Biology Year 12 Random Retrieval

This quiz contains all the questions in the year 12 biology section. The website will pick 20 questions at random.

1 / 20

Which of the following is true about all mutagenic agents?

They always cause a mutation.

They increase the probability of a mutation.

They are only harmful in large amounts.

2 / 20

What is the order of events from the diagram for Meiosis division 2?

3, 4, 1, 6

7, 4, 2, 6

6, 7, 5, 2, 8

3 / 20

What does RNA stand for?

Ribulose Nucleic Acid

Ribo Nucleic Acid

Rhino Nucleic Acid

4 / 20

What is an 'homologous chromosome'?

The same chromosome ( same number e.g. 21) but possibly with different alleles

An identical copy of a chromosome, with identical alleles.

When two alleles are the same, on a pair of chromosomes.

Any two chromosomes.

5 / 20

How would you describe the shape of prokaryotic chromosome, when compared to a eukaryotic chromosome?

Circular

Linear

Double Stranded

Double helix

6 / 20

Which of the following is an example of a 'source' ?

A photosynthesising leaf.

A Respiring meristem.

A storage tuber in the root.

7 / 20

Through which part does the water evaporate out of the leaf?

Guard Cells

Stomata

Lower Epidermis Cells

8 / 20

What has happened at position A?

The Atrioventricular valves open.

The Atrioventricular valves close.

The Semi- Lunar valves open.

9 / 20

What happens during Ventricular Systole?

Atrial wall is relaxed, but the ventricular wall is contracted. The Atrioventricular valve is closed, but the Semi Lunar valve is open.

Atrial wall is relaxed, but the ventricular wall is contracted. The Atrioventricular valve is open, but the Semi Lunar valves are closed.

Atrial and ventricular walls are contracted, and the Atrioventricular valve is closed. The Semi Lunar valves are open.

10 / 20

As blood moves away from the heart, it travels in which type of blood vessel?

Artery

Vein

Aterioles

11 / 20

Why is it useful that the Bohr Effect reduces the percentage saturation of Haemoglobin with oxygen?

reduction in saturation also causes a reduction in partial pressure, so a concentration gradient is maintained.

The oxygen has unloaded from the haemoglobin, so it can be exhaled via the lungs.

The oxygen has unloaded from the haemoglobin, so it is available for aerobic respiration in the tissues

12 / 20

Which letter represents the part that can control water loss?

A

B

C

D

13 / 20

Which term best describes breathing?

Ventilation

Respiration

Inhalation

Exhalation

14 / 20

Which type of electron microscope produced this image?

TEM

SEM

15 / 20

Which type of electron microscope produced this image?

TEM

SEM

16 / 20

Why might structure 'A' be useful in gut bacteria ?

Lubricates; so it can move between endothelium cells.

Allows it to replicate

Protects against the acid

17 / 20

Name this organelle.

Rough Endoplasmic Reticulum

Smooth Endoplasmic Reticulum

Golgi Body

18 / 20

Which bond is broken when ATP is used?

Between A and A

Between A and B

Between B and C

19 / 20

Other than peptide bonds, a folded protein also contains:

i) Hydrogen Bonds
ii) Ionic Bonds
iii) Di-Sulphide Bridges.

Which type of bond forms between two cysteine R groups?

i)

ii)

iii)

20 / 20

What type of bond joins a fatty acid to a glycerol molecule?

Peptide bond

Liptide bond

Ester Bond

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