Which of the following pairs of molecules share the same chemical composition but differ in molecular structure?
A. starch and glycogen
B. glucose and fructose
C. DNA and RNA
D. lactose and sucrose
B. glucose and fructose
Biology & Microbiology
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Which of the following describes a plant shoot growing upward?
a. positive gravitropism b. negative thigmotropism c. negative gravitropism d. positive feedback
Biology & Microbiology
Which birth control method is the most effective in protecting against sexually transmitted diseases?
a. abstinence b. the Pill c. condoms d. an IUD e. the rhythm method
Biology & Microbiology
Air enters and leaves through the
a. upper epidermis. b. lower epidermis. c. stomata. d. mesophyll. e. all of these.
Biology & Microbiology
Which types of ratios are likely to occur in crosses (F2 ) when one is dealing with two interacting, epistatic gene pairs?
What will be an ideal response?
Biology & Microbiology