Bio 1010 quiz 4 multiple choice questions

 

 

 

 

Quiz 4 – Pathways of cellular respiration

 

What material(s) are put into the Krebs Cycle?

 

FADH2

 

NADH

 

ATP

 

carbon dioxide

 

acetyl groups

 

 

 

The order of the major pathways and reactions of cellular respiration is

 

glycolysis-electron transport chain-preparatory reaction-Krebs cycle.

 

Krebs cycle-glycolysis-preparatory reaction-electron transport chain.

 

glycolysis-preparatory reaction-Krebs cycle electron transport chain.

 

electron transport chain-glycolysis-preparatory reaction-Krebs cycle.

 

glycolysis-preparatory reaction-Krebs cycle-electron transport chain.

 

 

 

What would be the immediate result if the hydrogen ion concentration in the intermembrane space and the matrix reached equilibrium?

 

The conversion of FAD to FADH2 would stop.

 

Most ATP production would stop.

 

Glycolysis and the Krebs cycle would stop.

 

Most ATP production would increase.

 

The conversion of NAD+ to NADH would stop.

 

 

 

What role does oxygen play in cellular respiration?

 

It acts as an input for the Krebs cycle.

 

It acts as a coenzyme in the electron transport chain.

 

It acts as an intermediate between glycolysis and the Krebs cycle.

 

It acts as an input for glycolysis.

 

It acts as the final electron acceptor in the electron transport chain

 

 

 

Which part of cellular respiration produces the greatest amount of ATP?

 

Krebs cycle

 

electron transport chain

 

preparatory reaction

 

fermentation

 

glycolysis

 

 

 

Which of the following phases takes place entirely outside the mitochondria and is considered to be anaerobic?

 

Krebs cycle

 

preparatory reaction

 

electron transport chain

 

chemiosmosis

 

glycolysis

 

 

 

In which of the following events of cellular respiration is no ATP produced?

 

chemiosmosis

 

preparatory reaction

 

electron transport chain

 

Krebs cycle

 

Glycolysis

 

 

 

When an enzyme is used to convert ADP into ATP it is referred to as

 

enzyme ATP synthesis.

 

active site ATP synthesis.

 

substrate-level ATP synthesis.

 

enzyme ADP synthesis.

 

substrate-level ADP synthesis.

 

 

 

One molecule has gone through glycolysis and the preparatory reaction. The net number of ATP molecules produced so far is

 

one.

 

two.

 

zero.

 

six.

 

36 or 38.

 

 

 

The best fat burning exercise would be

 

short and aerobic.

 

watching television.

 

long and anaerobic.

 

short and anaerobic.

 

long and aerobic.

 

 

 

Once NADH and FADH2 have delivered their electrons and hydrogen ions to the electron transport chain, they

 

pick up more hydrogen ions.

 

pick up water molecules.

 

pick up oxygen molecules.

 

are shipped out of the mitochondria to be used by other organelles.

 

pick up carbon dioxide molecules.

 

 

 

Of the following statements, which is true in common for proteins, carbohydrates, and lipids as they are catabolized?

 

They all produce the same amount of energy.

 

They all undergo the electron transport chain.

 

They all undergo the preparatory reaction.

 

They all undergo glycolysis.

 

They all need carbon dioxide to be broken down.

 

 

 

Which of the following statements is true about fermentation?

 

It occurs without oxygen.

 

It is very efficient.

 

It produces more ATP then cellular respiration with oxygen.

 

It produces pyruvate as its end product.

 

It doesn’t need enzymes.

 

What is the significance of the cristae in the mitochondria?

 

increase surface area, therefore increasing the Krebs cycle

 

increase surface area, therefore increasing the preparatory reaction

 

increase surface area, therefore increasing fermentation

 

increase surface area, therefore increasing the electron transport chain

 

increase surface area, therefore increasing glycolysis

 

 

 

What role do NADH and FADH2 play in the process of cellular respiration?

 

They carry electrons to the electron transport chain.

 

They oxidize pyruvate.

 

They assist in making acetyl groups.

 

They produce ATP.

 

They help break down glucose.

 

 

 

Which of the following is a product of a part of metabolism other than the electron transport chain in cellular respiration?

 

water

 

oxygen

 

FAD

 

NAD+

 

ATP

 

 

 

Which of these is an inaccurate description of the preparatory reaction?

 

The reaction occurs once per glucose molecule.

 

NAD+ is converted to NADH.

 

Carbon dioxide is given off.

 

It connects glycolysis to the Krebs cycle.

 

Pyruvate is converted to a two-carbon acetyl group.