Unit 4 - Bioenergetics

Question 1

word equation for photosynthesis

Answer 1

light
carbon dioxide+ water ->Oxygen + Glucose

Question 2

is photosynthesis exothermic or endothermic

Answer 2

endothermic - it takes in energy from the sun’s light

Question 3

In photosynthesis, e______ is transferred from the e__________- to the c_________ by _____

Answer 3

In photosynthesis energy is transferred from the environment to the chloroplast by light

Question 4

How does temperature affect the rate of photosynthesis?

Answer 4

As the temperature increases, the rate of photosynthesis increases. when the temperature gets too high, the enzymes that control photosynthesis denature and the rate of photosynthesis decreases.

Question 5

how does the rate of photosynthesis affect the biomass of a plant

Answer 5

increase in biomass means increase in photosynthesis which means increase in glucose production which means increase in starch (growth)

Question 6

What are the 5 ways that glucose produced in photosynthesis could be used

Answer 6

-energy
-Converted into soluble starch for storage
- Used to produce fats or lipids for storage
- Used to produce cellulose which strengthens the plant
- Used to produce proteins for synthesis to produce proteins plants also need nitrate ions that are absorbed from the soil

Question 7

How does the amount of chlorophyll in a leaf affect the rate of photosynthesis

Answer 7

the less chlorophyll in a leaf means less photosynthesis

Question 8

is respiration exothermic or endothermic

Answer 8

exothermic

Question 9

where does respiration take place

Answer 9

mitochondria

Question 10

Two types of cell that have lots of mitochondria

Answer 10

• sperm
• Muscle

Question 11

word equation for aerobic respiration

Answer 11

glucose + oxygen -> water + Carbon dioxide

Question 12

symbol equation for glucose

Answer 12

C6H12O6

Question 13

Formula equation for aerobic respiration

Answer 13

C6H12O6 + 6O2 -> 6H2O + 6CO2