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 18 of 27
- A. Spores
- B. Cysts
- C. Granules
- D. All of Above
Explanation: Spores are the most heat resistant form of bacteria. They are formed by some bacteria when environmental conditions become very harsh.
Correct answer: Spores- A. It forms a bridge between two bacterial cells
- B. It involves transport of genetic material via vectors
- C. It is a form of sexual reproduction
- D. Both B and C
Explanation: The answer is Both B and C.Bacterial conjugation is a form of horizontal gene transfer, which is the transfer of genetic material between…
Correct answer: Both B and C- A. Proteins
- B. Lipids
- C. Enzymes
- D. Chemicals
Explanation: ATP synthase: This enzyme is responsible for the synthesis of ATP from ADP and phosphate.
Correct answer: Enzymes- A. Binary fission and mitosis
- B. Binary fission and meiosis
- C. Binary fission and transformation
- D. Binary fission
Explanation: Prokaryotic cells divide through a form of asexual reproduction called binary fission.
Correct answer: Binary fission- A. Glycoproteins
- B. Polysaccharides
- C. Proteins
- D. Peptidoglycan
Explanation: Archaebacteria doesn't contain peptidoglycan.
Correct answer: Peptidoglycan- A. Cilia
- B. Flagella
- C. Pili
- D. Pseudopodia
Explanation: Flagella are long thread like structures which are used for locomotion.
Correct answer: Flagella- A. Nuclear body
- B. Nuclear region
- C. Nucleoid
- D. All of Above
Explanation: Chromatin bodies in prokaryotes is termed as Nuclear Body, Nuclear region and Nucleoid.
Correct answer: All of Above- A. Heterocyst
- B. Hormogonia
- C. Akinetes
- D. Mesosomes
Explanation: Nitrogen fixation occurs through heterocycts.
Correct answer: Heterocyst- A. Flagella
- B. Pili
- C. Capsule
- D. Slime
Explanation: Pilli are tubular extensions of cell membrane and project through the cell wall.They are composed of pillin protein.
Correct answer: Pili- A. Gram positive bacteria
- B. Gram negative bacteria
- C. Both A and B
- D. None
Explanation: Periplasmic space is a region that exists between the inner and outer membranes in gram-negative bacteria.
Correct answer: Gram positive bacteria- A. Cell wall
- B. Cell membrane
- C. Slime
- D. Capsule
Explanation: Just beneath the cell wall is the cell membrane or plasma membrane. It is very thin, lexible and completely surrounds the cytoplasm.
Correct answer: Cell membrane- A. Cell wall
- B. Slime
- C. Cell membrane
- D. Capsule
Explanation: Correct option is C cell membrane, The cell membrane, also known as the plasma membrane, is a semipermeable barrier that surrounds the…
Correct answer: Cell membrane- A. PSI
- B. PSII
- C. Both A and B
- D. None
Explanation: Correct Option C: This option is correct. Cyanobacteria are related to eukaryotes in having both PSI (Photosystem I) and PSII (Photosystem…
Correct answer: Both A and B- A. Mitochondria
- B. Chloroplast
- C. Both A and B
- D. None of the above
Explanation: Option C is correct. Both mitochondria and chloroplasts are believed to be of prokaryotic origin, and their presence in eukaryotic cells…
Correct answer: Both A and B- A. Antibodies
- B. Environmental stress
- C. Disinfectants
- D. All of these
Explanation: Option D is correct. Spores are resistant to antibodies, environmental stress, and many disinfectants, making them highly durable and…
Correct answer: All of these- A. Gas vesicle
- B. Gliding motility
- C. Flagella
- D. Both A and B
Explanation: Option D is correct. Cyanobacteria can move by utilizing gas vesicles to control their buoyancy in the water column and by gliding…
Correct answer: Both A and B- A. Photosynthetic bacteria
- B. Heterotrophic bacteria
- C. Saprotrophic bacteria
- D. Chemosynthetic bacteria
Explanation: Purple non-sulfur bacteria are photosynthetic bacteria that perform anoxygenic photosynthesis using organic compounds other than water as…
Correct answer: Photosynthetic bacteria- A. Transduction
- B. Binary fission
- C. Conjugation
- D. Transformation
Explanation: Binary fission is the most similar type of bacterial replication to mitosis. It is the process by which bacteria reproduce asexually.
Correct answer: Binary fission- A. Spirochete
- B. E. coli
- C. Pseudomonas
- D. Campylobacter
Explanation: Campylobacter is an example of a bacterial genus that requires low concentrations of oxygen, making them microaerophilic organisms.
Correct answer: Campylobacter- A. Saprophytic
- B. Anaerobic
- C. Aerobic
- D. Facultative
Explanation: Saprophytic bacteria are also known as saprotrophic bacteria. They are decomposers that obtain their energy and nutrients by breaking down…
Correct answer: Saprophytic