In a muscle contraction, the Z lines of a
sarcomere are ___.
a. closer together but not overlapping
b. further apart
c. the same distance as when not contracting
d. thicker
e. overlapping
A
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Fossilized wood and bone fragments can be accurately aged using ____
a. Thorium-232 b. Uranium-238 c. Uranium-235 d. Potassium-40 e. Carbon-14
The field of study that focuses on how genes determine an individual's response to a medication is
a. pharmacokinetics. b. pharmacodynamics. c. pharmacogenetics. d. pharmacotherapeutics. e. pharmacoeugenics.
Which of the following is a macroparasite?
A) virus B) bacterium C) tick D) protozoan
Which statement is true?
A) A line of lobe-finned fishes gave rise to tetrapods, and a line of tetrapods gave rise to modern amphibians. B) A line of tetrapods gave rise to chordates, and a line of lobe-finned fishes gave rise to tetrapods. C) A line of amphibians gave rise to tetrapods, and a line of lobe-finned fishes gave rise to modern amphibians. D) Tetrapods and amphibians evolved at approximately the same time, while lobe-finned fishes evolved 2 million years later.