Cell Respiration-Bio Exam 3

Cellular respiration is a

exergonic process

Cellular respiration oxidizes glucose to produce

energy(ATP)

Write the equation for respiration

C6H12O6 + 6O2 à 6CO2 + 6H2O + energy(ATP)

Photosynthesis & respiration form a _______. The products of one process are the _______ of the other process.

cycle; reactants

Respiration occurs in ______ living things

all

In which two organelles do the processes of respiration occur?

Cytoplasm & mitochondria

If the reaction occurs in the cytoplasm, it is _________. If the reaction occurs in the mitochondria, it is _______.

anaerobic; aerobic

The aerobic pathway requires _______. List the 2 reactions that are aerobic

oxygen; Krebs cycle & electron transportchain

The anaerobic pathway does not require _______. List the 2 reactions that are anaerobic

oxygen; Fermentation &glycolysis

Glycolysis occurs in the cytoplasm & is

anaerobic

Kreb's cycle occurs in the mitochondria & is

aerobic

Electron Transport Chain occurs in the ______ and is _______

mitochondria; aerobic

What does glycolysis mean?

Sugar breaking

In glycolysis, one glucose molecule is broken up into __ pyruvate molecules. How many carbons does eachpyruvate have?

2; 3

How many ATP does it take to start this reaction?

2

In glycolysis, two _____ & four _____ are also made

NADH; ATP

What is the net number of ATP made in glycolysis?

2

What are the reactants of glycolysis?

1 glucose & 2 ATP

What are the products of glycolysis?

2 NADH, 2 pyruvate, 4 ATP

In the intermediate step, one carbon is pulled off of each ______. The remaining molecule is called _______.

pyruvate; acetyl CoA

The carbon pulled off of pyruvate is added to oxygen forming

carbon dioxide

What is the total number of carbon dioxide molecules produced in the intermediate step?

2

What are the reactants of the intermediate step?

Pyruvate & oxygen

What are the products of the intermediate step?

2 Acetyl CoA, 2 carbon dioxide, 2 NADH

f a cell has plenty of sugar & ATP, what happens to the acetyl CoA?

It is used to produced fat & is stored

f the cell does not have plenty of sugar, what happens to fat & proteins?

It is turned into Acetyl CoA & usedto produce energy

How many times does the intermediate step occur?

2

What is another term for the Kreb's cycle?

Citric acid cycle

What are the reactants of the Kreb's cycle?

Acetyl Co A & oxygen

What are the products of the Kreb's cycle?

3 NADH, 1 FADH2, 1ATP, 2CO2

How many times will the Kreb's cycle occur?

twice

List the TOTAL numbers for the products of the Kreb's cycle.

6 NADH, 2 FADH2, 2 ATP, 4 CO2

List the reactants of the ETC

10 NADH & 2 FADH2

List the products of the ETC.

32 ATP & water

How many NADH enter the ETC?

10

How many FADH2 enter the ETC

2

What is the total number of ATP made in respiration?

36

What are the two reasons that organisms undergo anaerobic respiration?

It is there normal way of makingtheir energy OR there is low oxygen

List the 2 reactions/stages of anaerobic respiration

Glycolysis & Fermentation

Glycolysis & Fermentation occur in the _____ and are ______

cytoplasm; anaerobic

List the 2 types of fermentation.

Lactic Acid & Alcoholic

What types of organisms undergo alcoholic fermentation?

Bacteria & fungi(yeast)

What are the reactants for alcoholic fermentation?

pyruvate

What are the products for alcoholic fermentation?

Ethyl alcohol & CO2

List examples of commercial products produced by the process of alcoholic fermentation

Yeast bread/alcoholic beverages (beer, wine, etc.)

What types of organisms undergo Lactic Acid fermentation as their normal respiration process?

bacteria

What types of organisms undergo Lactic Acid fermentation under low oxygen environments?

mammals

What type of cells in mammals undergoes lactic acid fermentation?

Muscles

Lactic acid fermentation produces ___________ in mammals. This occurs due to heavy _____ producing low oxygen.

sore muscles & fatigue; exercise

What are the reactants of lactic acid fermentation?

pyruvate

What are the products of the lactic acid fermentation?

Lactic acid

List examples of commercial products produced by the process of lactic acid fermentation

Buttermilk/yogurt/sour cream