Biology Molecules Random Retrieval

This quiz contains all the questions in the Biology Molecules section. The website will pick 20 questions at random.

1 / 20

Which of the following molecules contain a phosphate group?

Amino Acids, Nucleotides and ATP

Amino Acids and ATP

Nucleotides and ATP

2 / 20

Are the bonds between water molecules stronger or weaker than covalent bonds?

Stronger

Weaker

3 / 20

What type of bond forms between water molecules?

Hydrogen

Ionic

Hydroxide

4 / 20

Which bond is broken when ATP is used?

Between A and A

Between A and B

Between B and C

5 / 20

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

Obama Fragments

Kawasaki Fragments

Okasaki Fragments

6 / 20

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

1

2

3

7 / 20

What type of bond forms between complementary base pairs?

Phosphodiester

Ionic

Hydrogen

8 / 20

Describe what the line would look like when a non-competitive inhibitor was added to the reaction.

The line would increase less steeply, but it would eventually plateau at the same rate as withut an inhibitor.

The line would be less steep at the start, and would plateau at a rate below the line without an inhibitor.

The line would go up at the same gradient at the start, but would then plateau at a lower rate.

9 / 20

Where do non-competitive inhibitors bind?

The Active Site.

Somewhere on the protein other than the active site.

10 / 20

Describe what the line would look like when a competitive inhibitor was added to the reaction.

The line would increase less steeply, but it would eventually plateau at the same rate as withut an inhibitor.

The line would be less steep at the start, and would plateau at a rate below the line without an inhibitor.

The line would go up at the same gradient at the start, but would then plateau at a lower rate.

11 / 20

On the above graph, lines A and B represent the same enzyme, in identical conditions; the only difference is the temperature.

What would happen to the red line after this point ?

It would eventually plateau below the black line

It would eventually plateau on the black line.

It would not plateau, but continue straight.

12 / 20

On the above diagram, which letter represents the product?

C

D

E

13 / 20

Enzymes are biological catalysts: they speed up reactions. This allows the reactions to happen at...

higher temperatures

lower temperatures

lower pH's

14 / 20

Which of the following is the best description of the 'Quaternary Structure' of a protein?

A polypeptide and an extra group such as a prosthetic group (like haem in hemoglobin).

More than one polypeptide held together by bonds.

The folding of a polypeptie into a complicated globular structure.

15 / 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)

16 / 20

How many naturally occurring amino acids are there in all living things?

20

16

64

17 / 20

Which of the following is not true about triglycerides?

Insoluble in water.

Insoluble in lipids.

Soluble in lipids.

18 / 20

What elements are lipids made out of?

Carbon and Hydrogen

Carbon, Hydrogen and Oxygen

Carbon, Hydrogen , Oxygen and Nitrogen.

19 / 20

Which polysaccharide do animal cells use as storage?

Starch

Fat

Glycogen

20 / 20

What type of reaction is used to join two monosaccharides?

Hydrolysis

Condensation

Phosphorylation

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