Which is observation proves that a cell is a eukaryote? A. it has DNA in the cell
B. it has ribosomes inside the cell
C. it has enclosed organelles inside the cell
D. it is surrounded by a cell membrane

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger

i don't know. if i were you, i would search it up online : d