HTH SCI 2CO6 McMaster University Course Planner Details

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Which of the following is an example of a Gram-negative bacterium?

Streptococcus

Listeria

Staphylococcus

Escherichia coli (correct)

In the context of bacteria shapes, which shape is characteristic of Neisseria bacteria?

Spiral shaped

Cocci (correct)

Filamentous

Rods

Which statement best describes the role of penicillins in bacterial infections?

Penicillins are effective against anaerobic bacteria only.

Penicillins are examples of sulfonamides.

Penicillins are broad-spectrum antibiotics targeting bacterial cell walls. (correct)

Penicillins are bacteriostatic and inhibit protein synthesis.

What is the primary action of aminoglycosides in treating bacterial infections?

Inhibit protein synthesis in bacteria Signup and view all the answers

'Normal Flora' or 'Microbiome' refers to...

'Normal Flora' is the same as 'Commensals' within the body. Signup and view all the answers

'Virulence Factors' in bacteria refer to...

'Virulence Factors' increase a bacterium's ability to cause disease. Signup and view all the answers

'Antiphagocytic factors' in bacterial virulence refer to...

'Antiphagocytic factors' help bacteria avoid being engulfed by immune cells. Signup and view all the answers

What is the primary target of Tetracyclines in treating bacterial infections?

Inhibits protein synthesis in bacteria Signup and view all the answers

What is the main characteristic feature of Gram-negative bacteria's cell walls?

High lipid content with periplasmic space Signup and view all the answers

Which family of antibiotics includes drugs like Ciprofloxacin and Levofloxacin?

Fluroquinolones Signup and view all the answers

What is the primary mechanism of action of sulfonamides in bacterial infections?

Inhibit folic acid pathway in bacteria Signup and view all the answers

How many In-person Grand Rounds must a student participate in over the term?

6 Signup and view all the answers

What is the main focus of the Online Quizzes on A2L?

Practical applications Signup and view all the answers

Which antibiotic is known for its activity against Gram-positive cocci and is commonly used for the treatment of MRSA infections?

Linezolid Signup and view all the answers

Among the following, which antibiotic exhibits activity against both Gram-positive and Gram-negative bacteria?

Carbapenems Signup and view all the answers

Which antibiotic combination is specifically designed to overcome beta-lactamase resistance mechanisms in bacteria?

Tazobactam and Clavulanate Signup and view all the answers

In the context of medically important viruses, which virus type has a genome consisting of single-stranded RNA enclosed in an icosahedral capsid?

Single Stranded RNA Icosahedral Virus Signup and view all the answers

What is the key difference between pathophysiology and pathogenesis in the context of diseases?

Pathophysiology examines physiological responses to diseases, while pathogenesis studies the sequence of events in disease development. Signup and view all the answers

Which bacterial shape is NOT correctly matched with its respective bacterium?

Cocci - Listeria Signup and view all the answers

What is the primary characteristic feature of Gram-positive bacteria's cell walls?

Vulnerability to lysozyme and penicillin attack Signup and view all the answers

Which bacterium is classified as an obligate intracellular parasite according to the provided text?

Rickettsia Signup and view all the answers

What enzyme is targeted by Penicillins in treating bacterial infections?

Transpeptidase Signup and view all the answers

Which antibiotic family is commonly used for individuals allergic to penicillin?

Macrolides Signup and view all the answers

What is the primary action of Aminoglycosides on bacterial infections?

Inhibits protein synthesis Signup and view all the answers

Which bacterium is commonly associated with causing stomach ulcers?

Helicobacter pylori Signup and view all the answers

What is the main distinction between Gram-negative and Gram-positive bacteria in terms of oxygen tolerance?

Gram-negative bacteria are resistant to oxygen-dependent antibiotics, while Gram-positive bacteria are not. Signup and view all the answers

Which bacterium is characterized by lacking a cell wall according to the text?

Mycoplasma Signup and view all the answers