Based on fossil evidence, eukaryotes evolved about ________ years ago
A) 500,000
B) 1 billion
C) 1.8 billion
D) 3.5 billion
C
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In animals, which of the following structures is largely composed of extracellular matrix?
A. kidney B. intestine C. eye D. cartilage E. muscle
The body mass index is used to
a. determine a healthy weight based on height. b. calculate a person's percentage of body fat. c. calculate a person's percentage of muscle. d. determine how many calories a person should consume per day. e. determine a healthy weight based on height, and to determine how many calories a person should consume per day.
Which of the following is a native protein isolated from bacteria and used to digest starches?
A) Cellulase B) Amylase C) Chymosin D) Penicillin E) Polymerase
If a cell has a normal osmotic pressure of 4500 mmHg and is placed into a solution with an osmotic pressure of 3500 mmHg, what will happen to the cell?
A. The cell will lose water and its osmotic pressure will increase. B. The cell will gain water and its osmotic pressure will decrease. C. The cell will lose water and its osmotic pressure will decrease. D. The cell will gain water and its osmotic pressure will increase.