Organisms living in aquatic environments are affected by physical factors like temperature, salinity, the force of the waves and the availability of light. These factors can limit the dispersal of organisms in the ecosystem.
Biotic factors like competition and predation can also limit the living areal of certain organisms. Organisms can competitively exclude other in certain habitats and some organisms can be limited by the presence of predators.
The answer is C. Exocytosis is when the vesicle fuses with to the cell membrane and releases its contents outside of the cell.
Answer:
mRNA
Explanation:
There are various types of RNA. The mRNA, rRNA, and tRNA. The tRNA is transfer RNA that brings amino acids during the process of translation to ribosomes. The rRNA is ribosomal RNA and are involved in process of translation. The mRNA is messenger RNA that allows encoding of amino acid sequence from polypeptide chain.
Answer:
Negative; Estrogens and progesterone
Contraceptive pills mimic the negative feedback effect of estrogens and progesterone.
Explanation:
- <em><u>Estrogens and progesterone are regulated by negative feedback mechanisms, and therefore, birth control pills make use of this fact.</u></em>
- <em><u>Birth controls pills adds extra amount of estrogen and progesterone which inhibits the release of these hormones by the body.</u></em>
- Consequently the release of an egg from the ovary is inhibited and the lining of the uterus is made to become thin and unsuitable for pregnancy by the absence of progesterone hence decrease the secretion of the luteinizing hormone and the follicle stimulating hormone by negative feedback.This process ends up inhibiting ovulation.
