Micro Final Flashcards

(40 cards)

1
Q

Cytotoxic T lymphocyte

A

This cell is an effector cell that has the ability to kill and recognize target cells that are non self

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

memory cells

A

This cell is responsible for enhanced secondary response to an antigen. Produced after clonal selection and differentiation of B cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

B cells

A

become activated when immunoglobulins bind to specific epitope may require helper cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

TH cell

A

helping activated by TCR binding to an antigen and costimulating cytokine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

antibodies

A

proteins that form long complex chains with antigens. tag cells for destruction during phagocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

TH 17 cells

A

responsible for assisting with extracellular bacterial infections

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

TH2 cells

A

known to have a significant role in humoral immunity and defense against helminth infections.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

TH1 cells

A

mediator of immunity for intracellular pathogens and tumors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

This type of immunity is acquired via injection of antibodies from an individual or host that has immunological memory to the specific pathogen or antigen.

A

artificially acquired passive immunity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

This type of immunity is acquired when a person is vaccinated for a specific type of infection via the introduction of antigens. These antigens normally have undergone some type of modification and may not confer the same type of long-lasting memory that would occur with unmodified antigens.

A

Artificially acquired active immunity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are CD4+T cells ?

A

helper cells that bind to the MH2 class molecules on B cells and antigen presenting cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are CD8+ cells?

A

Cytotoxic t cells that bind to MHC class 1 molecules differentiating to effector cytotoxic T lymphocytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The most abundant class of antibodies in serum is

A

igG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

TH2 cells produce cytokines that activate

A

B cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When do helper T-cells develop into TH1 or TH2 cells

A

after proliferation in to a clonal population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

natural killer cells are activated by

A

TH1 cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which receptor on the helper T-cell recognizes the specific antigen from an antigen-presenting cell?

18
Q

Which proteins on the antigen-presenting cell are recognized by the helper T-cell?

19
Q

The antibodies found almost entirely and only on the surface of B cells (not secreted from them), and which always exist as monomers, are

20
Q

What molecule triggers apoptosis

21
Q

The antibodies that bind to parasites are ?

22
Q

What do plasma cells do ?

A

produce antibodies

23
Q

humoral immunity

A

immune response brought on by antibody production

24
Q

The presence of which of the following indicates a current infection rather than a previous infection or vaccination?

25
The antibodies found in mucus, saliva, and tears are
igA
26
phagocyte
a cell that is capable of performing phagocytosis
27
phagocytosis
the ingestion of bacteria or other material by phagocytes
28
gram negative bacteria contain?
LPS, thin peptitoglycan, outer lipid membrane present
29
gram poditive bacteria
Technoic acid thickk peptidoglycan no lipid membrane
30
What is the function topoisomerase and gyrase?
relax the strands
31
helicase
separates the strands
32
What are okaski fragments joined by
DNA ligase
33
DNA Polymerase function ?
removes RNA primers
34
What causes scarlet fever
strep A
35
What is the envelope
lipid bilayer surrounds the nucleocapsid of some animal viruses
36
helical virus
rigid or flexible one big long rod
37
polyhedral virus
has many sides
38
enveloped virus shape ?
spherical
39
inserted DNA in lysogenic cycle is ?
prophage
40