cellular respiration

Question 1

which of the processes of cellular respiration takes in oxygen?

Answer 1

electron transport chain

Question 2

where does glycolysis take place?

Answer 2

In the cytosol

Question 3

where does the Krebs cycle take place

Answer 3

in the matrix of mitochondria

Question 4

where does ETC take place

Answer 4

inner membrane of mitochondria (inner folds)

Question 5

what are the reactants for photosynthesis?

Answer 5

carbon dioxide and water

Question 6

what are the products for photosynthesis

Answer 6

glucose and oxygen

Question 7

what is the purpose of photosynthesis?

Answer 7

converts energy from sunlight into kinds of energy that can be stored for later use/chemical energy

Question 8

reactants of cellular respiration

Answer 8

glucose and oxygen

Question 8

what organisms perform cellular respiration

Answer 8

animals,plants,fungi,protists, and most bacteria

Question 9

products of cellular respiration

Answer 9

water and carbon dioxide

Question 10

what is the purpose of cellular respiration

Answer 10

breaks down sugars and other carbs to release the chemical energy and use it to make ATP

Question 11

stages of cellular respiration

Answer 11

glycolysis, Krebs cycle, ETC

Question 12

purpose of glycolysis

Answer 12

breakdown glucose molecules into 2 pyruvate molecules

Question 13

reactants of glycolysis

Answer 13

2 ATP and glucose molecule

Question 14

products of glycolysis

Answer 14

2 NADH, net 2 ATP (4 produced, 2 invested), 2 pyruvate

Question 15

steps of glycolysis

Answer 15

2 ATP added to glucose, Glucose splits into 2 3-carbon molecules,
Enzymes rearrange the 3-carbon molecules into pyruvate, Electrons from the two 3-carbon molecules are transferred to NAD+ forming 2 NADH, More reactions convert the two 3-carbon molecules into 2 pyruvates, making 4 ATP

Question 16

Krebs cycle purpose

Answer 16

Strip molecules of electrons and transfer them to NAD+ and FAD+ to move to the electron transport chain.

Question 17

location of Krebs cycle

Answer 17

mitochondrial matrix

Question 18

reactants of Krebs cycle

Answer 18

reactant- acetyl

Question 19

products of Krebs cycle

Answer 19

products- ATP, NADH, FADH2, Carbon dioxide

Question 20

what happens before Krebs cycle?

Answer 20

before krebs: pyruvate breaks down into acetyl, carbon dioxide is released (1 per pyruvate) and NADH is produced (1 per pyruvate)

Question 21

steps of Krebs cycle

Answer 21

Acetyl bonds with coenzyme A, helping it move into krebs cycle
Once in cycle acetyl drops the coenzyme and is added to a 4-carbon molecule forming a 6-carbon molecule (citric acid)
A series of steps breaks down the citric acid, Strips electrons and transfers them to NAD+ to form NADH, FAD+ to form FADH2, Carbon atoms are lost and used to make CO2 and are released

Question 22

purpose of ETC

Answer 22

Generate a chemiosmotic gradient that is used to synthesize ATP using ATP synthase.

Question 23

reactants of ETC

Answer 23

Reactants- NADH and FADH2,

Question 24

products of ETC

Answer 24

products- ATP, NAD+ FAD, Water

Question 25

steps of ETC

Answer 25

Uses electrons from NADH and FADH2, Electrons are passed from protein to protein. Each transfer of electron releases energy, Energy is used to pump H+ (hydrogen ions) against gradient w/ proton pump across membrane from matrix to intermembrane, H+ flows through ATP synthase enzyme, powering the enzyme which adds phosphate to ADP forming ATP, Oxygen in the matrix is the final electron acceptor in the ETC, picks up an electron at the end of the chain and bonds with hydrogen ions to form water

Question 26

explain how the processes of cellular respiration rely on each other

Answer 26

Glycolysis provides pyruvate for the krebs cycle, which produces NADH and FADH2 for the electron transport chain

Question 27

purpose of fermentation

Answer 27

allows glycolysis to continue making a small amount of ATP without oxygen

Question 28

location of fermentation

Answer 28

cytosol

Question 29

reactants of fermentation

Answer 29

NADH and pyruvate

Question 30

what part of the CR releases CO2?

Answer 30

Krebs cycle, production of acetyl

Question 31

what part of CR takes in O2

Answer 31

ETC

Question 32

what part of CR takes place in mitochondria

Answer 32

production of acetyl, ETC, krebs

Question 33

what part of CR forms ATP

Answer 33

Krebs, ETC, glycolysis

Question 34

what part of CR forms NADH

Answer 34

glycolysis, production of acetyl, krebs

Question 35

what part of CR forms FADH2

Answer 35

Krebs

Question 36

what part of CR forms water

Answer 36

ETC

Question 37

what is the importance of oxygen in ETC

Answer 37

Oxygen is used to pick up electrons at the end of the chain, allowing electrons to continually flow and the gradient that powers ATP synthase to continue to exist.