Ch 10 Respiration & Photosynthesis

Question 1

What are biochemical process + examples

Answer 1

A biochemical process is a chemical reaction (or a series of chemical reactions) that takes place in a living thing.

Eg photosynthesis and respiration

Question 2

What is respiration

Answer 2

Release of energy from food

Question 3

What is anaerobic and aerobic respiration

Answer 3

Aerobic: needs oxygen
Anaerobic: doesn’t use oxygen

Question 4

Anaerobic respiration word equation

Answer 4

glucose + oxygen —————> carbon dioxide + water + energy

Question 5

What is needed for anaerobic respiration to take place

Answer 5

cells need a supply of glucose and oxygen. In humans:
• Glucose is carried by blood plasma from the small intestine to all the cells of the body
• Oxygen is carried by haemoglobin in red blood cells from the lungs to all the cells of the body.

Question 6

Factors of respiration

Answer 6

Temperature, oxygen, water

Question 7

What are the products of respiration

Answer 7

Energy, CO2, water(vapour)

Question 8

What is photosynthesis

Answer 8

Plants use solar energy to make food in a process called photosynthesis.

Question 9

What is photosynthesis

Answer 9

Plants use solar energy to make food in a process called photosynthesis.

Question 10

What is the word equation for photosynthesis

Answer 10

Light
carbon dioxide + water→ → → → →glucose + oxygen
Chlorophyll

Question 11

Factors of photosynthesis

Answer 11

Light, carbon dioxide, water, chlorophyll, temperature

Question 12

Other factors of photosynthesis

Answer 12

The surface area of the leaves
The number of leaves
The distribution of leaves (i.e. whether they are blocking light from each other)
The number of tiny openings (called stomata) on the leaves.