CH3 Energy, Chemicals Reactions, and Cellular Respiration Flashcards
Which one of the following choices includes three descriptions that are consistent with each other (that is, that describe the same type of chemical reaction)?
Anabolic, dehydration, endergonic
The term “metabolism” refers to
All the chemical reactions that occur in the body
In a chemical reaction where an electron is exchanged from one reactant to another, the structure that loses an electron is
Oxidized
The region of an enzyme into which the substrate fits is a
Highly-Specific Active Site
The optimal pH range for most human enzymes is
6-8
An enzyme that is described as a protein kinase is a
transferase that transfers a phosphate group to a protein substrate.
Which enzyme system allows for regulation at a single site and also diminishes the chance that a needed substrate will diffuse away from a catalyst?
Multenzyme Complex
Pancreatic amylase _________ the cells that make it, so the enzyme can serve its function (digestion of starch) in the lumen of the small intestine.
is secreted from
Enzyme regulation by negative feedback involves
allosteric INHIBITION of an enzyme by a product of its metabolic pathway.
When an enzyme catalyzing a CATabolic reaction changes conformation to an induced fit with the substrate,
it stresses chemical bonds in the substrate, making it easier to BREAK them.
To prevent depletion of a substrate, the product of a metabolic pathway will
Turn off an enzyme early in the pathway
The coenzymes that will provide the electrons needed for the electron transport system are
NADH & FADH2
Fatty acids enter the cell respiration pathway at
during the Citric Acid Cycle, when they have been converted TO Acetyl CoA
When one glucose molecule is fully oxidized, how many molecules of CO2 result?
6
The total number of ATP generated by the breakdown of glucose is 38, but the net number of ATP generated is
30
