PHGY 230 Ch 27 & 3 Homework Exam With
Complete Solutions
Which of the following is a product of glycolysis? - ANSWER pyruvate
Which of the following molecules is produced, along with the oxidation of NADH, when
oxygen levels are limited? - ANSWER lactate
What is the molecule that enters the citric acid cycle? - ANSWER Acetyl co-A
How many ATP are produced using the energy from each NADH? - ANSWER 3
The net result of a single glycolysis run is the formation of - ANSWER 2 NADH and 2 ATP
Under anaerobic conditions, the end-product of glycolysis is converted to - ANSWER
lactic acid
Cells obtain energy by ________ food molecules such as glucose. - ANSWER oxidizing
Which of the following best describes the reduction of the coenzyme NAD+? - ANSWER
NADH(+) + H(-) -> NADH
A hydrogen atom consists of - ANSWER a proton and an electron
Whenever a molecule is oxidized, another molecule must be reduced. T/F - ANSWER
true
NADH serves as an electron carrier that can donate its hydrogen to other molecules. T/F
, - ANSWER true
Glycolysis does not require oxygen. T/F - ANSWER true
What is the net number of ATP molecules that can be produced from the oxidation of a
glucose molecule under anaerobic conditions? - ANSWER 2
Select all that correctly indicate the importance of NADH and FADH2 in aerobic cellular
respiration. - ANSWER -Their potential energy is converted to kinetic energy in the
electron transport chain.
-Their oxidation will result in NAD+ and FAD.
-They will donate high energy electrons to the electron transport chain.
Select all the stages of cellular respiration. - ANSWER - glycolysis
- Citric acid cycle
- electron transport system
The final electron acceptor in the electron transport chain is ___________. - ANSWER
oxygen
Label the cellular respiration overview figure using the terms provided. - ANSWER
Classify the information given with the correct stage of cellular respiration. - ANSWER
Fill in the blanks with the terms provided. Not all terms will be used. - ANSWER The
process of glucose oxidation can be separated into four stages. The first stage, called
____________, occurs in the ___________ and is the only stage that can occur without
___________. The second stage, or the ________________, is the "link" to the third stage.
This third stage, called the ______________, is a circular metabolic pathway that takes
place in the mitochondria. The final stage is the _______________. It also occurs in the
mitochondria and is involved in the transfer of energy from ________. The last three
Complete Solutions
Which of the following is a product of glycolysis? - ANSWER pyruvate
Which of the following molecules is produced, along with the oxidation of NADH, when
oxygen levels are limited? - ANSWER lactate
What is the molecule that enters the citric acid cycle? - ANSWER Acetyl co-A
How many ATP are produced using the energy from each NADH? - ANSWER 3
The net result of a single glycolysis run is the formation of - ANSWER 2 NADH and 2 ATP
Under anaerobic conditions, the end-product of glycolysis is converted to - ANSWER
lactic acid
Cells obtain energy by ________ food molecules such as glucose. - ANSWER oxidizing
Which of the following best describes the reduction of the coenzyme NAD+? - ANSWER
NADH(+) + H(-) -> NADH
A hydrogen atom consists of - ANSWER a proton and an electron
Whenever a molecule is oxidized, another molecule must be reduced. T/F - ANSWER
true
NADH serves as an electron carrier that can donate its hydrogen to other molecules. T/F
, - ANSWER true
Glycolysis does not require oxygen. T/F - ANSWER true
What is the net number of ATP molecules that can be produced from the oxidation of a
glucose molecule under anaerobic conditions? - ANSWER 2
Select all that correctly indicate the importance of NADH and FADH2 in aerobic cellular
respiration. - ANSWER -Their potential energy is converted to kinetic energy in the
electron transport chain.
-Their oxidation will result in NAD+ and FAD.
-They will donate high energy electrons to the electron transport chain.
Select all the stages of cellular respiration. - ANSWER - glycolysis
- Citric acid cycle
- electron transport system
The final electron acceptor in the electron transport chain is ___________. - ANSWER
oxygen
Label the cellular respiration overview figure using the terms provided. - ANSWER
Classify the information given with the correct stage of cellular respiration. - ANSWER
Fill in the blanks with the terms provided. Not all terms will be used. - ANSWER The
process of glucose oxidation can be separated into four stages. The first stage, called
____________, occurs in the ___________ and is the only stage that can occur without
___________. The second stage, or the ________________, is the "link" to the third stage.
This third stage, called the ______________, is a circular metabolic pathway that takes
place in the mitochondria. The final stage is the _______________. It also occurs in the
mitochondria and is involved in the transfer of energy from ________. The last three
