Answer:
A. whether the glycoproteins or capsid proteins on its surface recognize those of the host cells.
Explanation:
Virus has different surface proteins that are recognized by the receptors present on its host cell. The range of a virus is determined by the recognition of these proteins by the host cell.
The interaction between the receptor on the host cell and surface proteins on the viral capsid is important for viral genome entry in the host cell and to determine the range of the host cells.
If the surface protein of the virus is not able to bind to the receptor on any cell then the virus can not infect the cell. For example, the HIV virus infects only those cell which have CD4 receptors. So the right answer is A.
Answer:umm what y need help with ???
Explanation:
Biogeochemical cycles are important because they regulate the elements necessary for life on earth by cycling them through biological and physical aspects of the word.
Answer:
a cat's leg, and a human arm are considered homologous structures.
Explanation:
same joints
muscles are in the same places
The organs forming the male duct system as listed from the male gonad to the body exterior are;
Epididymis = Vas deferens = Urethra
Epididymis is a tube located at the back of the testicles that stores and carries sperm. Vas deferens transports sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation. The urethra carries urine from the bladder to outside of the body. Additionally, it has function of ejaculating semen when the man reaches orgasm.
