If two enzymes (e.g., pyruvate dehydrogenase and pyruvate carboxylase) compete for the same substrate (pyruvate), the one with the higher Km has less affinity and will be more active when pyruvate concentrations are high.
Indicate whether the statement is true or false
Q. 2When discussing enzyme kinetics, Km refers to the substrate concentration at which the enzyme is saturated and functioning at maximal velocity.
Indicate whether the statement is true or false
Q. 3Polysomes function to transcribe mRNA into proteins.
Indicate whether the statement is true or false
Q. 4Different cells express different proteins because they contain different sequences of DNA in the nucleus.
Indicate whether the statement is true or false
Q. 5Peripheral proteins are involved in cell-cell recognition, whereas integral proteins function primarily as receptors/transporters.
Indicate whether the statement is true or false
Q. 6The various components within a cell (e.g., mitochondria) are not free-floating in the cytosol, but rather, are held in place by the cytoskeleton.
Indicate whether the statement is true or false
Q. 7The lipid bilayer determines the function of the plasma membrane, while the proteins are primarily responsible for the structure of the membrane.
Indicate whether the statement is true or false
Q. 8The plasma membrane is a sheet-like structure composed solely of lipids.
Indicate whether the statement is true or false
Q. 9Phosphorylation of a molecule is generally accomplished by transferring the terminal phosphate group from which substance?
A) GTP
B) pyruvic acid
C) G6PD
D) ATP
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