Curriculum
Course: AQA A Level Biology 7402
Login

Curriculum

AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

4.6.4 Conservation and Farming – Unit exam questions

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 12
  • Passing grade: B+
Start Quiz
1.
IGCSE Biology 21.1 Genetic modification - Question 1
IGCSE Biology 21.1 Genetic modification - Question 1
A
B
C
D
2.
IGCSE Biology 21.1 Genetic modification - Question 4
IGCSE Biology 21.1 Genetic modification - Question 4
A
B
C
D
3.
Which statement best describes Genetic code?
The synthesis of mRNA from a DNA template in the nucleus, catalysed by RNA polymerase.
The rules by which base triplets in mRNA specify amino acids.
The three bases on a tRNA molecule complementary to an mRNA codon.
A change in the base sequence of DNA, such as a substitution, insertion or deletion.
4.
Students compare species richness in a mown lawn and a wild meadow using quadrats. What is the dependent variable?
Type of area
Quadrat size
Number of plant species
Time of sampling
5.
Which statement best describes Generation time?
The time taken for a population of bacteria to double in number.
The initial growth phase in which cells adapt, synthesising enzymes, with little increase in number.
The phase in which cells die faster than they are produced, due to lack of nutrients and toxic waste.
The phase in which cells divide at a constant, maximal rate so numbers double each generation.
6.
An allele that codes for all actin molecules to be synthesized in linear chains would result in
SAT Biology - Question 185
A
B
C
D
E
7.
Which statement best describes Epigenetics?
Which statement best describes Epigenetics?
One genotype producing different phenotypes in different environments.
Changes with seasons.
Adding methyl groups; silences genes.
Changes in gene expression without DNA sequence change.
8.
Which is NOT a way energy is lost between trophic levels?
Respiration
Photosynthesis
Egestion
Excretion
9.
During which phase do sister chromatids separate in mitosis?
Prophase
Metaphase
Anaphase
Telophase
10.

Biodiversity can be measured within a habitat using

the mass of soil
the number of habitats
rainfall
species richness
11.
A genetic mutation results in a DNA sequence that continues to synthesize the same protein, at the same rate as a nonmutated sequence. This mutation would be BEST classified as a
SAT Biology - Question 130
A
B
C
D
E
12.
Complete the statement: Hydrangea colour depends on soil ______.
Complete the statement: Hydrangea colour depends on soil ______.
Seasonal variation
Epigenetics
silences
pH
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
Part of 4. Genetics, Variation and Interdependence — see every lesson and quiz in this unit.
Accepted payment methods