<span>The question says, vertebrates have notochord during early embryonic development. The statement is true. A notochord is a cartilaginous skeletal rod which support the body in all embryonic and some chordate animals. It has essential role in vertebrate development. It is a primitive beginning of the spinal cord.</span><span />
ATP i think! Have a good day, and good luck!
Correct answer: A) A small structure within the cell that serves specialized functions
Organelles are small,specialized structures found inside the cell which perform a specific task and help in the functioning of the cell.
Organelles are known to be found in all the eukaryotic cells. There they serve a essential and specialized functions such as making proteins, getting rid of waste, harvesting energy etc.
Example: Mitochondria, endoplasmic reticulum, nucleus etc.
B. Immune suppression is the only one that could be caused by sleep deficiency.
