Module 4 Tough Quiz Questions Flashcards
Which of the following statements regarding the oxidation of pyruvate is false
Each pyruvate has a CO2 added and joins with an NADH
Enzymes only work with one substrate
True
bacterial production of the enzymes needed for the synthesis of the amino acid tryptophan declines with increasing levels of tryptophan and increases as tryptophan levels decline this is an example of
Feedback inhibition
As electrons move through the mitochondrial space
The pH of the intermembrane space changes
Which of the following statements regarding the movement of electrons during cellular respiration is true
Oxygen is produced when it accepts electrons and forms water
In the electron transport chain the final electron acceptor is
Oxygen
The enzyme catalase acts on the substrate
Hydrogen peroxide
The citric acid cycle occurs in the
Mitochondrial Matrix
Which of the following metabolic pathways is common in aerobic and anaerobic metabolism
Glycolysis
Which of the following is a result of glycolysis
The conversion of glucose to two three carbon compounds that are pyruvate
Where does the oxidation of pyruvate happen
In the mitochondrial Matrix
Which of the following substances increases in abundance during cellular respiration
ATP
arsenic is a poison that binds to a molecule needed to build acetyl coenzyme a based on this information which part of cellular respiration would be stopped if arsenic were ingested
The citric acid cycle
How do cells capture the energy released by cellular respiration
They produce ATP
A storage form of carbohydrates is
Glycogen
Oxidative phosphorylation happens in
The inner membrane of the mitochondria
At the end of the citric acid cycle most of the energy is stored in
Nadh
Nadh pills can be purchased over the counter ender often taken by sufferers of chronic fatigue syndrome. What is the hypothesis about how these pills my benefit a CFS patient.
They would increase the number of electrons provided to the electron transport chain
a child is born with a rare disease in which mitochondria are missing from skeletal muscle cells however the muscle still function physicians find that
Muscles contain large amounts of lactate following even mild physical exercise
An active site of an enzyme is
The part of enzymes that combine with substrates
Which of the following is an example of catabolism
The breakdown of glucose in the cytoplasm in mitochondria
To obtain energy from starch and glycogen the body must begin by
Hydrolyzing both starch and glycogen to glucose
wood frogs freeze solid during the winter and thawing spring as the freezing progresses blood circulation stops how would you expect cells not being served by the circulatory system to produce ATP during this time and what by product would you expect to build up in cells
Fermentation and lactate
The xylem conducts
Water and nutrients
The pholem conducts
Sugars
