Proteins that speed up chemical reactions are
a. substrates.
b. reactants.
c. enzymes.
d. amino acids.
e. carboxyl groups
C
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The pentose phosphate pathway is the major glycolytic pathway used by archaea.
Answer the following statement true (T) or false (F)
Genes that help to control body weight encode the proteins
A) fibrin, fibrinogen, and hemoglobin. B) collagen, elastin, and dystrophin. C) estrogen, testosterone, and progesterone. D) leptin, ghrelin, and the melanocortin-4 receptor.
Homeotic genes of Drosophila:a
cause cells of the same type to produce differing amounts of gene products. b. specify the developmental plan(s) for each segment. c. are expressed in only one sex in any particular species. d. are always the sites of lethal mutations. e. control developmental timing.
Which type of adaptation is most likely to occur over evolutionary time?
a) one that increases the physiological complexity and sophistication of the individuals in a population b) one that increases the physiological simplicity of the individuals in a population c) one that causes the individuals in a population to more closely resemble humans d) one that causes the individuals in a population to more efficiently reproduce in the environment in which they live e) one that causes the individuals in a population to have greater intelligence