1. Cardiac volume = stroke rate x heart rate
B2 Topic 2 Organisms and Energy
This topic looks at:
Respiration – aerobic and anaerobic
Photosynthesis and limiting factors
Organisms and their environments
How is anaerobic respiration different to aerobic respiration?
What is EPOC Exercise Post Oxygen Consumption?
What is the word equation for respiration why do we need to respire?
What is diffusion? Draw a particle diagram to explain what you mean.
EXERCISE
What happens to the heart rate and breathing rate during exercise? Why?
It is possible to jog for five hours why is it not possible to sprint for 5 hours?
Keywords: alveoli, capillaries, oxygen, glucose,
Aerobic respiration
The lungs are full of tiny air sacs called alveoli surrounded by capillaries. Describe how oxygen enters the blood in the lungs and carbon dioxide leaves. There is a diagram to help you.
Cardiac volume = stroke rate x heart rate
What do the following mean?
Cardiac volume =
Stroke rate =
Heart rate =
Keywords: lactic acid, exercise, muscles, energy, cramp

2. B2 Topic 2 Organisms and Energy
This topic looks at:
Respiration – aerobic and anaerobic
Photosynthesis and limiting factors
Organisms and their environments
Label the different parts of a leaf and explain how each is adapted for photosynthesis
What is the word equation for photosynthesis and why do plants do it?
What is diffusion? Draw a particle diagram to explain what you mean.
Keywords, glucose, starch, concentration gradient, sunlight, energy, chloroplasts
Osmosis What is osmosis and why dies it occur. Draw particle diagrams to explain your answers.
If the stomata on a leaf is blocked why will the plant die?
Which part of the plant is responsible for photosynthesis? Draw a cell of this below
Keywords: chlorophyll, stomata, guard cell, waxy cuticle, gas diffusion,

3. B2 Topic 2 Organisms and Energy
This topic looks at:
Respiration – aerobic and anaerobic
Photosynthesis and limiting factors
Organisms and their environments
How does the environment affect organisms living in it?
What are the following objects used for?
What carries
a)Water and salts around the plant?
b) Glucose around the plant?
What is active transport, how is it different to diffusion and osmosis?
Keywords: high concentration, low concentration, concentration gradient, water movement
Osmosis What is osmosis and why dies it occur. Draw particle diagrams to explain your answers.
Transpiration How is water moved around the plants? (Hint keywords; evaporation, diffusion, xylem).
What conditions affect the rate of transpiration and how do they affect it?
Keywords: partially permeable membrane, water molecules, water vapour