Answer: an active virus has explicit symptoms that you know wich one it is and it is constantly waring out your body as a hidden virus is descreet and attacks randomly
Explanation:
Answer:
Option c (No, T cells left from the previous infection can kill any virus.
)
Explanation:
When ever viral infection occur, body's immune system start to fight against it by activating B-cells and T-cells.
B-cells produce antibodies that bind with virus and act as label. This label indicate virus as foreign substance. Hence T-cells recognize it and kill it. Furthermore, B-cells form memory cell that keep the viral memory. if this viral infection occur again in future, T-cell recognize it and eliminate the virus.This mechanism is called immunity.
The fertility doctor can help couple conceive by the use of fertility drugs.
<h3>What are fertility drugs?</h3>
Fertility drugs are those drugs that are used to restore fertility in individuals that have infertility problems.
The procedure that can be used by a fertility doctor to help a couple to conceive include the following:
- The use of fertility drugs such as Clomiphene (Clomid)
- Intrauterine insemination (IUI)
- in vitro fertilization (IVF).
In order to use fertility drugs such as Clomiphene (Clomid) effectively, the procedure include the following:
- The starting dosage of Clomiphene is 50 milligrams a day for 5 days.
- The pill should be taken the third, fourth, or fifth day after you start your period.
- The therapeutic effect of the drug is expected to take place about 7 days after you've taken the last dose.
- Most pregnancies happen within three cycles of ovulation.
Therefore, the fertility doctor can help couple conceive by the use of fertility drugs.
Learn more about fertility here:
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<u>Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the high energy carrier NADPH.</u>
