Who proposed that in any DNA molecule, A = T and G = C?
A. Franklin
B. Watson and Crick
C. Hershey and Chase
D. Chargaff
Answer: D
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“Solutes move from the blood in capillaries
into adjacent tubules.” This is a description of
a. filtration. b. reabsorption. c. secretion. d. elimination. e. excretion
The accumulating data from biogeography, comparative morphology, and fossil discoveries led early naturalists to
propose that species ____.
a. helped sculpt Earth's surface by foraging activities b. are all evolutionarily related c. had changed over time d. never went extinct e. were created in a perfect state
An example of a properly functioning homeostatic control system is seen when _____
A) the core body temperature of a runner rises gradually from 37°C to 45°C B) the kidneys excrete salt into the urine when dietary salt levels rise C) a blood cell shrinks when placed in a solution of salt and water D) the blood pressure increases in response to an increase in blood volume
What class do lobsters belong to?
A. Arachnida B. Arthropoda C. Chelicerata D. Crustacea E. Malacostraca