Which statement is scientifically based? Mutations rarely occur.

All mutations are harmful.

Some mutations can be contagious, like infections.

Mutations are not passed from parent to offspring.

the answer to your question is sperm

a symbiotic relationship with the mitochondria

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.