MICRO PARA MIDTERM - SET 3

What is the primary distinction between gram-positive and gram-negative bacteria based on their cell wall structure?

• Gram-negative bacteria have teichoic acids

• Gram-positive bacteria have a thick peptidoglycan layer

• Gram-negative bacteria have a thick peptidoglycan layer

• Gram-positive bacteria have an outer membrane

Which of the following ways can't classify bacteria?

• Bacteria can be classified by their appearance

• Bacteria can be classified by their size

• Bacteria are classified by their genetic material

• Bacteria can be classified by their metabolic properties

What is the function of the Gram stain in bacterial classification?

• To classify bacteria based on their shape

• To distinguish between two major classes of bacteria

• To determine the size of bacteria

• To identify the metabolic properties of bacteria

Which of the following bacteria is classified as a coccus?

• Bacillus anthracis

• Staphylococcus aureus

• Clostridium tetani

• Escherichia coli

What is the role of fimbriae in bacteria?

• To protect against antibiotics

• To form spores

• To aid in adherence to surfaces

• To provide motility

What is the primary component of the cell wall in gram-positive bacteria?

• Peptidoglycan

• Lipopolysaccharides

• Proteins

• Phospholipids

Which of the following processes occurs during bacterial replication?

• Bacteria replicate their DNA and divide

• Bacteria undergo meiosis

• Bacteria only replicate their RNA

• Bacteria do not replicate

What is the main purpose of bacterial spores?

• To provide resistance to harsh conditions

• To aid in reproduction

• To facilitate nutrient absorption

• To enhance motility

Which of the following is a method of genetic transfer in bacteria?

• Mitosis

• Conjugation

• Meiosis

• Binary fission

What is the primary function of plasmids in bacteria?

• To provide genetic diversity

• To aid in cell division

• To confer antibiotic resistance

• To store energy