What class of macromolecule would most likely be involved in contracting muscles

Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand

Polar zones are cold and tend to be dry because of a pressure system of cold. low high

What would be he the strand of complementary dna produced be the strand of dna shown below> tcg aag