Frage 1
Frage
Which of the following is NOT a general shape/structure of bacteria and microbes?
Antworten
-
Cocci (spherical)
-
Bacilli (rod shaped)
-
Sarcodina (circular)
-
Spirochetes (helical)
Frage 2
Frage
Which of the following is a property of gram positive (G+) cell walls?
Antworten
-
They have two layers.
-
They have a thick peptidoglycan layer.
-
They have a periplasmic space.
-
The outer wall contains Lipid A.
Frage 3
Frage
Which of the following is true about gram negative (-) cell walls?
Antworten
-
They have a periplasmic space.
-
They contain peptidoglycan.
-
They only have 1 layer that is very thick.
-
They contain teichoic acid.
Frage 4
Frage
How do bacteria attach to host cells?
Antworten
-
Microvilli
-
Sticky enzymes
-
Pili
Frage 5
Frage
Which of the following can grow with or without oxygen?
Antworten
-
Obligate aerobes
-
Obligate anaerobes
-
Facultative anaerobes
-
Facultative aerobes
Frage 6
Frage
Which of the following is true about toxins?
Antworten
-
There are 220 known bacterial toxins and they fall under two groups: exotoxins and endotoxins.
-
Toxins are poisonous substances produced by microorganisms.
-
40% of toxins cause disease by damaging the Eukaryotic cell membrane.
-
All of the above are true.
Frage 7
Frage
Which of the following exotoxins interefere with normal nerve impulses?
Antworten
-
Cytotoxins
-
Neurotoxins
-
Enterotoxins
Frage 8
Frage
Endotoxins are part of the outer cell wall of Gram (-) bacteria.
Frage 9
Frage
Which of the following is true about bacteria cells?
Frage 10
Frage
Which of the following is true about fungi?
Antworten
-
They are insensitive to antibiotics.
-
They are prokaryotic.
-
They have peptidoglycan in their cell wall.
-
They do not contain sterols.
Frage 11
Frage
Which of the following plasma membranes contains ergosterol?
Frage 12
Frage
Which of the following is a mycelial form of dimorphic fungi?
Antworten
-
Parasitic form
-
Saprophytic form
-
Tissue form
Frage 13
Frage
Systemic fungal infectious agents are found in the skin, hair, and nails. They rarely invade deeper tissue. They are also called dermatophytes.
Frage 14
Frage
Proteinaceous infectious particles are:
Antworten
-
prions
-
viruses
-
bacteria
-
parasite
Frage 15
Frage
Which of the following is FALSE about common virus structures?
Antworten
-
Contain a viral genome of RNA or DNA
-
Contain a capsid
-
Genome is double stranded or single stranded
-
All of the above are true.
Frage 16
Frage
In which cycle is the viral genome integrated into the host?
Antworten
-
Lytic cycle
-
Lysogenic cycle
-
Latent cycle
Frage 17
Frage
Which of the following pathways do retroviruses use?
Frage 18
Frage
Which of the following is NOT a type of parasite (main classifications)?
Antworten
-
Protozoan
-
Trophozoite
-
Helminthe
-
Exoparasite
Frage 19
Frage
Which of the following is the active, free swimming stage of the protozoan?
Antworten
-
Trophozoite
-
Cyst
-
Flagellate
Frage 20
Frage
Which of the following protozoans are incorrectly matched:
Frage 21
Frage
Which of the following hleminthes is associated with eating raw or undercooked meat of animals infected with its larvae?
Antworten
-
Trematodes
-
Cestodes
-
Nematodes
Frage 22
Frage
Which of the following helminthes is associated with infection caused by ingestion of eggs shed in the feces of a human tapeworm carrier?
Antworten
-
Trematodes
-
Cestodes
-
Nematodes
Frage 23
Frage
Which of the following helminthes is associated with blood flukes that target organs that are fed by blood?
Antworten
-
Trematodes
-
Cestodes
-
Nematodes
Frage 24
Frage
Which of the following is NOT a possible effect of an antimicrobial drug?
Antworten
-
Interruption of cell membrane structure/function
-
Inhibition of protein synthesis
-
Inhibition of nucleus formation
-
Interference with nucleic acid metabolism
Frage 25
Antworten
-
The degree of pathogenicity
-
The relative ability of a microorganism to cause disease
-
How capsules, toxins, enzymes, cell wall receptors, and pilli allow pathogens to evade or overcome host defenses
-
All of the above.
Frage 26
Frage
Which of the following is NOT a static defense (non-inflammatory reaction) of the body?
Antworten
-
Skin
-
gastric pH
-
saliva
-
phagocytes
Frage 27
Frage
Which of the following is NOT true about the local inflammation response?
Antworten
-
It is the second stage of the innate system.
-
Phagocytes respond to peptidoglycan and mannose.
-
Migration of phagocytes and plasma proteins to infected tissues occurs.
-
Maturation of WBCs occurs.
Frage 28
Frage
Which of the following cells recognize antigens on the surface of a virus-infected cell and bind to the cell to destroy it?
Frage 29
Frage
MHC1 attached to CD8 cytotoxic T cells.
Frage 30
Frage
Which of the following is true about B lymphocytes?
Antworten
-
They are formed in the thymus and undergo development in the bone marrow.
-
They are formed in the bone marrow and undergo development in the bone marrow.
-
They are formed in both the thymus and the bone marrow and undergo development in the blood.
Frage 31
Frage
Which of the following is NOT true about T lymphocytes?
Antworten
-
T-lymphocytes migrate from the thymus to enter the bone marrow.
-
In the outer cortex of the thymus, T lymphocytes acquire specific receptors (TCRs) which commits it to a single antigen specificity.
-
T lymphocytes respond by proliferation and production of a clone of cells (clonal selection).
-
T lymphocytes differentiate to express CD3, CD4 and CD8 receptors.
Frage 32
Frage
T lymphocytes can become which of the following:
Antworten
-
CD4+ (helper T cells)
-
CD8+ (killer T cells)
-
Cytotoxic cells
-
All of the above.
Frage 33
Frage
T lymphocytes can become which of the following:
Antworten
-
CD4+ (helper T cells)
-
CD8+ (killer T cells)
-
Cytotoxic cells
-
All of the above.
Frage 34
Frage
Which of the following does a B lymphocyte NOT do when encountering an appropriate antigen?
Antworten
-
Interact with antigenic epitopes.
-
Develop in plasma cells, secreting large amount of antibody.
-
Circulate as memory cells.
-
Hide antigenic peptides from T cells.
Frage 35
Frage
Which of the following immunoglobulin types works on parasites?
Frage 36
Frage
Which of the following is true about innate immunity?
Antworten
-
Action requires days to develop.
-
Contains macrophages, granulocytes, natural killer cells, complements, HCl, lysozymes.
-
Response is specific.
-
Contains T cells and B cells.
Frage 37
Frage
Which of the following is true about the adaptive immunity response?
Frage 38
Frage
Which of the following is NOT true about naturally passive acquired immunity?
Antworten
-
It is a short term immunization.
-
It is not produced by the host.
-
The antibodies are passed through the placenta to the fetus.
Frage 39
Frage
Which of the following is an example of natural active acquired immunity?
Frage 40
Frage
A small molecule that can elicit an immune response only when attached to a large carrier (like a protein) is:
Antworten
-
Immugen
-
Antigen
-
Pathogen
-
Hapten
Frage 41
Frage
Which of the following is not a main role of a complement?