Question

the lymphocytes that are responsible for monitoring the events that occur within the body’s cells are which type of cell?
h cell
b cell
a cell
t cell

the term______ refers to the speed and intensity with which a pathogen is likely to cause an infection.
sequelae
vector
virulence
susceptibility

which of the following statements regarding bacteria and viruses is false?
viruses are able to replicate on their own.
there are more different types of viruses than of all other organisms.
bacteria may live in or on a host in a mutually beneficial way.
bacteria can be found in almost all environments.

Explanation:

First Question (Lymphocytes Monitoring Body Cells)

T cells (specifically cytotoxic T cells or T - lymphocytes) are responsible for monitoring events within the body's cells, such as detecting infected or cancerous cells. H cells are not a recognized type of lymphocyte for this function. B cells are mainly involved in humoral immunity (producing antibodies) and not in monitoring intracellular events. A cell is not a standard type of lymphocyte related to this function.

• Sequelae refers to the after - effects of a disease, not the speed/intensity of infection.
• Vector is an organism that transmits a pathogen, not related to the pathogen's infection - causing speed/intensity.
• Virulence is defined as the speed and intensity with which a pathogen is likely to cause an infection.
• Susceptibility refers to the host's likelihood of getting infected, not the pathogen's ability to cause infection.

• Viruses are not able to replicate on their own. They need a host cell's machinery to replicate.
• It is true that there are more different types of viruses than of all other organisms.
• Bacteria can have mutualistic relationships with hosts (e.g., gut bacteria).
• Bacteria are highly adaptable and can be found in almost all environments.

Answer:

D. T cell

Second Question (Term for Pathogen's Infection Potential)