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

If you start with a single copy of template DNA, how many copies would you have after 10 cycles?

20

200

512

1024

2 / 20

How would the cDNA base sequence of a gene differ to the normal genomic base sequence of a gene?

No exons

No Introns

Double stranded

Single stranded

3 / 20

Long term exposure to Oestrogen can increase the risk of developing breast cancer. The exact mechanism is still not fully understood, but which of the following is definitely NOT a suggested mechanism ?

Oestrogen stimulates mitosis in breast tissue.

Oestrogen stimulates mitosis in cancerous breast tissue.

Oestrogen binds to RNA and mutates it post transcription.

Oestrogen binds to DNA and mutates it directly.

4 / 20

What type of mutation causes a sequence of bases to be reversed?

Substitution

Addition

Deletion

Inversion

5 / 20

Which two molecules does DNA Polymerase join together?

Phosphate and Organic Base.

Phosphate and Deoxyribose.

Deoxyribose and Organic Base.

Ribose and Organic Base.

6 / 20

What attracts new 'free' nucleotides to the exposed template strand during DNA replication?

Partial charges on the phosphate.

Partial charges on the Deoxyribose.

Partial charges on the ribose.

Partial charges on the organic base.

7 / 20

How many samples should you take to get reliable data?

10% of the area.

Until the running mean stays the same.

5 each.

Until you get bored.

8 / 20

All the alleles of every gene in a breeding population' is the definition for what?

Gene Pool

Allele Frequency

Allele Variants

Gene Frequency

9 / 20

Can the potential difference created by a receptor have different values depending on the size of the stimulus?

Yes

No

10 / 20

What effect do inhibitory synapses have on the post-synaptic membrane?

Depolarise

Repolarise

Hyperpolarise

11 / 20

What ion is moving during process '3' on the above diagram?

Sodium Ions

Potassium Ions

Phosphate Ions

12 / 20

Name protein C in the above diagram.

Sodium Ion Channel

Potassium Ion Channel

Sodium-potassium pump

13 / 20

Across a resting human neurone plasma membrane, what is the average potential difference?

+70mV

-70mV

-70V

14 / 20

In the above experiment, you hypothesised that a woodlouse responds by kinesis to a change in light intensity. What would be the best way to measure a response which shows kinesis?

By putting them on the lighter side, and seeing if they move to the darker side.

By counting how many woodlice are on the dark side after on minute.

By measuring how often each woodlice turns/ changes direction in one minute.

15 / 20

What does this experiment by Went show?

That uneven distribution of a chemical from a shoot tip controls growth.

That even distribution of a chemical from a shoot tip controls growth.

That gelatin controls growth.

16 / 20

In a woodland, 8,150 kJ m^-2yr^-1 is lost as heat from respiration. The gross primary productivity of the wood is15,000 kJ m^-2yr^-1. What is the net primary productivity of the woodland?

6.85 x 10 ⁵ kJ m^-2yr^-1

6.85 x 10 ⁴ kJ m^-2yr^-1

6.85 x 10 ³ kJ m^-2yr^-1

17 / 20

Name the technique detailed in the above diagram ( spell it correctly!)

18 / 20

Which chemical does 'E' represent?

NAD

NADP

NADPH

19 / 20

Why can it be advantageous to a plant for more of process 'G' to occur?

More ATP is synthesised

More reduced NADP is synthesised

More Glucose is synthesised

20 / 20

Which membrane is represented by 'C' on the diagram?

Plasma

Thylakoid

Inner

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