Question

which structure acts to facilitate zinc in gene expression?

a. couplets

b. brackets

c. fingers

d. folds

what biochemical action does Selenium have on vitamin E in the body.

a. selenium has no specific effect on vitamin E in the body

b. selenium in the diet reduce the need for vitamin E

c. selenium increase free radicals in the body limiting the effect of vitamin E as sn antioxidant

d. There is an increased need for vitamin E if dietary selenium levels are adequate.

Answer 1

1. Zinc fingers act to facilitate zinc in gene expression.

Zinc fingers are a type of protein that helps to coordinate zinc ions in to stabilize the fold.

Answer - c. fingers

2.

Answer - b. Selenium in the diet reduces the need for vitamin E

Its because Vitamin E is an antioxidant that prevents the oxidant damage to membranes by preventing the formation of harmful free radicals, Selenium also does the same in another way so, Selenium prevents some vitamin E deficiency symptoms. That's why Selenium in the diet reduces the need for vitamin E.