Which of the following correctly describes connective tissue?

-made of electrically charged cells that send messages
-made of sheets of cells that are tightly joined together and attached to a basement membrane
-made of cells capable of contraction
-made of cells that are separated by a nonliving matrix

Idk i need the answer to this question as well

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."

carbon

explanation: