What is the name of a sudden and involuntary muscular contraction, often accompanied by pain?
A. spasm
B. bursitis
C. tic
D. strain
E. sprain
Answer: A
Biology & Microbiology
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What is the organism with the longest evolutionary history in this diagram?
a. human b. pig c. snake d. yeast
Biology & Microbiology
Males are often more colorful, larger, and aggressive than females. What is the term for these types of differences between the sexes?
a. male traits b. sexual traits c. sexual dimorphism d. male dominance e. hormonal variance
Biology & Microbiology
Net photosynthesis is equal to
A) photosynthesis + respiration. B) photosynthesis - respiration. C) photosynthesis x respiration. D) photosynthesis / respiration.
Biology & Microbiology
The outcome of cleavage during embryonic development is the production of a
A. substantially larger embryo. B. gastrula. C. blastula. D. neurula. E. None of the choices are correct.
Biology & Microbiology