Free Kingdom Prokaryotae MCQs with Answers

• A. Glycolipids
• B. Glycoproteins
• C. Lipoproteins
• D. Peptidoglycan

Explanation: Bacterial cell walls are made of peptidoglycan, also called as murein, which is made from polysaccharide chains cross-linked by unusual…

• A. Flagella
• B. Pilli
• C. Cilia
• D. Microtubules

Explanation: "The explanation for this question will be added soon!".

• A. Archaeobacteria
• B. Eubacteria
• C. Mycoplasma
• D. Cyanobateria

Explanation: Mycoplasmas are a group of bacteria that are characterized by their lack of a cell wall, which makes them unique among bacteria.

• A. Oxidation of proteins
• B. Coagulation of proteins
• C. Degeneration of nucleic acids
• D. Bursting up of cells

Explanation: Moist heat can cause the coagulation or denaturation of proteins. When proteins are exposed to high temperatures, their three-dimensional…

• A. 0.5-1.5
• B. 2.0-4.0
• C. 1.1-1.6
• D. 2.0-6.0

Explanation: The diameter of E. coli falls within the range of 1.1 to 1.5 micrometers. E.

• A. Antisepsis
• B. Disinfection
• C. Disinfestation
• D. Chemotherapy

Explanation: Antisepsis refers to the process of killing or inhibiting the growth of microorganisms, particularly bacteria, on living surfaces such as…

• A. Lipids
• B. Peptidoglycan
• C. Teichoic acid
• D. Lipoteichoic acid

Explanation: "The explanation for this question will be added soon!".

• A. Nucleoid
• B. Nucleus
• C. Mitochondria
• D. Mesosome

Explanation: The DNA of bacteria is present in the nucleoid. The nucleoid is a distinct region within the bacterial cell where the genetic material…

• A. Bacterial diseases
• B. Allergies
• C. Viral Diseases
• D. Bacterial and Viral Diseases

Explanation: Antibiotics are medications that are used to treat bacterial infections. They work by killing or preventing the growth of bacteria.

• A. Slime
• B. Plasmid
• C. Capsule
• D. Pili

Explanation: Plasmids can be responsible for drug resistance in bacteria. Plasmids are small, circular pieces of DNA that can be found in bacteria.

• A. Cell wall
• B. Cell membrane
• C. Ribosomes
• D. Capsule

Explanation: The capsule is an outer wrapping or envelope found in certain bacterial cells but missing in others.

• A. Size
• B. Size as well as in shape
• C. Shape
• D. Cell type

Explanation: Bacteria vary in both size and shape. Size ranges from microscopic, such as 0.5 to 5 micrometers, and shape can be diverse, including…

• A. Square
• B. Vibrio
• C. Spirillum
• D. Spirochete

Explanation: Square-shaped bacteria are not commonly found in nature and are considered exceptional in bacterial morphology.

• A. Radiations
• B. Chemicals
• C. Membrane filters
• D. Dry heat

Explanation: Compounds such as antibiotics, seras, hormones, etc are heat sensitive. Heat-sensitive compounds can be sterilized by membrane filters.

• A. Peptidoglycan
• B. rRNA
• C. Histones
• D. Teichoic acid

Explanation: In general, bacteria do not contain histones. Histones are a class of proteins that play a crucial role in the packaging and organization…

• A. Nucleoids
• B. Mesosomes
• C. Chromatin Bodies
• D. Plasmids

Explanation: "The explanation for this question will be added soon!".

• A. Stationary phase
• B. LAG phase
• C. Decline phase
• D. LOG phase

Explanation: The correct answer is the decline phase. During this phase, the conditions are no longer favorable for bacterial growth due to the…

• A. Lag phase
• B. Log phase
• C. Stationary phase
• D. Death/Decline phase

Explanation: The exponential or the log phase is the phase during which the bacterium increases the most rapidly.

• A. AIDS
• B. Genital herpes
• C. Syphilis
• D. Gonorrhea

Explanation: Treponema pallidum is the bacterium responsible for causing syphilis, a sexually transmitted infection.

• A. Nucleolus
• B. Centrosome
• C. Nucleoid
• D. Nucleus

Explanation: The correct answer is nucleoid. In bacteria, which are prokaryotic organisms, the genetic material is located in a region known as the…