Plant cuticles, which reduce water loss, are primarily made of:
a. steroids
b. triglycerides
c. oils
d. waxes
e. fats
d
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Which of the following is considered to be
most closely related to land plants? a. red algae b. chlorophytes c. charophytes d. trypanosomes e. all of these
Bacterial strains that are characterized by biochemical differences are called ________.
Fill in the blank(s) with the appropriate word(s).
A cell biologist has developed a new drug that blocks vesicle transport at the cis face of the Golgi apparatus. What will this drug prevent from happening inside a cell?
A. The movement of vesicles from mitochondria to the Golgi apparatus. B. The synthesis of proteins or lipids on the endoplasmic reticulum. C. The movement of materials from the Golgi apparatus to the plasma membrane. D. The movement of the lipids and proteins from the endoplasmic reticulum to the Golgi apparatus.
The enzyme fumarase catalyzes the reversible hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of:
A) biological activity. B) chiral activity. C) racemization. D) stereoisomerization. E) stereospecificity.