A receptor protein in a membrane that recognizes a chemical signal is most similar to __________
A) the active site of an allosteric enzyme in the cytoplasm that binds to a specific substrate.
B) RNA specifying the amino acids in a polypeptide.
C) a particular metabolic pathway operating within a specific organelle.
D) an enzyme with an optimum pH and temperature for activity.
E) genes making up a chromosome.
Ans: A) the active site of an allosteric enzyme in the cytoplasm that binds to a specific substrate.
You might also like to view...
Which of the following is not true of the term
senescence? a. It may refer to cells. b. It refers to the shedding of plant parts. c. It means aging. d. It may refer to communities. e. It may refer to individuals
Which cellular structure is unique to prokaryotic organisms?
A) Ribosome B) Plasma membrane C) Plasmids D) Cell wall
Bacterial ____ cause systemic symptoms such as fever, whereas bacterial ____ cause more specific maladies
a. phages; prophages b. prophages; phages c. exotoxins; phages d. exotoxins; endotoxins e. endotoxins; exotoxins
emulsification of fats, digestion of carbohydrates, digestion of proteins, absorption of nutrients
What will be an ideal response?