Answer:
a virus, because it requires a host cell to reproduce
Explanation:
- a bacterium, because it is contagious
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a fungus, because it infects livestock
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a protist, because it is microscopic
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a virus, because it requires a host cell to reproduce
The correct answer would be <u>a virus because a virus is the only microbe that cannot reproduce on its own without a host</u>. A virus utilizes the genetic mechanism of its host to reproduce either lytically or lysogenically.
<u>In lytic cycle</u>, the virus utilizes the genome system of the host to produce more viruses that eventually leave or lyses the host to become independent viral particles, killing the host in the process.
<u>In lysogenic cycle</u>, the virus inserts its genome into that of the host and uses the host's replication machinery to replicate its genome. The virus then waits for the defense mechanism of the host to become weakened before multiplying and lysing the host.
Upwelling waters occur when the warm water, on the surface of the oceans in the equatorial regions are pushed towards the poles by winds and the denser cold currents on the ocean bottom move up to replace the displaced waters. The denser currents are usually nutrient-filled and are an ideal substrate for growth of phytoplankton as they warm up on the surface. The algae bloom attracts fish and other producers in the sea. The producers consequently attract other carnivorous fish.
In the pulmonary circuit, veins carry oxygen rich blood, and in the systemic circuit, veins carry oxygen poor blood.
<h3>
Pulmonary and Systemic Circuit of the Cardiovascular system</h3>
The Cardiovascular System concerns all relations and interaction with the heart . It consists of
- Systemic circuit
- Pulmonary Circuit
The Systemic circuit is responsible for carrying oxygenated blood away from the heart and pumps it towards the organs and tissues of the body and returns it to back to the heart as deoxygenated blood
While the Pulmonary Circuit carries deoxygenated blood away from the heart towards the lungs and also brings it back as oxygenated blood to the heart again.
Read more on the Pulmonary and Systemic Circuit here: brainly.com/question/9705408
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