Based on your knowledge of the chemistry of the cell membrane, which of the following compounds would you couple with a new drug in order to achieve better uptake by cells?
A) carbohydrates
B) polar amino acids
C) lipids
D) several mannose-6-phosphate monomers
E) any hydrophilic substance
C) lipids
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The following are considered bacterial virulence mechanisms EXCEPT
A. Intracellular growth B. Phagocytosis in which the microbes ingest particulates of host B. Spallanzani C. Pasteur D. Needham
Which statement regarding DNA packing is false?
A) A nucleosome consists of DNA wound around a protein core of eight histone molecules. B) DNA packing tends to promote gene expression. C) Highly compacted chromatin is generally not expressed at all. D) Prokaryotes have proteins analogous to histones.
The expression "pull of the recent" refers to the fact that ________
A) younger fossils are more important for the study of evolution than older fossils B) older rocks are more likely to be volcanic rocks with no fossils C) younger rocks are more likely to be covered up or otherwise inaccessible D) the quality of the fossil record gets worse the farther back in time you look E) younger fossils are more likely to be preserved by permineralization
All living amphibians are herbivorous as adults
a. True b. False