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

Sometimes, two marker genes are used: The first marker gene is often an antibiotic resistance gene to show if the plasmid is present; the bacteria can only grow on a plate containing the antibiotic, if they have the antibiotic resistance gene on the plasmid. The second is often a gene with a colour change, which is broken by the insertion of the fragment.

e.g. An example of a gene to test for the presence of a fragment is Green Fluorescent Protein (GFP) glowing or not. What would a bacterial plate look like that contained an antibiotic, and was spread with bacteria which had been transformed with a plasmid and had a new gene fragment in?

No bacterial colonies.

A few bacterial colonies that glow green.

A few bacterial colonies that do not glow green.

Many bacterial colonies that glow green.

2 / 20

What do we call a transcription factor that 'turns on ' genes?

Expresser

Starter

Promoter

Activator

3 / 20

If hypomethylation (reduced methylation) happens to a proto-oncogenes gene, what effect will this have on the rate of mitosis ?

Increase

Decrease

Stay the same

4 / 20

If a section of DNA contains 21% base C, what percentage will base A have?

0.21

0.29

0.25

0.4

5 / 20

What term do we use to describe lichen and mosses in succession?

Frontier

Pioneer

Cavalier

6 / 20

A student is using a quadrat to estimate percentage cover of clover on the school field. What is the most accurate way to do this?

Laying down a tape-measure, and counting every clover plant that touches the line.

Using an open frame quadrat, and estimating by eye.

Using a gridded quadrat, and counting each small square with over half covered.

7 / 20

What type of variation is show in the graph?

Directional

Disruptive

Stabilising

8 / 20

In the creation of gametes, which process mixes up the alleles?

Independent Segregation

Homologous pairing

Spindle formation

Metaphase

9 / 20

What is the formula for the Hardy Weinberg equation?

p² + pq + q² = 1

2p + pq ² + 2q = 1

p² + 2pq + q² = 1

p² + 2 pq + q ²= 0

10 / 20

True or False - Axons with a narrower diameter have a faster speed of conduction.

TRUE

FALSE

11 / 20

True or False - The speed of conduction along an unmyelinated neurone is around 5 m/s ( jogging pace).

TRUE

FALSE

12 / 20

In the above experiment on woodlice, how would you make the method more valid?

Change the light intensity on the light side with each repeat.

Place each woodlice in the centre of the chamber at the start of each repeat.

Make the dark- side dark and damp.

13 / 20

In root tips growing parallel to the soil, where will the highest concentration of IAA be found ?

The upper surface

The lower surface

Both even

14 / 20

What does GPP represent in a given area?

The amount of chemical energy produced, minus respiratory losses.

The total amount of carbon fixed by photosynthesis.

The total amount of chemical energy produced from light energy.

15 / 20

The diagram represents anaerobic respiration, name substance 'X'.

Triose Phosphate

Pyruvate

Ribulose Bisphosphate

16 / 20

Is the column for the ETC reaction in the above diagram correct?

Yes

No

17 / 20

What is the final electron acceptor of the ETC?

Oxygen

Water

H⁺

18 / 20

What is represented by molecule D?

Acetyl Co A

Co A

Carbon dioxide

19 / 20

Which graph represents the effect of changing the temperature on the rate of photosynthesis?

B

C

D

20 / 20

What is structure D?

PS1

PS2

PS3

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