Y9 Bioenergetics

Question 1

What is the word equation for photosynthesis?

Answer 1

carbon dioxide + water → oxygen + glucose

Question 2

What is the equation for photosynthesis?

Answer 2

6CO₂ + 6H₂O →
C₆H₁₂O₆ + 6O₂

Question 3

How do plants get nutrients?

Answer 3

Plants get nutrients thorugh roots in the ground, precipitation and from the air

Question 4

What is photosynthesis the process of

Answer 4

Photosynthesis is the process of where plants make their own glucose

Question 5

What chemical in the leaf makes the leaf green?

Answer 5

Chlorophyll

Question 6

Where does photosynthesis take place?

Answer 6

Photosynthesis only happens in the green part of the leaf

Question 7

What are limiting factors of photosynthesis?

Answer 7

-light intensity
-carbon dioxide level
-temperature

Question 8

What is the stomata and what does it do?

Answer 8

The stomata are tiny holes in the underside of leaves. They allow gas exchange- carbons dioxide in, and oxygen+ water vapour out

Question 9

What is the xylem and what does it do?

Answer 9

Xylem are a tube of dead cells, strengthened by lignin.

The xylem transports water and dissolves minerals around the plant

Question 10

What does the phloem do?

Answer 10

The phloem transports food molecules (glucose)

Question 11

Where does aerobic respiration take place?

Answer 11

Aerobic respiration takes place in the mitochondria of cells

Question 12

What is the word equation for aerobic respiration?

Answer 12

Glucose+ Oxygen—>carbon dioxide+ water(+ENERGY)

Question 13

What is the word equation for anaerobic respiration in plants and micro-organisms?

Answer 13

glucose → ethanol + carbon dioxide + energy

Question 14

What is the word equation for anaerobic respiration in animals?

Answer 14

glucose → lactic acid + energy

Question 15

Where does aerobic respiration take place?

Answer 15

Aerobic respiration takes place when oxygen from the lungs reacts with glucose

Question 16

Why does anaerobic respiration happen?

Answer 16

Anaerobic respiration happens as a result of the body not being able to get enough oxygen to the muscles quickly enough to

Question 17

What causes the muscles to ache in anaerobic respiration?

Answer 17

A build up of lactic acid

Question 18

What is anaerobic respiration?

Answer 18

Respiration without oxygen

Question 19

What is aerobic respiration?

Answer 19

Reputation with oxygen

Question 20

What is starch?

Answer 20

Starch is a complex carbohydrate found in plants and animals

Question 21

What are chloroplasts?

Answer 21

Chloroplasts are a cell structure found in green plants that contain chlorophyll

Question 22

What is the definition of oxygen debt

Answer 22

The amount of oxygen that the body needs to break down lactic acid after muscles undergoes anaerobic respiration

Question 23

What is chlorophyll?

Answer 23

Pigment found in plants which are used in photosynthesis(give green plants their colour)

Question 24

What does Endothermic mean?

Answer 24

Chemical reactions which takes in heat

Question 25

What does Exothermic mean?

Answer 25

Chemical reactions where heat is given out

Question 26

What is mitochondria and what does it do

Answer 26

Structures in a cell where respiration takes place

Question 27

What is glucose used for?

Answer 27

-to make proteins for plants which growth and repair -respiration -converted into starch for energy

Question 28

What is respiration?

Answer 28

The process where glucose and oxygen are combined to release energy for cell functions, growth and reproduction