1. because cells have a watery environment both inside and outside, the polar ends of the phospholipids in the plasma membrane form layers
aseveral

bmosaic

cdouble

dsingle

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

What is the role of dna ligase in the elongation of the lagging strand during dna replication?