Explanation:
Many factors can affect the rate of diffusion , including , but not limited to , concentration gradient , size of the particles that are diffusing , and temperature of the systems , diffusion of substances in and out of cells is mediated by the plasma membrane .
Domain genes are stronger than ressive genes.
<h3>What is genes?</h3>
the word gene can have several different meaning if The Mendelian gene is an basic unit of heredity and it is to the molecular gene is a sequence of nucleotides of in DNA that is transcribed to the produce a functional by RNA. There are two types of to the molecular genes: is to the type of protein-coding of the genes and noncoding genes.
When an allele is dominant, the characteristics it is be connected to will be the expressed in an individual. When an allele is recessive, the characteristic it is most connected to is less likely to be expressed. Recessive to the traits only manifest when both alleles are the recessive in an individual.
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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.
The answer should be B the DNA is damaged so new cells grow and create tumors etc.
Answer:
As you age, your brain and nervous system go through natural changes. Your brain and spinal cord lose nerve cells and weight (atrophy). Nerve cells may begin to pass messages more slowly than in the past. Waste products can collect in the brain tissue as nerve cells break down.
Explanation:
