They allow passage for large molecules which cant normaly diffuse throught the phopholipid layer and import and export ions
Answer:
Explanation:
Answer Expert Verified. The presence of oxygen and levels of ATP.
Meiosis is the mechanism used for producing gametes in multicellular organisms whereas it does not play any role in unicellular organisms.
Meiosis produces gamete, or sex, cells and occurs only in multicellular organisms.
Mitosis produces somatic, or body, cells and can occur in both multi and uni cellular organisms.