The movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.
The thinking habits of your brain and how they could work
All of the organelles in eukaryotic cells such as the<span> nucleus, endoplasmic reticulum, and mitochondria, are </span>located in the cytoplasm!! Duh!!! haha pretty much everything is in the cytoplasm!
Answer:
Symbiosis is a close relationship between two species in which at least one species benefits. Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.
Answer:by being produced in the testes outside the body
Explanation: spermatogenesis is the production of male gamates,the sperm.this process occurs in the seminiferous tubules in the testes.epithelial cells produces the primary spermatocyte which divides to give a secondary spermatocyte.
The secondary spermatocyte divides to form spermatids,which differentiates to form the spermatozoons.
Testis is housed in the scrotal sac.
Sperm production is sensitive to temperature. Too high temperature can cause formation of abnormal cells . As a result the scrotal sac is located outside the body
