Four of the five answers listed below are members of the B complex vitamins. Select the exception
a. ascorbic acid
b. folic acid
c. pantothenic acid
d. riboflavin
e. thiamine
A
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Desmosomes are a type of ____________________ junction. Fill in the blank(s) with the appropriate word(s)
A phenomenon known as ________ [one or two words] occurs under conditions where a strong selection pressure acts on a particular change in an amino acid, which results in the corresponding increase in frequency of a closely linked neutral (or even
mildly deleterious) mutation. Fill in the blank(s) with correct word
What role does lignin play in a plant's adaptation to life on land?
A) Prevents drying out B) Strengthens the cell wall to allow plants to stand up straight and tall C) Anchors the plant in the soil to allow plants to grow tall D) Transports nutrients throughout the plant
In a healthy male, how many sperm cells would be expected to be formed from (a) 400 primary spermatocytes? (b) 400 secondary spermatocytes?
A) (a) 800; (b) 800 B) (a) 400; (b) 400 C) (a) 1600; (b) 800 D) (a) 1600; (b) 1600 E) (a) 100; (b) 800