Answer:
They are effective for long periods of time
Explanation:
Alpha and Beta interferons are part or form of Interferons. The Alpha interferons is derived from leukocytes infected with virus, while the Beta is derived from fibroblasts infected with virus.
Both of them have various mechanism of action including:
1. they bind to the surface of uninfected cells.
2. they initiate manufacture of antiviral proteins.
3. they disrupt stages of viral multiplication.
4. they initiate transcription.
Hence, in this case, the correct answer is "they are effective for long periods" because they are not.
Answer:
A. Organ.
Explanation:
Cells make up
tissues, tissues make up an organ. Organs make organ system
The Xylem is the vascular tissue that moves water up the plant. Phloem is the vascular tissue that moves food up or down the plant.
True
False I think it is true
1500 golden toads are reported, its breed at the site since 1972, the last documental breeding of the toad are few in number.
<u>Explanation:</u>
When the dry seasons ended and the forest become wetter, then the males toads are gathered in the group of large numbers near the ground and wait for the females.
All the golden toads are live in the same places with the all microorganisms. The surrounding community, has the environment in which golden toad is diversed and get extinct.