Explain why cytotoxic t cells are not affective against bacteria.

Because cytotoxic T cells are activated with antigens.

Explanation:

Cytotoxic T cells are a type of white blood cell that expresses T-cell receptors that can recognize specific antigens to then be activated by them to neutralize an infected cell, antigens are structures that can stimulate an immune response, they are presented by the cells so T cells can identify them.

So, based on the previous information, cytotoxic T cells can't recognize or attack bacterias if their T cell receptors don't have an antigen presented by another cell to bind.

I hope this information clarifies your doubts!

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle