Hexokinase enzyme uses what metallic cofactor to transfer phosphate to glucose
a. iron
b. nickle
c. zinc
d. magnesium
d. manganese
Answer: d. magnesium
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Axons forming the optic nerve are derived from ____
a. amacrine cells b. horizontal cells c. bipolar cells d. vertical cells e. ganglion cells
Using PGD to screen for embryos that would become suitable donors for siblings is illegal under any
circumstance. Indicate whether the statement is true or false.
Mendel conducted his most memorable experiments on
A) peas. B) roses. C) guinea pigs. D) fruit flies.
Which statement about conifers such as the spruce tree is most accurate?
A) Male conifers produce cones while female trees produce flowers. B) They are the largest seedless vascular plants. C) They comprise about three-fourths of all gymnosperm species. D) They are rare, fruit-bearing gymnosperms. E) They comprise a small percentage of angiosperm species.