Revision quiz for B4
B4.1 How do chemical reactions take place in living things?
1. What are all living things made up of?
2. The basic processes of life carried out by all living things depend on chemical
reactions that require energy released by which process?
3. What process is responsible for making food molecules and energy available to living
organisms through food chains?
4. Describe photosynthesis and the type of organisms it occurs in.
5. Describe the process of respiration.
6. What are enzymes made of and what do they do?
7. Cells make enzymes according to the instructions carried in ___________.
8. Explain the lock and key model.
9. Describe how enzymes are affected by temperature. Draw and annotate a graph to
explain the effect.
10. How does pH affect enzyme activity?
Module B4: The processes of life
4.2 How do plants make food?
1. Write the word equation for photosynthesis.
2. Write the symbol equation for photosynthesis.
3. Describe the main stages of photosynthesis:
4. State what may happen to the glucose made.
5. Draw a typical plant cell, label the following parts: chloroplasts, cell membrane,
nucleus,
cytoplasm, mitochondria, vacuole and cell wall.
6. Explain the function of the structures in a typical plant cell that have a role in
photosynthesis, including:
a. chloroplasts
b. cell membrane
c. nucleus
d. cytoplasm.
7. What do plants use the minerals for that are taken up by plant roots.
8. Define diffusion.
9. The movement of oxygen and carbon dioxide in and out of leaves during
photosynthesis occurs by ………………..
10. Define osmosis.
11. Where in a plant does osmosis occur?
12. Describe active transport and where in a plant it is used in the absorption of
nitrates.
13. Draw graphs to explain how the rate of photosynthesis is limited by :
a. temperature
b. carbon dioxide
c. light intensity.
14.Describe and explain a technique used in fieldwork to investigate the effect of light
on plants,
including:
a. using a light meter
b. using a quadrat
c. using an identification key.
15. Describe what a transect is and how you use one.
Module B4: The f life
B4.3 How do living organisms obtain energy?
1. List the processes in cells that require energy from respiration.
2. Which large molecules (polymers) do plant cells synthesis from glucose?
3. What chemicals are amino acids synthesised from?
4. What are amino acids made into?
5. State the word equation for respiration.
6. Write a symbol equation for respiration.
7. What does aerobic respiration require?
8. Anaerobic respiration takes place in animal, plant and some microbial cells in
conditions of low oxygen or absence of oxygen, list 3 examples of where anaerobic
respiration will occur.
9. Sate the word equation for anaerobic respiration in animal cells and some
bacteria.
10. State the word equation for anaerobic respiration in plant cells and some
microorganisms.
11. Which type of respiration releases more energy per glucose molecule?
12. Draw a typical animal and microbial cell (bacteria and yeast) and label the
following parts:
a. nucleus
b. cytoplasm
c. cell membrane
d. mitochondria (for animal and yeast cells)
e. cell wall (for yeast and bacterial cells)
f. circular DNA molecule (for bacterial cells).
13. State the functions of the structures in animal, plant, bacteria and yeast cells that
have a role in respiration, including: mitochondria, cell membrane, nucleus or
circular DNA and cytoplasm.
14. Describe examples of the applications of the anaerobic respiration of
microorganisms.