After the dna is copied (dna replication), two sister chromatids are held together by

a
a centromere
b
a chromosome
c
a centrosome
d
a centriole

What are some characteristics of a free enterprise economy?

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?

Everything that surrounds a particular organism