respiration

Question 1

word equation for aerobic respiration

Answer 1

glucose + oxygen –> carbon dioxide + water

Question 2

balanced symbol equation for aerobic respiration

Answer 2

C6H1206 + 6O2 —> 6C02 + 6H20

Question 3

what is anaerobic respiration

Answer 3

cells respiring without oxygen

Question 4

word equation for anaerobic respiration in plants and fungi

Answer 4

glucose —> ethanol + carbon dioxide

Question 5

word equation for anaerobic respiration in animals

Answer 5

glucose —> lactic acid

Question 6

what is oxygen debt

Answer 6

the volume of oxygen needed to oxidise the lactic acid

Question 7

thorax

Answer 7

upper part of the body

Question 8

trachea

Answer 8

wind pipe that air passes through, surrounded by rings of cartilage to keep it open

Question 9

bronchi

Answer 9

tubes that split from the trachea into the lungs

Question 10

bronchioles

Answer 10

smaller tubes that carry air deep into the lungs

Question 11

alveoli

Answer 11

site of gas exchange

Question 12

ribs

Answer 12

protect the organs in the thorax

Question 13

intercostal muscles

Answer 13

contract and relax during ventilation

Question 14

diaphragm

Answer 14

domed sheet of muscle that is important in moving air in and out of the lungs

Question 15

describe the process of inhalation

Answer 15

• diaphragm contracts moving down and flattens
• intercostal muscles contract, moving ribs up and out
• volume increases
• pressure decreases
• air moves in

Question 16

describe the process of exhalation

Answer 16

• diaphragm relaxes moving up and doming
• intercostal muscles relax, moving ribs down and in
• volume decreases
• pressure increases
• air moves out

Question 17

how are alveoli adapted for gas exchange

Answer 17

• large SA
• lots of capillaries, high concentration gradient
• one cell thick