Semester 2 Quiz 3

When glycolysis occurs,

(all of the above) some ATP is produced, two molecules of pyruvate are made, a molecule of glucose is split

Which of the following is best shown by Figure 4.2 below? (see 4.2 on quiz #3. )

. electron transport chain

What is the net gain of ATP molecules in glycolysis?

2

Two products of the Krebs cycle are

ATP and CO2

When cells break down food molecules, energy

is temporarily stored in ATP molecules.

Which phrase about fermentation is correct?

takes place without oxygen

Water is an end product in

the electron transport chain in aerobic respiration

What is the function of oxygen in cellular respiration?

to pick up electrons and H+ at the end of the electron transport chain

Which of the following statements best describes cellular respiration?

Carbon-based molecules from food and oxygen are used to make ATP

Which of the following is NOT formed during the Krebs cycle?

NADPH

Which of the following is the best explanation for the presence of both chloroplasts and mitochondria in plant cells?

Sugars are produced in chloroplasts. These sugars can be stored in the plant for later use, converted to other chemicals, or broken down in aerobic respiration to yield ATP for the plant to use to meet its energy needs.

When glycolysis occurs,

a molecule of glucose is split.

In the electron transport chain, energy from the Krebs cycle is used to pump hydrogen ions

across the inner mitochondrial membrane

Which phrase best describes the main role of fermentation?

allows glycolysis to continue making a small amount of ATP

Which end product of alcoholic fermentation is important in the baking industry?

carbon dioxide

Which of the following is a product of the Krebs cycle?

carbon dioxide

The correct sequence of the processes listed below is: ( put in sequence the following : I. Glycolysis, II. Electron Transport Chain, III. Krebs cycle, and IV. Citric Acid Cycle (the answer uses only three of them )

d. I....III....II

Respiration involves a variety of carbon containing molecules. Which of the molecules are correctly paired with their number of carbon?

e. glucose (6) , pyretic acid (3) , acetyl CoA (2) , carbon dioxide (1)

Aerobic respiration is a _______ and _______ process

exergonic, catabolic

The part of cellular respiration in which glucose is broken down is called

glycolysis

Which end product of fermentation causes the burning feeling in muscles that are working hard?

lactic acid

The part of cellular respiration that needs oxygen takes place inside the

mitochondria

Cells produce ATP most efficiently in the presence of

oxygen

Which of the following are end products of glycolysis?

pyruvate, NADH, and ATP

Which organisms use alcoholic fermentation to allow glycolysis to continue to produce ATP?

yeasts