The smooth endoplasmic reticulum functions in synthesis of
A) lipids.
B) polysaccharides.
C) proteins.
D) DNA.
E) all of the above
A) lipids.
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Antibiotics incorporated into the culture medium can ________.
A. select against organisms that have not incorporated the plasmid and select against organisms that have incorporated a plasmid not containing the desired gene B. select against organisms that have not incorporated the plasmid C. enhance production of recombinant proteins D. select against organisms that have incorporated a plasmid not containing the desired gene
Scurvy is caused by a lack of which nutrient?
A) Calcium B) Vitamin D C) Vitamin C D) Omega-3 fatty acid
Researchers studying an endangered lizard species find a successful population of the lizard in a certain area. The researchers determine that this population has reproduced primarily through parthenogenesis. What are the researchers likely to recommend to conservation officials who are trying to protect the species?
a) move the successful population to a different area where lizard populations are struggling b) remove all lizards from the wild and place them in a captive breeding program c) remove as many predators as possible from the area with the successful population d) try to prevent changes to the environment in the area with the successful population
Which of the following genetic disorders is due to a lack of the lysosome enzyme hex A?
A. Marfan syndrome B. cystic fibrosis C. Tay-Sachs disease D. Huntington disease E. sickle-cell disease