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

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

Stronger

Weaker

3 / 20

Which equation represents the action of ATP Synthase?

A

B

C

D

4 / 20

What does ATP stand for?

Adenosine Triphosphate

Adenine Triphosphate

Adenosine Triose Phosphate

5 / 20

In this experiment bacteria grown in N¹⁵, were then treansfered to N¹⁴, and allowed to divide for two generations ( tubeB). Describe what the cenrifuged DNA bands would look like.

Two bands: one at N¹⁵, and one imbetween N¹⁵ and N¹⁴

Two bands: one at N.N¹⁴, and one at N¹⁵

Two bands: one at N¹⁴, and one imbetween N¹⁵ and N¹⁴

6 / 20

True or False : The enzyme DNA polymerase can only move in one direction along the template strand.

TRUE

FALSE

7 / 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

8 / 20

Will increasing the concentration of substrate cause an increase in the rate of an enzyme inhibited by a non-competitive inhibitor?

Yes

No

9 / 20

Where do non-competitive inhibitors bind?

The Active Site.

Somewhere on the protein other than the active site.

10 / 20

If everything else was kept the same, what effect would adding more enzyme have on the position of the line?

It will be steeper at the start, and plateau above the current line.

It will be steeper at the start, but plateau at the same rate.

No Effect.

11 / 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%

12 / 20

What type of reaction could break apart the bonded amino acids?

Condensation

Hydrolysis

Reduction

13 / 20

On the above diagram, what does structure '3' represent?

A fatty acid chain

A glycerol molecule

A phosphate 'head'

14 / 20

This polysaccharide of glucose is branched. What is the advantage to the organism of branching ?

It fits around organelles easily.

More sites for enzymes it to bind to.

Can form structural support iside cells.

15 / 20

Which two types of polysaccharide form starch?

Amylose and Cellulose

Amylose and Amylopectin

Amylopectin and Cellulose

16 / 20

What type of bond forms amylose?

1-6 Glycosidic bond

1-4 glycosidic bond

1-6 and 1-4 glycosidic bond

17 / 20

Which diagram shows a glycosidic bond - A or B ?

A

B

18 / 20

Molecule D is NOT alpha glucose. What is wrong with it ?

The OH group is in the wrong place on carbon 1

The OH group is in the wrong place on carbon 2

The OH group is in the wrong place on carbon 4

19 / 20

Which molecule is NOT glucose ?

A

B

C

20 / 20

Which elements are found in carbohydrates?

Carbon and Hydrogen

Carbon, Hydrogen and Nirtogen

Carbon, Hydrogen and Oxygen

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