Explanation:
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es la ciencia que estudia el origen, la evolución y la característica
Answer: HIV & related viruses such as HTLV possess unusual virally encoded reverse transcriptase enzyme.
Reverse transcriptase is an enzyme which synthesizes a complementary DNA or cDNA from a RNA template strand. The process of reverse transcription is used by the retroviruses for replicating their genome and proliferating within the host genome. The HIV uses reverse transcriptase to infect humans. Without the reverse transcriptase enzyme the genome of the virus cannot incorporate into the host cell and will fail to replicate. HTLV or human T-lymphotropic virus or HTLV also uses the same mechanism with the enzyme reverse transcriptase.
Answer: Active transport
Explanation:
Active transport can be defined as the process by which the molecules are transported against the concentration gradient by the help of energy.
The hormones like insulin are also transported by this process so that the hormone can reach to the place where it is required.
This is an energy consuming process because of sizeof molecule and the opposite of the concentration gradient.
