Two hundred seventy-five grams of carbohydrate provides what percent of calories from carbohydrate in a 2,000 kcal diet?

A. 25
B. 40
C. 55
D. 60

Which flexible structure that supports the nerve cord and led to the backbone

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons