Free Kingdom Prokaryotae MCQs with Answers
533 Kingdom Prokaryotae MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
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533 questions · page 12 of 27
- A. Robert Koch
- B. Louis Pasteur
- C. Alexander Fleming
- D. Antonie van Leeuwenhoek
Explanation: Historical Perspectives Centennial: Koch's Discovery of the Tubercle Bacillus.
Correct answer: Robert Koch- A. Both processes produce four haploid cells
- B. Both processes are a form of asexual reproduction
- C. Both processes involve genetic recombination
- D. None of these options are correct
Explanation: Both bacterial conjugation and meiosis involve genetic recombination, which is the process of exchanging genetic material to create…
Correct answer: Both processes involve genetic recombination- A. Sporulation
- B. Fission
- C. Apomixis
- D. All of these options are correct
Explanation: All of the above given options are different mode of sexual reproduction in living beings.
Correct answer: All of these options are correct- A. Spirochete
- B. Escherichia coli (E. coli)
- C. Pseudomonas
- D. Campylobacter
Explanation: Option D: Campylobacter is the correct answer as it is a microaerophilic bacterium, requiring low levels of oxygen to survive and grow.
Correct answer: Campylobacter- A. Protection from enviroment
- B. Protection from engulfment
- C. Protection from osmotic lysis
- D. All of the above
Explanation: Capsule is tightly bound to the bacterial cell. It is a part of the cell envelope.
Correct answer: Protection from engulfment- A. Purple
- B. Red
- C. Pink
- D. Blue
Explanation: Gram-positive bacteria appear purple under Gram staining because they retain the crystal violet stain due to their thick peptidoglycan…
Correct answer: Purple227. Chemical substances used on living tissues that inhibit the growth of microorganism are called?
- A. Disinfectant
- B. Sanitizer
- C. Antibiotic
- D. Antiseptics
Explanation: Antiseptics are specifically designed for use on living tissues to inhibit or kill microorganisms, making them the correct answer.
Correct answer: Antiseptics- A. Protist
- B. Cyanobacteria
- C. Archaea
- D. Bacteria
Explanation: Methanopyrus kandleri is classified as an archaeon because it thrives in extreme environments, such as hydrothermal vents, where…
Correct answer: Archaea- A. Basal body
- B. Cell membrane
- C. Cell wall
- D. Capsule
Explanation: In prokaryotic cells, the flagella originate from the basal body, which is embedded in the cytoplasm and serves as the anchoring point for…
Correct answer: Basal body- A. Cytoplasm
- B. Ribosomes
- C. Flagella
- D. Peptidoglycan cell wall
Explanation: The presence of a peptidoglycan cell wall is a unique characteristic of most prokaryotic cells, distinguishing them from eukaryotic cells…
Correct answer: Peptidoglycan cell wall- A. Sulphur
- B. Oxygen
- C. Hydrogen
- D. Carbon dioxide
Explanation: Prokaryotes use H2S instead of water so they release sulphur, unlike plants and algae which use water as a hydrogen source and thus…
Correct answer: Sulphur- A. Flagella
- B. Pili
- C. Cilia
- D. Microtubules
Explanation: The correct answer is Flagella. Flagella are specialized structures that provide motility to bacteria by rotating like propellers…
Correct answer: Flagella- A. Peptidoglycan
- B. Respiratory enzymes
- C. Cholesterol
- D. Phospholipids
Explanation: Cholesterol is a lipid molecule that is an essential component of the plasma membrane in eukaryotic cells.
Correct answer: Cholesterol- A. Oxidation of proteins
- B. Coagulation of proteins
- C. Degeneration of nucleic acids
- D. Bursting up of cells
Explanation: Moist heat primarily kills microbes by causing the coagulation or denaturation of proteins.
Correct answer: Coagulation of proteins- A. Lipids
- B. Peptidoglycan
- C. Teichoic acid
- D. Lipoteichoic acid
Explanation: The correct answer is Lipids. Gram-negative bacteria have a unique cell wall structure characterized by an outer membrane rich in lipids…
Correct answer: Lipids- A. Nucleoids
- B. Mesosomes
- C. Chromatin Bodies
- D. Plasmids
Explanation: Plasmids are extrachromosomal DNA found in many bacteria and are known for carrying genes that can provide resistance to antibiotics.
Correct answer: Plasmids- A. Sulphur
- B. Phosphorus
- C. Calcium
- D. Magnesium
Explanation: Photosynthetic bacteria is mistakenly typed as photosynthesis bacteria. Option A: Sulphur is correct.
Correct answer: Sulphur- A. Cellulose & pectin
- B. Cellulose & cutin
- C. Hemicellulose & chitin
- D. Amino acid & sugar
Explanation: Amino acids and sugar is correct.Cell-wall of bacteria is totally different from ordinary plant cell-wall.
Correct answer: Amino acid & sugar- A. Mesosomes
- B. Peroxisomes
- C. Glyoxysomes
- D. Nucleosomes
Explanation: Mesosomes are invaginations of the cell membrane into the cytoplasm. Mesosomes are in the form of vesicles, tubules, or lamellae.
Correct answer: Mesosomes- A. Cell Wall
- B. Cell Membrane
- C. Plasmid
- D. Cysts
Explanation: Mesosomes were once thought to be infoldings of the plasma membrane found in some bacteria, particularly Gram-positive species, and were…
Correct answer: Cell Membrane