The relationship between a gene and a messenger RNA is that ________
A) mRNAs are made from genes
B) genes are structurally identical to mRNAs
C) mRNAs make proteins, which then code for genes
D) mRNA is directly responsible for making Okazaki fragments
E) genes are made from mRNAs
A
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A classification system based on evolutionary relationships is called a ________ system.
A. determinative B. phylogenetic C. systematic D. phenetic
In humans, the gonads do all of the following
a. produce gametes. b. secrete hormones. c. nourish the embryo. d. produce gametes and secrete hormones. e. produce gametes, secrete hormones, and nourish the embryo.
What is the term for the volume of air moved into the lungs every minute?
A) alveolar ventilation B) minute ventilation C) tidal volume D) pulmonary ventilation E) total lung capacity
The ascending portion of the loop of Henle is
A. impermeable to water and permeable to sodium. B. permeable to water and impermeable to sodium. C. the site of active transport of water. D. permeable to water and permeable to sodium. E. impermeable to water and impermeable to sodium.