Which of the following describes the role that enzymes play in the process of metabolism? a. enzymes store the chemical energy that is used to construct nucleic acids during metabolism. b. enzymes provide the chemical energy that is broken down and released during metabolism. c. enzymes increase the rate of the chemical reactions carried out during metabolism.

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

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions