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

Water has a high latent heat of vaporisation, why is this useful to organisms?

So only a little energy is used to heat up the aqueous cells.

So only a little energy is transferred during evaporation

So a lot of energy is transferred during evaporation

3 / 20

What charge will be on the hydrogen atoms in this molecule?

A full negative charge

A partial Negative charge

A partial positive charge

4 / 20

What type of molecule is part C ?

Nucleotide

Organic Base

Porphyrin Ring

5 / 20

What is the name of molecule B?

Ribulose

Ribose

Deoxyribose

6 / 20

In this experiment bacteria were grown in a growth medium containing N¹⁵. What isN¹⁵?

An isomer of Nitrogen.

An isochrome of Nitrogen

An isotope of Nitrogen

7 / 20

Which enzyme breaks the bonds between complementary base pairs in preparation for DNA replication?

DNA Ligase

DNA Polymerase

DNA Helicase

8 / 20

In a section of double stranded DNA, there were 62 bases. Of these, 20 were A. How many of the bases were C?

22

21

11

9 / 20

Which letter on the above graph is the ' Saturation' point?

A

B

C

10 / 20

The optimum temperature for this enzyme is actually 40^oC. Describe what the line would look like on the above graph.

It would rise at the same rate as 25oC, but the extend beyond, and plateau above it.

It would rise steeper than 25oC at the start , but then plateau above it.

It would rise steeper than 25oC at the start , but then plateau at the same mass.

11 / 20

In this reaction, what is the activation energy for the enzyme catalysed reaction?

300kJ mol^-1

50kJ mol^-1

250kJ mol^-1

12 / 20

Which letter represents the active site in this diagram?

A

B

C

13 / 20

Is the reaction on the above diagram exothermic or endothermic?

Exothermic

Endothermic

14 / 20

True or False : Endothermic enzyme controlled reactions do not require activation energy?

TRUE

FALSE

15 / 20

What do we mean by the 'Primary Structure' of a protein?

The number of amino acids in a single chain

The order of amino acids in a chains

3D shape of the chain

16 / 20

Which best represents the hydrophobic area on this diagram?

1

A

B

17 / 20

On the above diagram, what does structure '1' represent?

A cellulose cell wall

A triglyceride droplet

A phospholipid Bilayer

18 / 20

Name the polymer in the picture.

Amylose

Amylopectin

Cellulose

19 / 20

Is one of the monomers beta glucose ?

Yes

No

20 / 20

Which elements are found in carbohydrates?

Carbon and Hydrogen

Carbon, Hydrogen and Nirtogen

Carbon, Hydrogen and Oxygen

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