What is the name of a bead-like globular protein that can contract?
a. sarcomere
b. filament
c. myofibril
d. actin
e. myosin
Answer: e. myosin
Biology & Microbiology
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The most common measurement of energy in biological systems is the kilocalorie. This is the amount of energy that would be required to raise the temperature of what quantity of water one degree Celsius?
A. 0.1 g B. 1 g C. 10 g D. 1,000 g E. 10,000 g
Biology & Microbiology
Plant cells assimilate nitrogen in the form of:
a. ammonia and N2 b. N2 and nitrite c. nitrate and ammonia d. urea and nitrate e. N2 and urea
Biology & Microbiology
In females, a(n) primary oocyte completes meiosis II at the time of fertilization. Indicate whether the statement is true or false
Biology & Microbiology
Which of the following is NOT associated with viruses?
A) organelles B) nucleic acid C) envelope D) chemical reactions E) protein coat
Biology & Microbiology