sperm cells
viruses: Human Pampiloma Virus, Tobacco Mosaic Virus, Human Immunodeficiency Virus Bacteria: Escherichia Coli, Bacillus Megaterium, Staphylococcus Aureus
They are not playing hide and seek game.They infect the human cells to spread themselves. This cause disease in human.
HIV, the human immuno-deficiency virus, does not infect nerve cells, it infects white blood cells. (false)
The common cold in humans is caused by rhinovirus, which is pretty specific to humans. There are other strains of rhinovirus that infect dogs, but those strains don't infect humans. The barrier for this is the type of protein on the surface of the cells of the upper respiratory tract - there are different proteins on human cells than there are on canine cells. The virus is very well adapted to only one species, so a human-adapted rhinovirus can only infect humans while a canine-adapted rhinovirus can only infect dogs.
NO because it's tail fibers will allow it to land only on certain a kind of bacteria and not on human cells.
the ants getting resistance to DDT while the humans not getting resistance to tobacco? the ants getting resistance to DDT while the humans not getting resistance to tobacco- why
No, HIV primarily infects and targets cells of the immune system, specifically CD4 T cells. However, it can indirectly impact the nervous system by causing inflammation and affecting immune function, leading to HIV-associated neurological complications.
because they want to make more of their kind
Polio virus can infect only human being. Like other viruses, polio virus infect the cells. After getting attached to the cell, the virus genome is inserted into the cell body. The genetic material of the host is broken into small fragments and assembled as per the genome of the polio virus. Multiple such copies are formed and then released in the body to infect the new cells.
HIV primarily infects CD4+ T cells, which are a type of white blood cell that plays a key role in the immune system. Additionally, the virus can also infect macrophages, another type of immune cell that helps protect the body against infections.
Yes the cat may give the human worms