8.3 Multiple Choice Flashcards
What term is used to describe the transfer of free energy from catabolic pathways to anabolic pathways?
Energy coupling
Which of the following statements is true concerning catabolic pathways?
They are usually couples with anabolic pathways to which they supply energy in the form of ATP.
When chemical, transport, or mechanical work is done by an organism, what happens to the heat generated?
It is lost to the environment.
When ATP releases some energy, it also releases inorganic phosphate. What purpose does this serve in the cell?
It can be added to other molecules in order to activate them
If a muscle cell cytosine has free calcium ion concentration of 10^-7 in a resting cell, while the concentration in the SR can be 10^-2, then how is the ATPase acting?
ATPase activity must be pumping calcium to the cytosine to the SR against the concentration gradient
What must be the difference between the structure of ATP and the structure of the precursor of the A nucleotide in DNA and RNA
There is no difference
What is energy coupling?
When the energy from one reaction is used by another reaction
