Which of the following structures is made of keratin? comedone nail plate furuncle melanin
a) comedone
b) nail plate
c) furuncle
d) melanin

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

When trimming plants and vines: a.burn all the poisonous plants b.touch poison oak and poison sumac with your bare hands c.wear gloves d.cut as quickly as possible

If a viral host cell has a mutation that interferes with the addition of carbohydrates to proteins in the golgi, which of the following could likely result? a) the viral envelope proteins would not be glycosylated and might not arrive at the host plasma membrane.b) the viral capsid proteins would not be glycosylated and might not arrive at the host plasma membrane.c) the viral core proteins would not be glycosylated and might not arrive at the host plasma membrane.d) the virus would be unable to reproduce within the host cell