Many human cells divide a finite number of times before going into permanent arrest, a phenomenon called which appears to be caused by the loss of telomeres.

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

The combining form leuk/o means red true or false

Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz