A deficiency of this in pregnant women can result in neural tube defects such as spina bifida.
A. Vitamin B
B. Folate
C. Vitamin D
D. Melanin
Answer: B. Folate
Biology & Microbiology
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Bdellovibrio
A. prey on other bacteria. B. are parasites of plants. C. may fix nitrogen. D. are photosynthetic.
Biology & Microbiology
The disaccharide in the accompanying figure is ____
a. cellulose b. galactose c. maltose d. sucrose e. lactose
Biology & Microbiology
The element needed for blood clotting, nerve
transmission, and bone formation is a. iron. b. iodine. c. calcium. d. zinc. e. magnesium.
Biology & Microbiology
Restriction enzymes
a. make staggered cuts. b. function only at "sticky ends." c. produce uniform lengths of DNA. d. function only in genetic laboratories. e. are fragments of DNA.
Biology & Microbiology