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Flashcards in Cellular Respiration Deck (69)
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1

Which processes of cellular respiration produce CO2?

The Krebs cycle (citric acid cycle)

2

What all is produced in glycolysis

2 pyruvate
4 ATP but a net gain of 2
2 NADH

3

Where does glycolysis occur?

Cytoplasm

4

What is an example of a catabolic pathway?
Why?

Cellular respiration

It breaks down a glucose molecule into ATP, water, and CO2

5

What is an example of a anabolic pathway?

Photosynthesis

6

What does oxidation gain and lose?

Lose: electrons
Hydrogen

Gain: Oxygen

Results in many C-O bonds and a compound with lower potential energy

7

What does a molecule undergoing reduction lose or gain?

Lose: Oxygen

Gain: electrons
Hydrogen

Results in many C-H bonds
Results in a compound with higher potential energy

8

What is the balanced chemical equation for cellular respiration?

C6H12O6 + 6O2 =


6CO2 + 6H2O + ATP

9

Does reduction and oxidation always occur together?

Yes.

One compounds loss is another compounds gain.

10

Define redox, and how it plays a key role in the flow of energy through living systems.

Redox is the exchange of electrons from molecule to molecule

The reduced firm of a molecule has a high potential energy since electrons that are flowing from one molecule to the next are carrying energy with them

11

What are the three steps in cellular respiration?

Glycolysis
The Krebs cycle
Oxidative phosphorylation (electron transport chain)

12

What are three aspects of cellular respiration

Glycolysis
Anaerobic respiration
Aerobic respiration

13

If no oxygen is available in glycolysis, what happens to the pyruvate?

It enters into anaerobic respiration

14

What are the products of anaerobic respiration?

Lactate (lactic acid) or ethanol
And carbon dioxide

(No further production of ATP)

15

If oxygen is present, what kind of respiration does the cell enter?

Aerobic

16

What is the purpose of glycolysis?

Sugar splitting (split a hexose in half)

17

Does glycolysis occur in both eukaryotic and prokaryotic cells?

Yas betch Yas

18

Does the sugar splitting occur in aerobic and anaerobic environments?

Yas

19

Does glycolysis use oxygen? And does is require any organelles?

No to both

20

What happens in the first stage of glycolysis

Two ATP molecules phosphorylate the glucose to turn it into fructose -1, 6-biphosphate

21

What happens after the glucose is phosphorylated into fructose?
What is this process called?

The molecule splits into two 3- carbon sugars.
(A.K.A lysis)

22

What happens in the third step of glycolysis?

The G3P undergoes oxidation to form a reduced molecule of NAD+ (WHICH IS NADH)

23

While NADH is being reduced in glycolysis, what else is happening simultaneously?

Released energy is used to add an inorganic phosphate to the remaining 3- carbon compound.

24

In the last step of glycolysis, what happens after a phosphate is added to the other end of the 3 carbon compound?

This results in a compound with two phosphate groups.

Enzymes then remove the phosphate groups so they can be added to ADP to produce ATP

25

After the phosphate have been removed from the 3 carbon molecules in glycolysis, what remains?

2 pyruvate

26

Summarize glycolysis. 3 steps. The last is the most important with the most going on. If you can't do this, go back

Phosphorylation
Lysis
Oxidation

27

Is glycolysis magic?

No. It happens by a series of enzymes every step of the way

28

Where does aerobic respiration mostly occur?

In the mitochondria

29

What is the link reaction

Making acetyl CoA

30

How does the pyruvate enter the matrix of the mitochondria?

Active transport (pushed inside using energy? ~ ask Wilson)