The atomic number refers to the
a. mass of an atom.
b. number of protons in an atom.
c. number of both protons and neutrons in an atom.
d. number of neutrons in an atom.
e. number of electrons in an atom.
Answer: b
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An individual heterozygous for sickle-cell disease produces both normal and abnormal polypeptides. This is an
example of ____.
a. epistasisb. incomplete dominance c. polygenic inheritance d. multiple alleles e. pleiotropy
The set of phenotypes expressed by a single genotype across a range of environmental conditions is referred as the norm of ________
Fill in the blank(s) with correct word
The secretion of pepsinogen and HCl is controlled by the hormone
A. insulin. B. gastrin. C. pepsin. D. secretin. E. cholecystokinin.
The role of ATP in the sodium-potassium pump is to:
a. transfer NA+ to the inside of a cell. b. assist a NA+ to bind to a carbohydrate. c. transfer NA+ to the outside of a cell. d. assist a cell to release NA+ by exocytosis. e. assist a cell to take up NA+ by endocytosis.