ANATOMY AND PHYSIOLOGY LAB BSC2347/L Micro Lecture Quiz mod 5 (100% Correct Solutions)

• Question 1 Mannitol salt agar is used to select strains of staphylococci from streptococci and enterococci within the sample. Selected Answer: True Answers: True Fals e • Question 2 f unction in humoral immunity, while function in cell-mediated immunity. Selected Answer: B cells, T cells Answers: B cells, T cells T cells, B cells B cells, neutrophils Basophils, T cells Monocytes, basophils • Question 3 The specificity of an antibody is due to Selected Answer: The variable portions of the H and L chains. Answers: The constant portions of the H and L chains. The L chains. The variable portions of the H and L chains. Its valence. The H chains. • Question 4 A vaccine that contains a protein conjugated to a capsule polysaccharide is called Selected Answer: Conjugate Answers: Acellular Attenuated Conjugate Subunit • Question 5 Congenital infections in newborns can happen at any time during the pregnancy up through the time of delivery. Selected Answer: True Answers: True Fals e • Question 6 All of the following are methods that can be used to isolate bacteria from a mixed culture EXCEPT Selected Answer: Gram staining Answers: Streak plating Loop dilution pour plating Gram staining Serial dilution followed by spread plating • Question 7 Which type of white blood cells are particularly attracted to sites of parasitic worm infections? Selected Answer: Answers: Eosinophils Eosinophils Monocytes Basophils Neutrophils Lymphocytes • Question 8 Pollen is which type of allergen? Selected Answer: Inhalant Answers: Contactant Ingestant Injectant Inhalant • Question 9 are molecules that stimulate a response by T and B cells. Selected Answer: Antigens Answers: Antibodies Antigens Interferons Platelets • Question 10 What do plasma cells do? Selected Answer: Secrete antibody Answers: Function in allergic reactions Directly destroy target cells Suppress immune reactions Activate B cells and other T cells using cytokines Secrete antibody • Question 11 Perinatal infections include all the following EXCEPT Selected Answer: West Nile Virus Answers: Chlamydial pneumonia Cytomegalovirus Zika virus HIV West Nile Virus • Question 12 The test involves using rabbit plasma as a reagent and its results are determined by observation of thickening of the medium. Selected Answer: Coagulase Answers: Catalase Oxidase Coagulase Peroxidase • Question 13 Most antiviral drugs function by all but which of the following Selected Answer: barring penetration of the virus into the host cell Answers: barring penetration of the virus into the host cell blocking the transcription and translation of viral molecules Preventing the maturation of viral particles disrupting viral metabolism • Question 14 Antigen-presenting cells Selected Answer: Answers: All the choices are correct. Engulf and modify antigen to be more immunogenic. Hold and present processed antigen on their cell membrane surface. Include macrophages. All the choices are correct. Include dendritic cells. • Question 15 The high salt content in a mannitol salt agar plate helps to separate from and in a mixed sample. Selected Answer: Answers: Streptococcus pyogenes; Streptococcus agalactiae; Staphylococcus aureus staphylococci; streptococci; enterococci streptococci; staphylococci; enterococci enterococci; streptococci; staphylococci Streptococcus pyogenes; Streptococcus agalactiae; Staphylococcus aureus • Question 16 Which describes the innate immune response? Selected Answer: involves granulocytes, agranulocytes, chemical and physical defenses Answers: involves granulocytes, agranulocytes, chemical and physical defenses highly specific defense with memory involves antibodies produced by B lymphocyte cells active against specific antigens • Question 17 The least numerous of all white blood cells that release histamine during inflammation and allergic reactions are Selected Answer: Basophils. Answers: Monocytes. Basophils. Lymphocytes. Eosinophils. Neutrophils. • Question 18 Infections that are more common during pregnancy include all the following EXCEPT Selected Answer: Syphilis Answers: Malaria Urinary tract infections Candidiasis Poliomyelitis Syphilis • Question 19 A vaccine that contains parts of viruses is called Selected Answer: Attenuated Answers: Acellular Recombinant Subunit Attenuated • Question 20 A vaccine that contains microbes that have been treated with chemicals, radiation, heat, or some other method that does not destroy the organism but doesn’t let it replicate is called Selected Answer: Inactivated Answers: Inactivated Attenuated Toxoid Conjugate • Question 21 The coagulase test is used to differentiate from coagulase-negative bacteria. Selected Answer: Staphylococcus aureus Answers: Streptococcus pyogenes Staphylococcus aureus Enterobacter faecalis Staphylococcus epidermis • Question 22 A vaccine that contains living, non-virulent strains of a microbe is called Selected Answer: Attenuated Answers: Acellular Attenuated Inactivated Toxoid • Question 23 Which test utilizes hydrogen peroxide and the observation of gas bubble formation when attempting to identify an unknown bacterium? Selected Answer: Catalase test Answers: Bile esculin hydrolysis Coagulase test Oxidase test Catalase test • Question 24 Once a microbe has entered a host, what process performed by certain white blood cells will attempt to destroy the microbes? Selected Answer: Answers: Phagocytosis Exocytosis Phagocytosis Encapsulation Adhesion Margination • Question 25 A “halo” or partial clearing around a colony of bacteria on a blood agar plate is referred to as hemolysis. Selected Answer: Beta Answers: Alpha Beta Gamma Delta Show Less