Answer: Option A) receiving; sending
Explanation:
The neuron is made up of many parts, they include:
- dendrites, which are branched and helps in receiving impulses from the adjacent neuron
- axon, a long and extended portion of the neuron that the transmission of impulses along its length away from the cell body.
- synapse etc
Thus, dendrites of neurons is involved in receiving impulses into the neuron, while axons is involved in sending impulses away from the neurons
Answer:
The correct answer is A bacteriophages inject only DNA into the bacteria.
Explanation:
Bacteriophages are a specific type of virus that infect bacteria.During the course of infection bacteriophage releases an enzyme known as lysozyme which creates a hole in the cell wall of the bacteria.
After doing that(creating a hole) bacteriophage inject its DNA inside the bacterium.
The injected DNA undergo gene expression by utilizing the gene expression machinery of bacteria which ultimately result in the formation of coat protein.The DNA is then packed within the coat protein to form progeny phages.The progeny phages then disrupt the cell wall and get released from the bacterium in search of a new host.
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Answer: A. Zidovudine (Retrovir) and emtricitabine (Emtriva)
Explanation:
Basic postexposure prophylaxis (PEP) therapy typically includes treatment with one of these combinations of pharmacologic agents:
Zidovudine (Retrovir) and emtricitabine Emtriva),
Lamivudine (Epivir) and tenofovir (Viread), or
Tenofovir (Viread) and emtricitabine (Emtriva)
If the accidental exposure is especially severe, a third agent may be included.
