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.
Last updated
533 questions · page 1 of 27
- A. Steam
- B. Dry heat
- C. Filtration
- D. Radiation
Explanation: Dry heat helps kill the organisms using the destructive oxidation method.
Correct answer: Dry heat- A. Peptidoglycans
- B. Flagellin
- C. Bacteriorhodopsin
- D. Chitin
- E. Phycobilins
Explanation: Chitin is a polysaccharide found in the exoskeleton of arthropods and in the cell walls of fungi.
Correct answer: Chitin- A. Mycoplasma
- B. Gram positive bacteria
- C. Gram negative bacteria
- D. Archaeo bacteria
Explanation: Mycoplasma is indeed a bacterium that is known for lacking a cell wall.
Correct answer: Mycoplasma- A. Crystal violet
- B. Gram's iodine
- C. Feulgen stain
- D. Safranin
Explanation: Option D is correct as gram-negative bacteria are not easily stained by primary dye (crystal violet) so a secondary dye (safranin or…
Correct answer: Safranin- A. Methanogens
- B. Cyanobacteria
- C. Euglena
- D. Spirogyra
Explanation: There is suggestive evidence that photosynthetic organisms were present approximately 3.2 to 3.5 billion years ago, in the form of…
Correct answer: Cyanobacteria- A. Locomotion
- B. Conjugation
- C. Phagocytosis
- D. Pinocytosis
- E. Exocytosis
Explanation: Conjugative pili allow for the transfer of DNA between bacteria, in the process of bacterial conjugation.
Correct answer: Conjugation- A. Mesosome
- B. Golgi bodies
- C. Mitochondria
- D. Chloroplast
Explanation: Bacteria are prokaryotes. They are made up of single cells. They do not have well-defined nuclei, instead, they possess nucleoids as…
Correct answer: Mesosome- 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 as shown in the figure below:
Correct answer: Log phase- A. Saprotrophic bacteria
- B. Parasitic bacteria
- C. Cyanobacteria
- D. Pathogenic bacteria
Explanation: The answer is tiny organisms known as cyanobacteria or blue-green algae.
Correct answer: Cyanobacteria- A. It has cell wall
- B. It has cytoplasm
- C. It has genetic material
- D. All of the above
Explanation: A typical bacterium has all the structures listed from opinion A-C, including cell wall, cytoplasm and genetic material.
Correct answer: All of the above- A. Bacterium
- B. Allergy
- C. Nicotine
- D. Virus
Explanation: Tuberculosis (TB) is caused by a bacterium called Mycobacterium tuberculosis.
Correct answer: Bacterium- A. Peritrichous
- B. Monotrichous
- C. Lophotrichous
- D. Amphitrichous
Explanation: There are four types of flagellar arrangements based on the number and placement of flagella on the cell. These are, 1.
Correct answer: Lophotrichous- A. Cholera, typhoid, mumps
- B. Tetanus, tuberculosis, measles
- C. Malaria, mumps, poliomyelitis
- D. Diphtheria, leprosy, plague
Explanation: Cholera is a bacteria infection caused by eating food or drinking water contaminated with Vibrio cholerae.
Correct answer: Diphtheria, leprosy, plague- A. Gonorrhea
- B. Syphilis
- C. Genital herpes
- D. AIDS
Explanation: Treponema Pallidum causes a disease called Syphilis.
Correct answer: Syphilis- A. Cell wall
- B. Slime
- C. Capsule
- D. Cell membrane
Explanation: "Bacterial surface and walls are very diverse. Collectively complexes of layer external to the cell protoplasm are called as cell envelope…
Correct answer: Cell membrane- A. A: Stationary, B: Log, C: Lag
- B. A: Lag, B: Stationary, C: Log
- C. A: Log, B: Lag, C: Stationary
- D. A: Lag, B: Log, C: Stationary
Explanation: When a graph is plotted taking into consideration time on one hand and growth rate, on the other hand, an S-shaped curve is obtained.
Correct answer: A: Lag, B: Log, C: Stationary- A. Conjugation
- B. Transformation
- C. Transduction
- D. All of the above
Explanation: Bacteria increase their genetic diversity through three recombination techniques: transduction, transformation and conjugation.
Correct answer: All of the above- A. Light
- B. Desiccation
- C. pH
- D. Heat
Explanation: An endospore bacteria can survive a number of harsh conditions such as heat, drying, radiation, and chemicals.
Correct answer: Heat- A. Lag phase
- B. Log phase
- C. Stationary phase
- D. Decline phase
Explanation: Bacterial colonies progress through four phases of growth: the lag phase, the log phase, the stationary phase, and the death phase.
Correct answer: Log phase- A. Polysaccharides
- B. Cellulose
- C. Amino acids
- D. Proteins
Explanation: The glycocalyx is an outer coating that covers the outside of the bacterial cell wall.
Correct answer: PolysaccharidesKingdom Prokaryotae MCQs: common questions
Are these Kingdom Prokaryotae MCQs free?
Yes. All Kingdom Prokaryotae MCQs from Biology are free on TestUstad, with unlimited attempts and no account needed. Nothing on this page is a sample or a trial.
How many Kingdom Prokaryotae MCQs are on this page?
There are 533 Kingdom Prokaryotae MCQs in the Biology bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Kingdom Prokaryotae MCQ have an explanation?
Yes. Each Kingdom Prokaryotae question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
Can I take a timed Kingdom Prokaryotae test?
Yes. The practice button on this page starts a free Kingdom Prokaryotae test drawn from the Biology bank. It marks each answer instantly, gives you a score at the end, and can be retaken as many times as you like.