Free Kingdom Prokaryotae MCQs with Answers

• A. Mitochondria
• B. RNA
• C. Ribosomes
• D. Plasma membrane

Explanation: Prokaryotes lack cell membrane-bound organelles, they do not contain mitochondria.

• A. Gram-positive bacteria
• B. Gram-negative bacteria
• C. Chemo-synthetic bacteria
• D. None of above

Explanation: Pilli is more common in gram-negative bacteria. Pili are long, filamentous appendages that protrude from the surface of bacteria and are…

• A. Transformation
• B. Conjugation
• C. Transduction
• D. All of these

Explanation: Based on the explanations provided, the correct answer to the question is option D) All of these.

• A. Absence of DNA
• B. Absence of nucleus
• C. Absence of cell wall
• D. Absence of plastids

Explanation: Prokaryotic cells have their nucleic material naked in the cytoplasm, so no nuclear envelope present, thus no nucleus.

• A. Nuclear body
• B. Nuclear region
• C. Nucleoid
• D. All of Above

Explanation: Prokaryotic chromosomes are naked in the cytoplasm. Chromatin body is the place where it is present and can be termed as all of the…

• A. Transduction
• B. Transformation
• C. Binary fission
• D. Conjugation

Explanation: Transformation is a process by which bacteria make up and incorporate foreign DNA from their environment.

• A. Nuclei
• B. Cell wall
• C. Ribosomes
• D. Plasma membrane

Explanation: 'E. Coli', a bacterium, is a prokaryote that lacks a true nucleus. Instead, they have a nucleoid, the chromosome with its associated…

• A. 100
• B. 150
• C. 200
• D. 250

Explanation: 200 species of bacteria are pathogenic, i.e can cause disease like cholera and tuberculosis in humans.

• A. Spores
• B. Cysts
• C. Granules
• D. All of these options are correct

Explanation: Option A is correct since spores are considerably more resistant to moist and dry heat than non-sporulating bacteria.

• A. Sexual reproduction
• B. Binary fission
• C. Mitosis
• D. Conjugation

Explanation: Conjugative or sex pili are special projections originating from many bacteria's cytoplasmic membranes.

• A. Cilia
• B. Flagella
• C. Pili
• D. Cytoplasm

Explanation: Pili are hollow, nonhelical, filamentous appendages. They are primarily involved in a mating process between cells called conjugation.

• A. Soft drinks
• B. Mango squash
• C. Milk
• D. Orange Juice

Explanation: Milk: This option is the correct answer. Milk is widely pasteurized to kill harmful bacteria and increase its shelf life.

• A. Photoautotrophic bacteria
• B. Chemosynthetic bacteria
• C. Saprotrophic bacteria
• D. Parasitic bacteria

Explanation: Cyanobacteria synthesize their own food from inorganic substances and this fall into the category of photoautotrophs.

• A. Diplococcus
• B. Sarcina
• C. Streptococcus
• D. Staphylococcus

Explanation: Option A is incorrect because Division in one plane that form a pair of coocci is called diplococcus.Option B is correct since Division in…

• A. Water
• B. Heat
• C. Milk products
• D. Vaccines

Explanation: Pasteurization is a technique to remove pathogenic organisms in certain foods and liquids.

• A. Monotrichous
• B. Peritrichous
• 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.

• A. Transformation
• B. Transduction
• C. Binary fission
• D. Conjugation

Explanation: In bacteria,genetic recombination takes place. Genetic recombination is primitive type of sexual reproduction.

• A. Chemosynthetic
• B. Photosynthetic
• C. Parasitic
• D. Pathogenic

Explanation: The nitrifying bacteria of the soil are Nitrosomonas and Nitrobacter. They are called chemoautotrophs (chemosynthetic would be a general…

• A. Disinfectants
• B. Chemotherapeutics
• C. Vaccines
• D. Antiseptics

Explanation: Antiseptics are used to inhibit the growth of bacteria.

• A. Cysts
• B. Spores
• C. Cell wall
• D. Capsules

Explanation: Endospores (spores withing the vegetative cells) are tough dormant structures that form inside the cell wall of certain types of bacteria…