When the end product of a pathway inhibits catalysis of the first step of that pathway, this phenomenon is called
A. feedback inhibition.
B. metabolic channeling.
C. reversible covalent modification.
D. non-competitive inhibition.
Answer: A
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Autoimmunity and autoimmune disease are both most often fatal.
Answer the following statement true (T) or false (F)
The haploid stage of the red algae life cycle is called:
a. sporophyte. b. zygote. c. gamete. d. gametophyte. e. tetrasporophyte.
How long is the typical ovarian cycle?
a. 26 days b. 24 hours c. 28 days d. 31 days e. 22 days
What factor allows the dominant mutant allele for Huntington's disease to persist in human populations
despite its devastating effects? a. Heterozygote advantage. b. The fact that its symptoms do not typically show until after the individual has had children. c. Its effects are not expressed in heterozygous individuals. d. Its effects are only expressed in homozygous recessive individuals. e. Its effects are only expressed in homozygous dominant individuals