Some aquatic poikilotherms (e.g., sharks) are able to maintain a higher internal body temperature than the surrounding water
Indicate whether the statement is true or false
TRUE
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Inside root cells, ____ is converted to ____, which is then rapidly used to synthesize organic
molecules.
a. NH4 +; NO3 ? b. N2; NO3 ? c. NO3 ?; NH4 + d. NH3; NH4 + e. NO3 ?; N2
Although the genetic contributions of egg and sperm
nuclei are equal, the egg contributes more to cell differentiation because of a. its energy reserves. b. its cytoskeletal elements. c. its specialized proteins. d. its maternal messages. e. all of these.
Animals get energy from food through the process of cellular respiration.
a. true b. false
The energy source for substrate-level phosphorylation (SLP) differs from that of oxidative phosphorylation (OP) in that ________.
A. OP is driven using energy provided by a proton motive force, whereas the energy to add a phosphate group to ADP during SLP comes from the direct transfer of a phosphate group from a molecule with a higher phosphate transfer potential than ATP B. SLP is driven using energy provided by a proton motive force, whereas the energy to add a phosphate group to ADP during OP comes from the direct transfer of a phosphate group from a molecule with a higher phosphate transfer potential than ATP C. SLP is driven using energy provided by a proton motive force, whereas the energy to remove a phosphate group from ATP during OP comes from the direct transfer of a phosphate group from a molecule with a lower phosphate transfer potential than ATP D. OP is driven using energy provided by a proton motive force, whereas the energy to add a phosphate group to ADP during SLP comes from the direct transfer of a phosphate group from a molecule with a lower phosphate transfer potential than ATP