What was the purpose of miller and urey's experiment?
a. to find out of prokaryotes evolved from eukaryotes
b. to determine whether prokaryotes have cell membranes
c. to measure the number biological molecules on earth
d. to see if simple molecules can combine spontaneously

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform

The two main stages of cell division are called