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

A sheep cheek cell which is not dividing has 54 chromosomes, how many chromatids will be present during Meiotic Prophase 1 in the testes?

27

54

108

2 / 20

What does the 'm' stand for in mRNA?

Migrating

Multiple

Messenger

3 / 20

Which direction will the bubble move?

Towards the beaker

Towards the plant

4 / 20

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

Moles

Kilo Pascals

Percentage

5 / 20

Which letter is the spiracles?

A

B

C

D

6 / 20

Forced Expiratory Volume (FEV) is the maximum volume of air that can be breathed out in 1 second. What is the FEV for person B?

0.5dm³

1.5 dm³

1 dm³

2 dm³

7 / 20

Pulmonary Ventilation Rate ( PVR) -= Tidal Volume x breathing rate. If someone take 60 breaths over 5 minutes, and takes in 230 cm³, what is their PVR?

2.76 dm³ min ^-1

2760 dm³ min ^-1

13.8 dm³ min ^-1

0.23 dm³ min ^-1

8 / 20

Digested pathogen proteins can be displayed on the cell surface membrane of a phagocyte. What is this called?

Type your answer.

9 / 20

Which organelle will be found in pellet A?

Mitochondria

Ribosomes

Nucleus

10 / 20

Use the scale bar ( assume it measures 2cm) to calculate the actual diameter of virus particle A ( Assume it measures 3.5cm)

87.5 nm

875 nm

110 nm

11 / 20

Which of these structures is completely absent in eukaryotic cells?

C

D

E

12 / 20

What is the main function of this organelle?

Processing and packaging Lipids

Synthesising and processing lipids

Folding and processing proteins

13 / 20

Which equation represents the action of ATP Synthase?

A

B

C

D

14 / 20

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

Obama Fragments

Kawasaki Fragments

Okasaki Fragments

15 / 20

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

1

2

3

16 / 20

How do competitive inhibitors bring about a decrease in rate?

By changing the shape of the active site.

By changing the charge on the active site.

By binding to, therefore blocking the active site.

17 / 20

Other than peptide bonds, a folded protein also contains: i)Hydrogen Bonds ii) Ionic Bonds iii) Di-Sulphide Bridges. Which type of bond/bonds form and hold the Tertiary Structure of a protein in place?

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

Which type of bond/bonds form and hold the Tertiary Structure of a protein in place?

i) and iii)

iii)

i), ii) and iii)

18 / 20

Glycine and Alanine are two common amino acids. How are their structures different to each other?

They will have different R groups

They will form polypeptide chains of different lengths.

The peptide bonds between them will be diferent

19 / 20

What is the formula for glycerol?

C₄O₄H₈

C₃O₃H₈

C₃O₃H₆

20 / 20

What type of reaction is used to join two monosaccharides?

Hydrolysis

Condensation

Phosphorylation

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