Answer:
Explanation:
5c What is crop rotation?
Crop Rotation is the growing of different crops in succession on a piece of land to avoid exhausting the soil and to control weeds, pests, and diseases.
State two advantages of crop rotation
Increases soil fertility
Increases crop yield
Increases soil nutrients
6ai What is population?
Population is a particular section, group, or type of people or animals living in an area or country.
Species is a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
Gametophyte
the haploid male (sperm) and female (egg) sex cells; in plants, formed by mitosis of haploid cells in the gametophyte.
The correct answer is C.
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Food storage and digestion take place inside a food vacuole in the cytoplasm of amoeba.<span> Once digested, it reaches each cell organelle.</span>
Answer:
In this case, it is likely that the polypeptide chain assumed an alpha helix configuration because the lipid bilayer did not have beta-barrel proteins.
Explanation:
A polypeptide chain is naturally polar, however, a lipid bilayer is naturally non-polar. This makes it difficult and even prevents the polypeptide chain from crossing a lipid bilayer, since the composition of these two elements does not allow them to mix. In that case, the polypeptide chain has two options to take to successfully cross the lipid bilayer.
The first option that the polypeptide chain has is to allow the creation of twisted beta sheets in the shape of a closed barrel in its structure. This only works if the lipid bilayer has beta barrel proteins in its composition to act as a transport channel for the polypeptide chain. However, few lipid layers have this protein.
Most likely, the polypeptide chain assumes an alpha helix conformation to cross lipid bilayers that do not have beta-barrel proteins. By assuming the beta conformation, the polypeptide chain reinforces the hydrogen bonds present in its composition, allowing it to cross the lipid bilayer without having its conformation and structure disassembled.