Amylase has specific active sites for which type of molecule?
a. carbohydrates
b. proteins
c. lipids
d. amino acids
A
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Which one of the following is a pyrimidine found in DNA?
A. adenine B. guanine C. uracil D. thymine E. None of these choices is pyrimidines found in DNA.
A cotyledon is which of the following?
a. embryonic root b. seed cover c. flower part d. an embryonic leaf e. fruit
The major difference between the smooth and rough ER is that ____
a. smooth ER is isolated to the nucleus b. vesicles are found only in the smooth ER c. rough ER contains ribosomes d. smooth ER is the site of polypeptide synthesis e. rough ER is the site of lipid synthesis
The function of the structure labeled 4 in Figure 41-1 is to:
a. regulate respiration.
b. coordinate complex muscular activities.
c. interpret visual stimuli.
d. act as a relay center for motor and sensory messages.
e. integrate olfactory information.