteries
  • aerobic

Question 4

Question
How bacteria are destroyed by phagocytes: Phagocytes form a [blank_start]phagosome[blank_end] around the bacteria. Lysosome empties its contents into the [blank_start]phagosome[blank_end] where [blank_start]lysozyme[blank_end] is released with [blank_start]hydrolyses[blank_end] teh bacteria.
Answer
  • phagosome
  • phagosome
  • lysozyme
  • hydrolyses

Question 5

Question
An inhibitor of amylase is added to some food. How could this lower the blood glucose concentration? Fewer [blank_start]enzyme-substrate[blank_end] complexes are formed therefore less starch is digested to [blank_start]maltose[blank_end] meaning less glucose is formed which will lead to a reduced absorption of [blank_start]glucose[blank_end].
Answer
  • enzyme-substrate
  • maltose
  • glucose

Question 6

Question
Fibrosis can cause changes to FEV since [blank_start]scar[blank_end] tissue has developed. [blank_start]Scar[blank_end] tissue cannot [blank_start]recoil[blank_end] which will mean that inhalation is [blank_start]restricted[blank_end].
Answer
  • scar
  • Scar
  • recoil
  • restricted

Question 7

Question
Whole cell vaccines could cause harmful side effects since some bacteria may still be [blank_start]alive[blank_end] so the bacteria could [blank_start]reproduce[blank_end]. Also the [blank_start]toxins[blank_end] may not be affected by the heat which was used in the process of attenuating the virus.
Answer
  • alive
  • reproduce
  • toxins

Question 8

Question
Competitive inhibitors have a [blank_start]similar[blank_end] shape to the enzyme's substrate so can bind to the [blank_start]active site[blank_end]. They [blank_start]can[blank_end] be overcome by adding more substrate. Non-competitive inhibitors bind to a [blank_start]second active site[blank_end] which will [blank_start]alter[blank_end] the shape of the active site of the enzyme. These [blank_start]cannot[blank_end] be overcome by adding more substrate.
Answer
  • similar
  • active site
  • can
  • second active site
  • alter
  • cannot

Question 9

Question
A hierarchy contains groups within [blank_start]groups[blank_end] with [blank_start]no[blank_end] overlap between groups.
Answer
  • groups
  • no

Question 10

Question
Independent segregation in meiosis produces [blank_start]haploid[blank_end] cells and will arrange the homologous pairs [blank_start]randomly[blank_end].
Answer
  • haploid
  • randomly

Question 11

Question
Selective breeding could cause [blank_start]inbreeding[blank_end] and the [blank_start]higher[blank_end] possibility of mutation being passed on.
Answer
  • inbreeding
  • higher

Question 12

Question
A shift to the right in an oxygen dissociation curve will mean that the heamoglobin will have a [blank_start]lower[blank_end] affinity for oxygen which means that oxygen can be [blank_start]unloaded[blank_end] at respiring cells so the rate of respiration will be [blank_start]higher[blank_end].
Answer
  • lower
  • unloaded
  • higher
  • loaded
  • the same
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