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 8 of 27
- A. Dutch
- B. Greek
- C. Roman
- D. Spanish
Explanation: The term prokaryote comes from the Greek (pro) meaning "before" and (karyon) meaning "nut or kernel".
Correct answer: Greek- A. Archaeobacteria and vibrio bacteria
- B. Eubacteria and Streptococcus
- C. Eubacteria and Archaeobacteria
- D. Cyanobacteria and Archaeobacteria
Explanation: Microbiologists classify bacteria into two major categories: Eubacteria, which means "true bacteria, and the smaller group called…
Correct answer: Eubacteria and Archaeobacteria- A. Mitosis
- B. Binary fission
- C. Meiosis
- D. Conjugation
Explanation: Cyanobacteria, like most prokaryotes, reproduce primarily by binary fission, a simple and efficient method of reproduction.
Correct answer: Binary fission- A. Nucleus
- B. DNA
- C. Cell membrane
- D. Mitochondria
Explanation: This option is correct because a Bacterial cell does contain its genetic material in its nucleoid but it is absent in mature erythrocytes.
Correct answer: DNA- A. 300
- B. 120
- C. 150
- D. 200
Explanation: Archaeobacteria are known for their ability to survive extreme environments, including high-temperature habitats.
Correct answer: 120- A. Cocci
- B. Bacilli
- C. Spirochete
- D. None of these
Explanation: Cocci are spherical or roughly spherical bacteria. Neisseria falls under this category as it is a Gram-negative cocci specifically…
Correct answer: Cocci- A. Gram positive bacteria
- B. Gram negative bacteria
- C. Both A & B
- D. Mycoplasmas
Explanation: Gram positive bacteria is more permeable as outer membrane is absent, so this is correct.
Correct answer: Gram positive bacteria148. E. coli is a:
- A. Facultative
- B. Anaerobic
- C. Gram-negative
- D. All of these
Explanation: Escherichia coli (E. coli) is facultative anaerobe. it is anaerobic in the absence of oxygen, and it is also Gram-negative because its…
Correct answer: All of these- A. Cyanobacteria
- B. Nostoc
- C. Chlorella
- D. E. coli
Explanation: Cyanobacteria are known as blue-green algae and are true photosynthetic bacteria.
Correct answer: Cyanobacteria- A. Tuberculosis and typhoid
- B. Tuberculosis and measles
- C. Tuberculosis and cholera
- D. All of the above
Explanation: German physician Robert Koch was one of the founders of bacteriology. He discovered the anthrax disease cycle (1876) and the bactana…
Correct answer: Tuberculosis and cholera- A. Single cell
- B. Chain of bacilli
- C. Pairs of bacilli
- D. All of the above
Explanation: Streptobacillus is a type of bacteria that appears in the form of a chain of rod-shaped cells (bacilli).
Correct answer: Chain of bacilli- A. Eubacteria
- B. Archaeobacteria
- C. Animalcules
- D. Prokaryote
Explanation: This option is correct because Animalcule (little animal', from Latin animal-the diminutive suffix-culum) is an old term for microscopic…
Correct answer: Animalcules- A. A specific organism can always be found associated with a disease
- B. The organism cannot be isolated and grown in a pure culture in the laboratory
- C. The pure culture will produce the disease when inoculated into a susceptible animal
- D. It is possible to recover the organisms in pure culture from an experimentally infected animal
Explanation: This statement is not correct as organisms can be isolated and grown pure culture.
Correct answer: The organism cannot be isolated and grown in a pure culture in the laboratory- A. E. Coli
- B. Staphylococci and Streptococci
- C. Spirochetes
- D. Epulopiscium fishelsoni
Explanation: Staphylococci and Streptococci are 0.75-1.25 micrometer in diameter.
Correct answer: Staphylococci and Streptococci- A. Gram-positive bacteria-peptidoglycan
- B. Gram-positive bacteria-lipids
- C. Gram-negative bacteria-no outer membrane
- D. Gram-negative bacteria-less permeable
Explanation: Gram-negative bacteria have an outer membrane of lipoprotein which is absent in gram-positive bacteria.
Correct answer: Gram-negative bacteria-no outer membrane- A. Stationary phase
- B. Lag phase
- C. Log phase
- D. Death phase
Explanation: In this phase, bacteria are actively dividing and growing at their maximum rate.
Correct answer: Log phase- A. On the anterior side
- B. Over a single dimension
- C. In width
- D. In thickness
Explanation: Bacteria range in size from about 0.1 to 600µm over a single dimension, which is the ir length.
Correct answer: Over a single dimension- A. Discoloration of teeth in young children
- B. Dumbness
- C. Allergic reactions
- D. Discoloration of teeth in young children, causing deafness and allergic reactions
Explanation: Misuse of antibiotics can cause various side effects and issues. but it does not cause "dumbness".
Correct answer: Dumbness- A. Deafness
- B. Death
- C. Allergic reactions
- D. Discoloration of teeth
Explanation: Misuse of streptomycin can lead to irreversible damaga to the auditory nerve, causing hearing loss or deafness.
Correct answer: Deafness- A. Spindle-shaped bacteria
- B. Filamentous bacteria
- C. Lobed bacteria
- D. Spindle-shaped, Filamentous, Lobed, and Star-like bacteria
Explanation: These forms represent exceptions to the basic bacterial shapes of cocci (round), bacilli (rod-shaped), and spirilla [helical.
Correct answer: Spindle-shaped, Filamentous, Lobed, and Star-like bacteria