The two strands of a DNA molecule are ________; that is, they are oriented in opposite directions.
Fill in the blank(s) with the appropriate word(s).
antiparallel
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The first amino acid of a new polypeptide chain is
a. alanine. b. cysteine. c. variable. d. phenylalanine.
e. methionine.Identify the stage (or stages) of cellular respiration that occurs entirely outside of the mitochondria
A) Citric acid cycle B) Electron transport chain C) Glycolysis D) All of the above
After activation, these cells have the ability to move toward an enemy cell, press up against its surface, and make holes in it.
A. cytotoxic T-cells B. T-regulator cells C. antigen-presenting cell (APCs) D. B-cells
Males tend to be affected in greater numbers by X-linked recessive genetic disorders than are females because
A. expression of the recessive gene is inactivated by the other X chromosome in females. B. males have only one X chromosome. C. males have a double dose of the gene. D. Y chromosomes are destabilized by the X chromosomes. E. females have only one X chromosome.