Answer:
The pathogen replicates without using host cells replication machinery, and it is directly transmitted
Explanation:
We could infer that the disease is caused by bacteria, as we know that it can be cured by using <u>antibiotics</u>. Antibiotic a group of drugs capable of destroying bacterias or inhibit their growth.
Bacterias have many different ways of propagating, one of them is by contact:
- Direct contact: This occurs when people touch or kiss a sick person, or there is an interchange of liquids and corporal fluids (such as sweat or blood) between the healthy person and the sick person.
- Indirect contact: the transmission occurs through an object.
Bacterias do not need any other living being to reproduce and they are able to survive under extreme conditions. Bacteria do not need any host to replicate.
In the exposed example, the disease is cured by using antibiotics, and its transmission is by direct contact, such as handshaking or touching.
Answer:
The correct answer is - increase: constriction of the arterioles.
Explanation:
When the physical activity is decreased by the tissues of the muscle, the oxygen concentration in the tissue increases which leads to the constriction of the arterioles.
It takes place in order to decrease blood flow and blood pressure as oxygen requirement is less in the tissue in decreased physical metabolic activity. The constriction of arterioles results in more resistance to decrease the blood flow in capillaries.
Answer:
d) It binds to intracellular receptor.
Explanation:
Nitric oxide is a compound produced by many cells of the body. It relaxes vascular smooth muscle by binding to the heme moiety of cytosolic guanylate cyclase(intracellular receptor) ,activating guanylate cyclase and increasing intracellular levels of cyclic-guanosine 3',5'-monophosphate, which then leads to vasodilation.
