During muscle contraction, myosin cross bridges attach to which active sites on

3points which of these are associated with a sedentary lifestyle? select the two correct answers. a. physical fitness b. lack of energy c. normal bmi o d. increased risk of disease

True or false a fertilized cell divides many times to form an embryo

When do people generally experience rapid growth for a second time? a. between the ages of 3 and 9 b. between the ages of 9 and 12 c. between the ages of 13 and 20 d. between the ages of 25 and 29 which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.