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Answer:
a. True
Explanation:
AZT is an abbreviation for azidothymidine and it is the first effective drug against the human immunodeficiency virus (HIV). Thus, azidothymidine is considered to be the first anti-retroviral drug used for the prevention and treatment of the human immunodeficiency virus (HIV).
AZT works by interfering with HIV's production of offspring inside a host cell. It does so by interacting with a molecule called reverse transcriptase.
Basically, the shape and composition of the reverse transcriptase plays a significant role in the interaction. Therefore, this anti-retroviral drug known as AZT may not work effectively if the shape and composition of the reverse transcriptase changes.
Furthermore, the high mutation or replication rate of the human immunodeficiency virus (HIV) owing to its enormous genetic diversity has made it extremely difficult to develop an effective and accurate vaccine against the virus.
<em>Hence, the human immunodeficiency virus (HIV) possesses a high error rate. </em>
Answer:
Changes this rock into sedimentary rocks.
Explanation:
Igneous rock is formed when molten hot magma cools down and form sediments. Igneous rock can change I sedimentary rock by deposition, weathering and erosion because sedimentary rocks are rocks formed near the Earth surface and are formed from the accumulation of sediments when the are deposited out of air, ice, gravity, flowing water.
They are formed through weathering of rocks i.e the breakdown of rocks into smaller particles which can be wash away by a process called erosion through either water, wind or air and the erosion lead to deposition or accumulation of this small particles which form sedimentary rocks.
Examples of sedimentary rocks are sandstone, siltstone e t.c.
