U1T9 – ATP, Water and Inorganic Ions

ATP, Water and Inorganic Ions

1 / 20

What does ATP stand for?

Adenosine Triphosphate

Adenine Triphosphate

Adenosine Triose Phosphate

2 / 20

What is the name of molecule B?

Ribulose

Ribose

Deoxyribose

3 / 20

What type of molecule is part C ?

Nucleotide

Organic Base

Porphyrin Ring

4 / 20

Which process requires the use of ATP?

Facilitated Diffusion

Osmosis

Active Transport

5 / 20

The average human makes and breaks-down its own body mass in ATP every day ( approximately 70 kg). Why is this?

ATP cannot be stored.

ATP is excreted in urine.

ATP is hard to break down.

6 / 20

What type of reaction is involved in the breakdown of ATP?

Condensation

Hydrolysis

7 / 20

Which bond is broken when ATP is used?

Between A and A

Between A and B

Between B and C

8 / 20

Name the enzyme involved in the breakdown of ATP

ATP Synthase

ATP Phosphorylase

ATP Hydrolase

9 / 20

ATP can be used to add a phosphate group onto molecules. What is this process known as?

Phosphation

Phosphorising

Phosphorylation

10 / 20

Which equation represents the action of ATP Synthase?

A

B

C

D

11 / 20

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

A full negative charge

A partial Negative charge

A partial positive charge

12 / 20

What word best describes this molecule?

Ionic

Polar

Neutral

13 / 20

What type of bond forms between water molecules?

Hydrogen

Ionic

Hydroxide

14 / 20

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

Stronger

Weaker

15 / 20

Many important substances in biological systems are ionic. What property of water allows these substances to dissolve and make water a good solvent?

Cohesion between molecules

A High latent heat of vaporisation

Polar Molecules

16 / 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

17 / 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.

18 / 20

An ion with a negative charge is called an anion. Which of the following is NOT an anion?

chloride

calcium

phosphate

19 / 20

Which of the following molecules contain a phosphate group?

Amino Acids, Nucleotides and ATP

Amino Acids and ATP

Nucleotides and ATP

20 / 20

Hydrogen ionconcentration is used to calculate pH. Which of the following statements is true?

Acidic solutions have a high concentration of hydrogen ions.

Acidic solutions have a low concentration of hydrogen ions.

Basic solutions have a high concentration of hydrogen ions.

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