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

What type of selection is shown on the graph?

Length of a giraffe's neck.

Thickness of blubber in a weddel seal.

Human Birth Weight.

2 / 20

Stray dogs in the Moscow Subway have learnt to beg for food, and are able to identify humans most likely to feed them. What type of adaptation is this ?

Physiological

Anatomical

Behavioural

3 / 20

A mutation in a population of bed bugs in New York City caused the bedbugs to have a thicker, waxier exoskeleton. Why will the allele for thicker , waxier exoskeleton in bed bugs increase in the population?

The thicker exoskeleton makes it easier to lay eggs. More eggs are laid, so more bed bugs with thicker exoskeleton.

The thicker exoskeleton means that the insecticide used to kill them is no longer effective. The thicker exoskeletal bed bugs are more likely to reproduce and pass on the new allele.

The waxy exoskeleton is waterproof, so they are less likely to drown.

4 / 20

Which enzyme is used in transcription?

RNA Polymerase

DNA Polymerase

Helicase

5 / 20

Which direction will the bubble move?

Towards the beaker

Towards the plant

6 / 20

What is the stroke volume of a patient if their cardiac output is 3500 cm³ min^-1, and their heart rate is 70 bpm?

50 dm³

50 cm³

500 cm³

7 / 20

What is it called, when Carbon Dioxide causes the dissociation curve to shift?

Bear Effect

Bohr Effect

Bahrain Effect

8 / 20

What unit do we use to measure the concentration of oxygen in the tissue?

Moles

Kilo Pascals

Percentage

9 / 20

Haemoglobin is a quaternary protein, how many polypeptide chains make up a single molecule of haemoglobin?

2

3

4

10 / 20

Which term best describes breathing?

Ventilation

Respiration

Inhalation

Exhalation

11 / 20

Which letter represents the diaphragm?

G

F

E

D

12 / 20

Which protein needs to be used first in the co-transport of glucose across a membrane. For example in the ileum.

A

B

C

13 / 20

What is the name of molecule B?

Ribulose

Ribose

Deoxyribose

14 / 20

What name is given to the DNA fragments labelled C in the diagram?

Obama Fragments

Kawasaki Fragments

Okasaki Fragments

15 / 20

True or False : The enzyme DNA polymerase can only bind to double stranded DNA?

TRUE

FALSE

16 / 20

How many bonds form between a 'C' and a 'G' ?

1

2

3

17 / 20

Which of the following is not true about triglycerides?

Insoluble in water.

Insoluble in lipids.

Soluble in lipids.

18 / 20

Fats that contain unsaturated fatty acids (compared to saturated) are more likely to have:

A lower melting point.

A higher melting point.

19 / 20

The animal branched molecule, has many more branches than the plant version. Why is this?

It is insoluble.

It is stronger, and adds to the structure in muscles.

More sites for hydrolytic enzymes to attach, for swift energy release.

20 / 20

It is highly branched, what type of glycosidic bond form the base of the branches?

1-4 Glycosidic Bond

1-6 Glycosidic Bond

1-2 Glycosidic Bond

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