Darwin might have made greater advances in his theory of evolution by natural selection if he had:a
read of the work of Charles Lyell.
b. taken into consideration the theories of Malthus.
c. taken into consideration the work of Gregor Mendel.
d. performed experiments in plant growth and development.
e. visited other remote islands that contained a limited number of species.
c
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In a single sodium-potassium pump cycle, ATP is used with the result that
A. 3 sodium ions leave and 2 potassium ions enter. B. 2 sodium ion enters and 1 potassium ion leaves. C. 2 sodium ion leaves and 1 potassium ion enters. D. 3 sodium ions enter and 2 potassium ions leave. E. sodium and potassium ions enter and water leaves.
Which of the following functions best explains the reason for the asymmetrically oriented structure of
the proteins in the cell membrane? a. These proteins are manufactured by free ribosomes. b. Each type of protein has its own function. c. These proteins pass through the ER membrane into the ER lumen. d. Enzymes are needed to modify the carbohydrate chains on these proteins. e. These proteins are initially formed by ribosomes on the rough ER.
Which of the following are consequences of hyperventilation?
a. Increasing H+ levels b. Increasing alveolar PCO2 c. Decreasing arterial PCO2 d. Higher blood pH
What type of mutation alters the base, but not the amino acid being coded for?
A. point B. silent C. missense D. back E. nonsense