Water

Last updated: 17/02/2022

AQA A-Level Biology Water Water

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Question 1 of 24

1. Question
Which is the incorrect description of water?
- Solute
- Metabolite
- Solvent
- Large latent heat of vaporization
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Question 2 of 24

2. Question
Which of the following is correct?
- Water molecules are charged, with the oxygen atom being slightly more negative and hydrogen atoms slightly more positive
- Water molecules are uncharged, with the oxygen atom being slightly more positive and hydrogen atoms slightly more negative
- Water molecules are uncharged, with the oxygen atom being slightly more negative and hydrogen atoms slightly more positive
- Water molecules are charged, with the oxygen atom being slightly more positive and hydrogen atoms slightly more negative
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Question 3 of 24

3. Question
Which of the following is an example of a charged polar molecule that would not dissolve readily in water?
- Lipids
- Salts
- Sugars
- Amino acids
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Question 4 of 24

4. Question
Which of the following is not an example of a hydrophilic molecule?
- Lipids
- Salts
- Sugars
- Amino acids
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Question 5 of 24

5. Question
Which of the following means “water hating”?
- Hydrophobic
- Hydrophilic
- Aqueous
- Hydrolytic
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Question 6 of 24

6. Question
Hydrogen bonds are…?
- Weak
- Strong
- Covalent
- Ionic
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Question 7 of 24

7. Question
Hydrogen molecules can absorb… ?
- A lot of energy
- A little energy
- A little water
- A lot of water
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Question 8 of 24

8. Question
What is the specific heat capacity of water?
- 4.2 J g-1 °C-1
- 4200 J g-1 °C-1
- 5100 J g-1 °C-1
- 5.1 J g-1 °C-1
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Question 9 of 24

9. Question
What property does the unusually high specific heat capacity of water lead to?
- Water does not change temperature easily
- Water changes temperature easily
- Water temperatures fluctuate
- Water temperature is less stable than on land
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Question 10 of 24

10. Question
What is the term used to describe the tendency of water molecules to “stick together”?
- Cohesion
- Adhesion
- Solvent
- Attraction
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Question 11 of 24

11. Question
What property of water leads to a high surface tension?
- Cohesive
- Adhesive
- Attractive
- High specific heat capacity
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Question 12 of 24

12. Question
Why is water a good solvent?
- Polar
- High specific heat capacity
- Low specific capacity
- It's wet
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Question 13 of 24

13. Question
Water molecules are made up of which atoms?
- Two atoms of hydrogen and one of oxygen
- Two atoms of oxygen and one of hydrogen
- Two atoms of helium and one of oxygen
- Two atoms of hydrogen and one of osmium
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Question 14 of 24

14. Question
Why is a water molecule dipolar?
- The oxygen atom has a slight negative charge, while the hydrogen atoms have a slight positive one
- The oxygen atom has a slight positive charge, while the hydrogen atoms have a slight negative one
- One of the hydrogen atoms has a slight positive charge while the other has a slight negative charge
- Water molecules are magnetic
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Question 15 of 24

15. Question
Which word is used to describe how water molecules have both positive and negative poles?
- Dipolar
- Bipolar
- Tripolar
- Magnetic
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Question 16 of 24

16. Question
Which type of bonds link between water molecules?
- Hydrogen bonds
- Covalent bonds
- Ionic bonds
- Ester bonds
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Question 17 of 24

17. Question
Which of the following best describes hydrogen bonds between water molecules?
- Each bond is fairly weak, about one tenth as strong as a covalent bond
- Each bond is very weak, about one thousandth as strong as a covalent bond
- Each bond is quite strong, about one fifth as strong as a covalent bond
- Each bond is as strong as a covalent bond
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Question 18 of 24

18. Question
Which of the following terms best explains the fact that it takes more energy than would otherwise be expected to heat a given mass of water?
- High specific heat capacity
- Low specific heat capacity
- High water potential
- Low water potential
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Question 19 of 24

19. Question
Which of the following terms describes the energy required to evaporate 1g of water?
- Latent heat of vaporisation
- Specific heat capacity
- Water potential
- Kilocalorie
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Question 20 of 24

20. Question
During metabolic reactions, water is used to break down complex molecules through which type of reaction?
- Hydrolysis
- Condensation
- Oxidation
- Reduction
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Question 21 of 24

21. Question
Which of the following is not easily disolved in water?
- Cellulose
- Carbon dioxide
- Cysteine
- Catalase
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Question 22 of 24

22. Question
Evaporation of water allows organisms to…
- Regulate temperature through cooling themselves
- Regulate temperature through warming themselves
- Regulate glucose levels by concentrating bodily fluid levels
- Regulate glucose levels by diluting bodily fluid levels
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Question 23 of 24

23. Question
The fact that water is not easily compressed allows it to provide structural support in which of the following organisms?
- Earthworm
- Human
- Cockroach
- Bacteria
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Question 24 of 24

24. Question
Which of the following is not a property of water that is beneficial to plants?
- Under normal atmospheric pressure, water boils at 373.15 Kelvins
- It is transparent
- It is not easily compressed
- It is a solvent
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