Answer:
D. Control the blood flow into the capillary bed
Explanation:
The degree of filling of the capillary bed and level of arterial pressure within the vascular system is determined mainly by the degree of tonus (firmness) in the smooth muscle of the arterial wall. Arterioles have relatively narrow lumina, thick muscular wall and precapillary sphincter.
All living things are made up of cells. Cells is the most basic unit of life. And cells must come from preexisting cells. Rudolph Virchow, Theodore Schwan, and Matthias Schelieden. Hope this helps.
The statement that correctly describes the relationship between biodiversity and sustainability is, biodiversity increases while sustainability decreases with an increase in the number of species in an ecosystem.
<h3>What do you mean by Biodiversity?</h3>
Biodiversity may be defined as the sum total of all the living organisms living in a particular ecosystem.
As the number of species increases, biodiversity also increases because both are directly proportional to one another.
While the species enhancement negatively impacts the sustainability of the environment.
Therefore, the statement that correctly describes the relationship between biodiversity and sustainability is, biodiversity increases while sustainability decreases with an increase in the number of species in an ecosystem.
To learn more about Biodiversity, refer to the link:
brainly.com/question/11542363
<h2>Inbreeding </h2>
Explanation:
Inbreeding is defined as the formation of offspring which results from the mating of two closely related organisms
Inbreeding affects allele frequencies and genotype frequencies in a population in following ways:
- Inbreeding increases homozygosity
which in turn decreases the biological fitness of a population because there are chances that offsprings will be affected by deleterious traits in this case
- Inbreeding itself does not cause evolution, because allele frequencies do not change in the population as a whole
<span>If rna polymerase is missing sigma then transcription initiation would not occur but elongation could.</span>
