Cellular Respiration Chapter 6.1

Question 1

ATP

Answer 1

Adenosine triphosphate–ALL CELLS Require ATP

Question 2

Why is ATP essential

Answer 2

Because it powers nearly all activity that requires energy input in the cell

Question 3

ATP and food

Answer 3

The constant need for ATP explains the constant need for a steady supply of food: All organisms use the potential energy stored in food to make ATP

Question 4

Where does the food come from

Answer 4

Plants and other autotrophs use P/S to make organic molecules such as Glucose out of Carbon Dioxide and Water. Light supplies the energy. The glucose produced in P/S feeds not autotrophs but all organism in a ecosystem

Question 5

The categories of pathways that generate ATP from food

Answer 5

1. Aerobic Cellular Respiration
2. Anaerobic Respiration
3. Fermentation

Question 6

What is Aerobic Cellular Respiration

Answer 6

a cell uses oxygen gas (O2 ) and glucose to generate ATP

Question 7

What organisms use Aerobic Cellular Respiration

Answer 7

Plants animals, and many microbes

Question 8

Anaerobic Respiration and Fermentation

Answer 8

Are pathways that generate ATP from glucose Without the presence of O2

Question 9

Anaerobic Respiration and Fermentation are used by

Answer 9

Mostly by micro-organisms

Question 10

The equation for Aerobic Cellular Respiration

Answer 10

Is the Opposite of Photosynthesis
Glucose + Oxygen——> Carbon Dioxide + Water + ATP
C6 H12 O6 +6O2——–> 6CO2 + 6H2O + 36ATP

Question 11

What does Aerobic Cellular Respiration equation reveal

Answer 11

that Aerobic Cellular Respiration requires organisms to acquire O2 and get rid of CO2 (in order to break down glucose into ATP)

Question 12

how are O2 and CO2 exchanged into and out of cells

Answer 12

Single celled organisms: simple diffusion across membranes

Complex organisms: require organs of bass exchange ( lungs or gills)

Question 13

Explain gas exchange in humans

Answer 13

1. o2 is inhaled
2. air is diffused into the blood stream across the walls of microscopic air sacs in lungs.
3. The circulatory system carried inhaled O2 to cells( where car exchange occurs
4. O2 diffuses into the cell’s mitochondria ( the site of respiration)

5.

Question 14

The site of gas exchange

Answer 14

The cells

Question 15

The organelle for Aerobic Cellular Respiration

Answer 15

The mitochondria

Question 16

Do Plants use Aerobic Cellular Respiration

Answer 16

Yes, 1. Plants use oxygen to respire about half of the glucose they produce.

2. They absorb much more CO2 in Photosynthesis than they release in respiration.
3. They release much more oxygen than they consume.