Natural selection<span> is the differential survival and reproduction of individuals due to differences in </span>phenotype<span>. It is a key mechanism of </span>evolution<span>, the change in </span>heritable traits<span> of a </span>population<span> over time. </span>Charles Darwin<span> popularised the term "natural selection", and compared it with </span>artificial selection<span>.</span>
From first to last,
1) Pioneer species like grasses and flowers grow
2) Bushes begin to dominate
3) Trees become common and outcompete other plants for sunlight
4) an intact ecosystem is disrupted by a natural disaster
5) The climax community for the area is established once again
Answer: Option A
Explanation:
Before the mRNA which has been processed from DNA is taken and transported to the ribosomes in the cytoplasm for the translation process, some modifications are made to the mRNA before transport. This includes
1. Capping: addition of 5'-5' phosphate bonds to the 5' terminus of the mRNA. Forms the cap structure that is essentials for binding to ribosomes via special proteins attached to the cap structure
2. Addition of poly(A) tail: a poly(A) addition signal (AAUAAA) is attached to the 3' terminus of the mRNA. They are important in translation initiation and degradation prevention
3. Splicing: this is likely the most remarkable processing in eukaryotes. It involves the removal of intron regions by excision from the present-mRNA and then ligating the exon regions together giving rise to the mRNA.
The type of proteins that can function as the chemical messengers or as the receptors in the plasma membrane is a communication proteins; option A.
Proteins are large macromolecules composed of chains of amino acid units linked together by peptide bonds.
Proteins serve various functions such as:
communication
transport
defensive
enzyme
Communication of proteins such as the hormones can be function as the chemical messengers or as receptors in the plasma membrane.
Proteins are made up of hundreds or the thousands of the smaller units called as amino acids, which are attached to one another in the long chains. There are about 20 different types of amino acids that can be combined to make a protein.
To know more about protein visit:
brainly.com/question/2193769
#SPJ4