B9

Question 1

equation for respiration

Answer 1

C6H12 + 6O2 > 6CO2 + 6H2O

Question 2

exothermic definition

Answer 2

a reaction that releases energy into its surroundings

Question 3

respiration definition

Answer 3

chemical process of burning oxygen and glucose to make energy, occurs in every cell in the mitochondria

Question 4

breathing definition

Answer 4

a mechanical process in the lungs, which allows us to inhale and exhale

Question 5

mitochondria definition

Answer 5

organelles found in cells

Question 6

where does glucose for respiration come from?

Answer 6

food, digestion, into small intestine

Question 7

where does oxygen for respiration come from?

Answer 7

oxygen in air, into lungs, into alveoli, into bloodstream

Question 8

how do we get rid of water and carbon dioxide from respiration?

Answer 8

alveoli, lungs, exhaled, kidneys, excretory system

Question 9

what is energy from respiration used for?

Answer 9

in animals, used to make muscles contract

Question 10

why do plant cells need a lot of mitochondria?

Answer 10

require a lot of energy to perform photosynthesis and cell respiration

Question 11

why should you eat carbohydrates after exercising?

Answer 11

help to maintain blood sugar levels and replenish the muscle’s glycogen

Question 12

aerobic respiration

Answer 12

exothermic reaction, in which glucose is broken down by oxygen to produce CO2 and water, and release energy from the cells

Question 13

anaerobic respiration

Answer 13

exothermic reaction, in which glucose is broken down WITHOUT oxygen to produce lactic acid. a small amount of energy is transferred to the cells

Question 14

how does pulse rate differ in people of different levels of fitness?

Answer 14

an unfit person will have a higher resting heart rate than a fit person

Question 15

what is glycogen

Answer 15

carbohydrate, stored form of glucose in muscles

Question 16

why is glycogen converted back to glucose

Answer 16

to be used as fuel for the cells

Question 17

oxygen debt definition

Answer 17

the extra oxygen that must be taken into the body after exercise has stopped, to complete the aerobic respiration of lactic acid

Question 18

lactic acid definition

Answer 18

acid produced in muscle tissues during strenuous exercise

Question 19

metabolism definition

Answer 19

the sun of all the reactions that happen in a cell or the body

Question 20

how can alcohol damage the liver

Answer 20

alcohol alters the chemicals that break down and remove scar tissue, causing scar tissue to build up in the liver, preventing it from functioning properly

Question 21

hepatic vein function

Answer 21

carries blood from the liver to the heart with levels of food adjusted

Question 22

hepatic portal vein function

Answer 22

carries the blood, containing digested food, from the intestines to the liver

Question 23

hepatic artery function

Answer 23

brings oxygenated blood to the liver

Question 24

how is lactic acid transported to the liver

Answer 24

taken from the muscle tissue to the liver, carried by the blood

Question 25

what does liver first convert lactic acid into

Answer 25

converted to glucose

Question 26

what does the liver secondly convert lactic acid into

Answer 26

glucose is converted to glycogen through the process of glycogenesis

Question 27

what does the liver do with unneeded glucose

Answer 27

converted to glycogen for storage