The ____ is responsible for making the lipids that form the cell’s membranes
a. rough ER
b. smooth ER
c. Golgi body
d. peroxisomes
e. mitochondria
ANSWER: b
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Which process is not a method of asexual reproduction?
a. production of new plants at nodes along stolons in strawberries b. humans growing trees from cuttings c. production of new plants at nodes along underground rhizomes in Bermuda grass d. buds from an underground stem of an onion e. self-fertilization
An example of local control over breathing is ____
a. automated lung ventilation and perfusion adjustments to changing O2 levels in the blood b. the aortic bodies signaling an increase in breathing rate when blood pH is acidic c. refinement by the interneuron groups of the pons of contractions involved in inhalation and exhalation d. the carotid bodies signaling an increase in breathing rate when O2 levels are low e. the ventral group of interneurons signaling an increase in breathing rate and depth during exercise
Which pair represents the correct complementary bonding of nitrogen containing bases in a DNA molecule?
a. adenine and cytosine b. adenine and guanine c. cytosine and thymine d. guanine and cytosine e. guanine and thymine
Why is agar a useful substance in the microbiology lab?
a) agar dissolves in water at about 60 C b) Agar does not solidify until it cools to about 40 C c) Agar is a good source of nutrients for microbes d) Solid agar melts at temperatures about 40 C