Question 1 When a person is in a fasted state, they feel hungry and this may be
ID: 3508743 • Letter: Q
Question
Question 1
When a person is in a fasted state, they feel hungry and this may be regulated by a hormone called ghrelin which is present in high quantities during a fasted state. When they are fed, ghrelin levels drop and the subjective feeling of hunger goes away. This is an example of a ...
A.
Negative feedback loop
B.
Positive feedback loop
C.
Unilateral feedback loop
D.
None of the above
Question 2
Enzymes basically work by...
A.
Directly providing ATP for muscle contraction
B.
Lowering the activation energy required to drive the reaction
C.
Combining with NAD+ to provide energy
D.
Helping oxygen attach to substrate during metabolism
E.
Both A and B
Anaerobic glycolysis yields a net gain of...
5 ATP
10 ATP
8 ATP
2 ATP
Question 4
Work is defined as
the ability to transform energy from one state to another
the ability to utilize oxygen
force times distance
distance times power output
Question 5
6 NADH’s will produce 15 ATP in the electron transport chain.
True
False
After a few minutes of easy jogging at a submaximal intensity, my oxygen consumption and heart rate reach a plateau and stay at that level for 20 to 30 minutes as I am jogging. With regards to oxygen consumption this would be an example of ...
A.
intermittent exercise
B.
an oxygen deficit
C.
incremental exercise
D.
a steady state
E.
homeostasis
A.
Negative feedback loop
B.
Positive feedback loop
C.
Unilateral feedback loop
D.
None of the above
Explanation / Answer
Answer 1) negative feedback
Answer 2) enzymes work by lowering the activation energy required to derive the equation.
Answer 3) 2 ATPs are produced by anaerobic glycolysis.
Answer 4) c) force * distance is defined as work. Work is a measure of the energy expended in applying a force to move an object.
Answer 5) false. 3 ATPs are produced from each NADH. hence this statement is false. 6 NADH will produce 18ATPs.
Answer 6) it is an example of steady state.
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