Your answer is A. <span>Some animals exhibit similar proteins.
(I deleted the other answers so future viewers won't get confused.)</span>
Embryonic stem cells can be readily grown in culture and exhibit unique properties, including spontaneous differentiation into three germ layers in vitro or teratoma formation in vivo. In contrast, adult stem cells are rare, undifferentiated cells present in many adult tissues. I hope this answer helps you. Have a lovely day.
The cardiovascular and immune
Answer:Taxi's might get private police channels , and police radios would pick up unnecessary channels
Explanation: not sure if that's what you mean
Answer:
secondary structure ... hydrogen bonds...
Explanation: Some regions of a polypeptide may coil or fold back on themselves. This is called secondary structure, and the coils or folds are held in place by hydrogen bonds.
