Question 49 Aerobic production of ATP predominately occurs ... A. in the mitocho
ID: 578184 • Letter: Q
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Question 49
Aerobic production of ATP predominately occurs ...
A.
in the mitochondria in a process called glycolysis
B.
in the cytoplasm in a process called glycolysis
C.
in the cytoplasm in the electron transport chain
D.
in the mitochondria in the electron transport chain
E.
both B and C
Question 40
In negative feedback, the response of the system is ...
A.
to increase the effectiveness of the stimulus
B.
opposite that of the stimulus
C.
to modify a receptor’s response to the stimulus
D.
both A and C are correct
E.
none of the above are correct
Question 35
Which of the following statements is true concerning homeostasis?
A.
The terms steady state and homeostasis refer to the same thing; therefore a homeostasis could be attained during exercise.
B.
A true homeostasis is not attained during exercise; however a steady state may be attained with exercise.
C.
If I were shivering (from cold temperatures); I could still be in homeostasis.
D.
If I am in a steady state, I am automatically in homeostasis
E.
None of the above are true
Question 34
Which of the following metabolic pathways generates the most ATP if it is only taking place once?
A.
the ATP – PC pathway
B.
anaerobic glycolysis
C.
anaerobic glycolysis combined with the electron transport system
(skipping the Krebs cycle)
D.
beta oxidation combined with the electron transport system
(skipping the Krebs cycle)
Question 24
What is the fate of lactate following exercise cessation?
Rapid removal in urine since lactic acid is harmful to the body
Converted to glucose/glycogen by the Cori cycle
Rapid lactate detoxification by the liver
Lactate is oxidized and used as a substrate and a percentage of it is used to regenerate glucose stores via the Cori cycle
Question 23
The electron transport is not utilized to make ATP when at rest.
True
False
A.
in the mitochondria in a process called glycolysis
B.
in the cytoplasm in a process called glycolysis
C.
in the cytoplasm in the electron transport chain
D.
in the mitochondria in the electron transport chain
E.
both B and C
Explanation / Answer
49. Option A
A.
in the mitochondria in a process called glycolysis
Anaerobic reactions occur in the cytoplasm of the cell and aerobic reactions occur in the mitochondria of the cells.
40. Option B
B
opposite that of the stimulus
The response to the stimulus leads to change.The change is feedback to the receptor.In negative feedback the response of the system cancels or counteract the effects of the original stimulus.
if the response reverses the stimulus, a system is operating by negative feedback.
+ feedback system continually reinforces a change in a controlled condition, some event outside the system must shut it off. If the action of a positive feedback system is not stopped, it can "run away" and may even produce life-threatening conditions in the body. The action of a negative feedback system, by contrast, slows and then stops as the controlled condition returns to its normal state. Usually , positive feedback systems reinforce conditions that do not happen very often, and negative feedback systems regulate conditions in the body that remain fairly stable over long periods.
negative feedback mechanism: when the effector;s output shuts off the stimulus that originally activated the receptor or reduces its intensity.
negative feedback mechanism also causes a variable to change in a direction that is opposite to the initial change which effectively returns the variable to its normal range
35. Option E
None of the above are true
Homeostasis: Its the DYNAMIC constancy of the INTERNAL physiological environment, the ability of the body to maintain a relatively CONSTANT internal environment, regardless of the surrounding Environment Changes.
Homeostasis is the condition in which the body maintains a relatively stable internal environment, within limits.
A.
in the mitochondria in a process called glycolysis
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