Answer:
TRUE
Explanation:
The answer is TRUE an experiment can be reliable without being valid however, a test cannot be valid unless it is reliable .
The correct answer is "All of the above are correct"
Whole milk is healthier T)(T
_
Answer:
3.
Explanation:
Translation may be defined as the process of formation of protein product from the RNA molecules with the helps of enzymes and translation factors. Translation occurs in 5' to 3' direction.
There are 64 codons that codes for the twenty amino acids. Three codons are referred as stop codons that result in the chain termination of the translation. Three stop codons are UAA, UAG and UGA.
Thus, the correct answer is option (d).
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.
