Answer:
Alpha-1
Explanation:
Adrenergic receptors are the integral proteins present in the postsynaptic plasma membranes. These receptors are activated when the neurotransmitter norepinephrine and the hormones norepinephrine and epinephrine bind to them. The alpha 1 adrenergic receptors are found in the smooth muscle fibers of blood vessels that serve the salivary glands, skin, and kidneys. These receptors are also found in the radial muscle of iris of the eye as well as in the sphincter muscles of the stomach and urinary bladder.
They exert excitatory effect and lead to contraction of smooth muscles of the blood vessels, dilation of pupil, and closure of sphincters of the bladder.
The correct answer is A.
Secondary growth in plants allows many woody and non woody plants to grow tall and strong. The growth basically occurs in the roots and the stems and it is controlled by lateral meristem. Examples of non woody plants that undergo secondary growth include: carrot, potato, tuber, etc.<span />
Answer:
The product that must be produced to kill a bacterium —which causes a disease— is an antibiotic, which through biotechnology can investigate the structure of the bacterium and synthesize the chemical formula needed to produce antibiotics in high amounts.
Explanation:
Antibiotics are specific medicines for the treatment of infectious diseases, produced by bacteria. <u>Antibiotics can kill bacteria and prevent their replication</u>.
If a disease is produced by bacteria, the product that is necessary to kill those microbes is an antibiotic, for which biotechnology is useful.
By using biotechnology —a branch of biology that uses technology as a research and development tool— it is possible:
- <em>Know the structure, functions and behavior of pathogenic bacterial strains.
</em>
- <em>Create chemical formulas -antibiotics- that serve to effectively eliminate bacteria, and cure infectious diseases.
</em>
- <em>The synthesis and production of antibiotics on a large scale, allowing their sufficient availability for use.</em>
2. The evolutionary process through which new species emerge
