Chapter 9.1

Question 1

Where do organisms get their energy?

Answer 1

Organisms get the energy they need from food

Question 2

What is cellular respiration?

Answer 2

the process that releases energy from food in the presence of oxygen. (accomplished by mitochondria)

Question 3

What is the relationship between photosynthesis and cellular respiration?

Answer 3

Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.

Question 4

What is a calorie?

Answer 4

is an amount of energy needed to raise 1 gram of water 1 degrees Celsius. Food labels that say Calorie (capital C) are actually in kilocalories which are equal to 1000 calories.

Question 5

What is aerobic respiration?

Answer 5

pathways of cellular respiration that require oxygen. The krebs cycle and electron transport both require oxygen (so are aerobic processes)

Question 6

What is anaerobic respiration?

Answer 6

pathways of cellular respiration that do not require oxygen. Glycolysis does not directly require oxygen (so is anaerobic processes)

Question 7

What is the chemical equation of cellular respiration and photosynthesis?

Answer 7