Cell membranes form because the hydrophobic tails on phospholipids try to _______________.
a) be near
b) stay away from
Ans: b) stay away from
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Mature siRNA annealed to its target usually leads to translational repression when:
A. the target mRNA is lacking its 5' cap. B. the siRNA is only partially complementary to the target. C. the target does not contain an Argonaute binding site. D. the siRNA is perfectly complementary to the target.
An individual whose resident normal microbiota overgrows the other indigenous organisms resulting in disease may be a result of:
a. the patient has received antibiotic treat-ment killing off some of the protective resident microbiota. b. become immunocompromised or unable to fight off infection in normal conditions. c. maybe suffering from a debilitating dis-ease resulting in a decreased balance be-tween normal microbiota and pathogenic organisms. d. all of the scenarios are potentially asso-ciated with the development of disease.
Which is true about prions?
A. They cause a degenerative brain condition. B. They are naked pieces of RNA. C. They are made of DNA and protein. D. They are a normal brain protein that has folded differently. E. They cause a degenerative brain condition AND they are a normal brain protein that has folded differently.
Most "hay fever" is actually caused by ragweed, and not hay grass
Indicate whether the statement is true or false