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

Water has a high specific heat capacity, why is this useful to organisms?

It takes a lot of energy to make a little change in temperature, so body temperature is more stable.

It takes a little amount of energy to make a large change in temperature, so body temperature can adapt.

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

2 / 20

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

A full negative charge

A partial Negative charge

A partial positive charge

3 / 20

Which bond is broken when ATP is used?

Between A and A

Between A and B

Between B and C

4 / 20

What type of molecule is part C ?

Nucleotide

Organic Base

Porphyrin Ring

5 / 20

Which of the following is not true of RNA?

It is single stranded.

It contains deoxyribose.

It contains Uracil instead of 'T'.

6 / 20

The two strands in DNA are 'antiparallel'. What does antiparallel mean?

They run in opposite directions.

They run in the same direction.

They run next to each other.

7 / 20

What base does the 'T' stand for?

Thymine

Thiamine

Thyamine

8 / 20

How do you reduce the effect of a competitive inhibitor?

Decrease the amount of substrate.

Increase the amount of substrate.

Reduce the pH.

9 / 20

Will line A ever plateau if the substrate is unlimited?

Yes

No

10 / 20

In this reaction, what percentage difference in energy needed for an enzyme catalysed reaction, compared to an uncatalysed one?

16.6

16.7

83.3%

11 / 20

Enzymes have a very specific shape. What type of bonds hold it in that shape?

Hydrogen Bonds and Di-Sulphide Bridges

Hydrogen and Ionic Bonds

Hydrogen Bonds, Ionic Bonds, and Di-Sulphide Bridges

12 / 20

What is the area of an enzyme called where the substrate binds?

Binding Site

Receptor

Active site

13 / 20

On the above diagram, which letter represents the product?

C

D

E

14 / 20

What is the next reagent to be added after this initial treatment?

Copper Carbonate

Copper Sulphate

Copper Oxide

15 / 20

The sample needs to be treated before adding the regent. How does it need to be treated?

Add a few drops of NaOH to make it alkaline.

Heated in a boiling water bath for 5 minutes.

Add a few drops of HCl to make it acidic.

16 / 20

Which biochemical test is used to identify lipids?

Benedict's Test

The Emulsion Test

Iodine Test

17 / 20

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

A lower melting point.

A higher melting point.

18 / 20

Which two types of polysaccharide form starch?

Amylose and Cellulose

Amylose and Amylopectin

Amylopectin and Cellulose

19 / 20

What are the products of a condensation reaction between two alpha glucose molecules?

Glucose and water

Maltose

Maltose and water

20 / 20

What type of reaction is used to join two monosaccharides?

Hydrolysis

Condensation

Phosphorylation

Your score is

0%

Recent Posts

Categories