Free Prokaryotic and Eukaryotic Cells MCQs with Answers
80 Prokaryotic and Eukaryotic Cells MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Prokaryotic cells lack a membrane-bound nucleus and complex membrane-bound organelles, whereas eukaryotic cells contain a nucleus, specialized organelles and a cytoskeleton. Comparisons include DNA organization, ribosomes, cell walls, size, division and examples such as bacteria, archaea, protists, fungi, plants and animals.
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80 questions · page 4 of 4
- A. Chromosomes
- B. Nucleus
- C. Centrosome
- D. Mesosomes
Explanation: Mitosis cannot take place in bacteria because they lack nucleus. Nucleus consists of multiple chromosomes that replicate and result in…
Correct answer: Nucleus- A. Polysome
- B. Endosome
- C. Mesosome
- D. Centrosome
Explanation: Mesosome is a convoluted membranous structure formed in a prokaryotic cell by the invagination of the plasma membrane.
Correct answer: Mesosome- A. Flagella
- B. Capsule
- C. Pilli
- D. Mesosomes
- E. Nucleoid
Explanation: Explanation for this question will be added soon.
Correct answer: Pilli- A. Absence of membrane bound organelles
- B. Absence of nucleus
- C. Presence of 70S ribosomes
- D. All of these
Explanation: Option D is correct since a prokaryotic cell does not have membrane-bound cellular organelles and a nucleus. It contains 70S ribosomes.
Correct answer: All of these- A. 80s ribosomes
- B. Cell wall
- C. Cell membrane
- D. Golgi apparatus
Explanation: Ribosomes are used by the cells for the translation of mRNA to produce proteins.
Correct answer: Cell membrane- A. Prokaryotic cell walls contain cellulose
- B. Prokaryotic cell walls contain peptidoglycan
- C. Prokaryotic cell walls contain cutin
- D. Prokaryotic cell walls contain silica
Explanation: What distinguishes Prokaryotic cell walls from Fungal cell walls is that Prokaryotic cell walls contain peptidoglycan
Correct answer: Prokaryotic cell walls contain peptidoglycan67. Damage to one of the following immediately kills the cell, whether it's prokaryotic or eukaryotic:
- A. Nucleus
- B. Cell membrane
- C. Mitochondria
- D. All of these
Explanation: If the cell membrane is damaged, the cell will not be able to exchange material from its surroundings by diffusion or osmosis because it…
Correct answer: Cell membrane- A. Cysts.
- B. Ribosomes.
- C. Mesosomes.
- D. Spores.
Explanation: These extensions help in the synthesis of the cell wall and replication of DNA
Correct answer: Mesosomes.- A. Centrioles
- B. X-chromosome
- C. Plastids
- D. Sieve-tubes
Explanation: Since prokaryotic cells do not indulge in sexual reproduction, they don't have either the X chromosomes or the Y chromosomes.
Correct answer: X-chromosome- A. Campylobacter
- B. Cyanobacteria
- C. Spirochete
- D. Goblet cells
Explanation: Nucleoid is exclusive to prokaryotic cells only where the circular DNA exists without a membrane. Goblet cells are eukaryotic.
Correct answer: Goblet cells- A. Pseudomonas
- B. Campylobacter
- C. Euglena
- D. E.coli
Explanation: Euglena is a genus of single-cell flagellate eukaryotes. All other mentioned organisms are prokaryotes.
Correct answer: Euglena- A. Cytoplasmic streaming movement
- B. Ribosome
- C. Binary fission
- D. Nuclear envelope
Explanation: Ribosomes are cellular structures responsible for protein synthesis. They are found in both prokaryotic and eukaryotic cells and play a…
Correct answer: Ribosome- A. E. Coli
- B. Nostoc
- C. Blue green algae
- D. Cyanobacteria
- E. None of these
Explanation: Mitosis is the process by which a eukaryotic somatic cell divides to produce two genetically identical daughter cells.
Correct answer: None of these- A. Spores
- B. Cyst
- C. Nucleoid
- D. Mesosomes
Explanation: In prokaryotic cells, which lack membrane-bound organelles like mitochondria, the role of generating energy through cellular respiration…
Correct answer: Mesosomes- A. Carbohydrates
- B. Carbohydrates and Proteins
- C. Proteins
- D. Proteins & Lipids
Explanation: The correct answer is Carbohydrates, as prokaryotic cell walls are predominantly composed of peptidoglycan, which is a polymer made from…
Correct answer: Carbohydrates- A. Mesosomes
- B. Ribosomes
- C. Storage bodies
- D. Membrane bound organelles
Explanation: Prokaryotic cells, such as bacteria and archaea, lack membrane-bound organelles like a nucleus, mitochondria, or endoplasmic reticulum.
Correct answer: Membrane bound organelles- A. 40S
- B. 60S
- C. 70S
- D. 80S
Explanation: 70S: This option is correct because prokaryotic cells have ribosomes made up of a small 30S subunit and a large 50S subunit, totaling 70S.
Correct answer: 70S- A. 1%
- B. 2%
- C. 3%
- D. 4%
Explanation: Bacterial cells are prokaryotic and lack the complex structures found in eukaryotic cells.
Correct answer: 1%- A. Haploid, single stranded, coiled
- B. Diploid, double stranded, coiled
- C. Haploid, double stranded, coiled
- D. Diploid, single stranded, coiled
Explanation: Bacterial DNA is characterized by being a single, circular, double stranded molecule that is tightly coiled to fit within the cell.
Correct answer: Haploid, double stranded, coiled- A. Cellulose
- B. Chitin
- C. Murein
- D. Pectin
Explanation: Option C is correct.The prokaryotic cell wall is composed of murein, also known as peptidoglycan.
Correct answer: Murein