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