Biology Year 13 Random Retrieval

This quiz contains all the questions in the year 13 biology section. The website will pick 20 questions at random.

1 / 20

Usually the cut out gene is inserted into a vector. Which of the following is a vector for use in genetic modification of bacteria?

Mosquito

Plasmid

Rat

E Coli

2 / 20

What is the active site of a restriction endonuclease complementary too?

Specific histone structure

Specific bacterial protein

Specific promoter sequence

Specific base sequence

3 / 20

What is humus?

The soil

The organic content of soil

The mineral content of the soil

4 / 20

Between stages B and C, what will happen to soil depth?

Increase

Decrease

5 / 20

Which statistical test would we use to see if the observed phenotypes are different from the expected phenotypes?

Standard Deviation

Students' t Test

Spearmanns Rank

Chi Squared

6 / 20

This gene interaction once again alters the phenotype ratio. Which type of Epistatic allele will produce a ratio of 9:3:4?

Recessive Epistatic alleles

Dominant Epistatic alleles

Dominant and Recessive Epistasis

Duplicate Interaction

7 / 20

What is the best definition of a 'recessive allele'?

It is the weaker allele which sometimes shows the trait.

It is the weaker allele which never shows the trait.

Two alleles are needed to show the trait.

Only one allele is needed to show the trait.

8 / 20

What is the role of phosphocreatine in muscle contraction?

As a respiratory substrate to feed into glycolysis.

Hydrolysis of ATP

Phosphorylation of ATP

9 / 20

Which of the above diagrams represents the myofilaments a 'Z line' in muscle?

A

B

C

10 / 20

In the above image, name the unit represented by B.

Sarcomere

Sarcometre

Sarcolemma

11 / 20

What is the structural adaptation which gives rods high sensitivity compared to rod cells?

Single rod cells synapse with a single bipolar neurone.

Many rod cells can synapse with a single bipolar neurone.

The pigment in cones ( Photopsin) is less sensitive than that in rods (Rhodopsin).

12 / 20

What is the structural adaptation which give cones high visual acuity compared to rod cells?

Single cone cells synapse with a single bipolar neurone.

Many cone cells can synapse with a single bipolar neurone.

The pigment in cones ( Photopsin) is more sensitive than that in rods (Rhodopsin).

13 / 20

Why is the speed of conduction faster on myelinated neurones?

The sheath creates a hydrostatic pressure, pushing the ions and therefore the action potential along.

The sheath keeps the axon warmer, therefore diffusion is faster.

Due to action potentials only occurring at the gaps between the sheath, so the impulse 'jumps' between them.

14 / 20

Which process can occur due to the actions of Nitrosomonas bacteria?

E

F

C

15 / 20

Which process can occur due to the actions of Nitrosomonas bacteria?

F

B

C

16 / 20

Which would be the most accurate method of sampling dry biomass?

Burning the sample in a calorimeter in the presence of oxygen.

Taking the mass of the sample, then drying in an oven at a very low temperature, until the mass remains constant.

Taking the mass of the sample, then drying in an oven at a very high temperature, until the mass remains constant.

17 / 20

Is this the correct equation for anaerobic respiration in animal cells? : Glucose → Carbon Dioxide + Lactic Acid

Yes

No

18 / 20

How many carbon atoms does molecule X contain?

3

5

6

19 / 20

If six molecules of molecule C are produced, how many will be regenerated into substance A?

4

5

6

20 / 20

Where does the energy needed for the splitting of water originate?

ATP

heat

light

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