This is biomedical assignment. 1. B cells need T cells, but T cells do not need

Question

This is biomedical assignment.

1. B cells need T cells, but T cells do not need B cells. (True or False)

2. _______________ produces antibodies in the future ("stands on the sidelines").

Memory B cells

Natural killer cells

Antibody B cells

Plasma B cells

Helper T cells

3. Phagocytic leukocytes and fever are a part of ______________.

physical barriers to entry

antibody mediated immunity

chemical barriers to entry

innate immunity

cell mediated immunity

4. Place the following in order from smallest to LARGEST:

prokaryotic cell, eukaryotic cell, virus

prokaryotic cell < eukaryotic cell < virus

virus < prokaryotic cell < eukaryotic cell

virus < eukaryotic cell < prokaryotic cell

eukaryotic cell < prokaryotic cell < virus

5. The function of this leukocyte is to induce apoptosis using perforin and granzyme.

Helper T cell

Memory T cell

natural killer cell

cytotoxic T cell

6. Lysozyme and pH are a part of your ____________.

chemical barriers to entry

antibody mediated immunity

physical barriers to entry

innate immunity

cell mediated immunity

7. The first step in an inflammatory response is _______________.

neutrophils & macrophages respond to pathogens marked by complement proteins

histamine causes vasodilation and cytokines signal for more leukocytes

phagocytosis of pathogen

invasion by a pathogen

basophils & mast cells release histamine and cytokines

8. Another term for an antibody is ___________________.

Antigen

B cell

T cell

Immunoglobulin

9. Antibody mediated immunity is most effective against ______________.

Pathogens prior to cell entry

Allergens

Pathogens after entry into a cell

Tumor cells

Memory B cells

Natural killer cells

Antibody B cells

Plasma B cells

Helper T cells

Explanation / Answer

1. Yes it's true because B cells can't encounterthe virus and bacteria without the help of T cell cell which provides the chemical signal to B cell.

2. Memory B cells produces antibody in the future. When first time any invader attacks the human body, they release some chemical and these chemical behave as a ligands which binds with B cell receptor , native B cell digest it by the process of endocytosis but also make some memory B cell for future attacking.

3. Phagocytic leukocytes and fever are a part of cell mediated immunity in which no antibodies required.

4.Viruses< prokaryotes<eukaryotes

Viruses size is, in range between 20- 400 nanometer and prokayotes size range in between 0.1-5.0 uM wheareas eukaroyotes cell size range in between 10- 100 uM.

4.

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