Which of the following is NOT an active form of an
enzyme?
a. trypsin
b. amylase
c. pepsin
d. pepsinogen
e. chymotrypsin
Answer: d
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Which early scientist proposed that cells arise only from preexisting cells by a process of division?
a. Anton van Leeuwenhoek b. Robert Brown c. Matthias Schleiden d. Theodor Schwann e. Rudolf Virchow
Oils are
a. liquid at room temperature. b. unsaturated fats. c. found only in animals. d. complex carbohydrates. e. both liquid at room temperature and unsaturated fats
The actual sites of recombination during prophase I of meiosis are called kinetochores
1.True 2.False
In reabsorption,
a. plasma proteins are returned to the blood. b. excess hydrogen ions are removed from the blood. c. excess water is passed on to the urine. d. nutrients and salts are selectively returned to the blood. e. drugs and foreign substances are passed into the urine.