Prokaryotic vs Eukaryotic Cells — Homi Bhabha Class 9 Biology MCQs with Solutions
Free Homi Bhabha Class 9 Biology Prokaryotic vs Eukaryotic Cells MCQs with step-by-step solutions (10 questions). Part of Cell Biology & Tissues. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Prokaryotic vs Eukaryotic Cells · medium · theory
A cell that lacks a well-defined, membrane-bound nucleus is called:
A. somatic
B. multicellular
C. prokaryotic ✓ Correct
D. eukaryotic
Solution: Prokaryotic cells have no true nucleus; their genetic material lies free in the cytoplasm.
Q2 — Prokaryotic vs Eukaryotic Cells · medium · theory
Bacteria are examples of:
A. eukaryotic organisms
B. fungi
C. viruses
D. prokaryotic organisms ✓ Correct
Solution: Bacteria are prokaryotes — they lack a membrane-bound nucleus.
Q3 — Prokaryotic vs Eukaryotic Cells · hard · theory
A key feature of eukaryotic cells that prokaryotic cells lack is:
A. genetic material
B. membrane-bound organelles and a true nucleus ✓ Correct
C. cytoplasm
D. a cell membrane
Solution: Eukaryotes have a true nucleus and membrane-bound organelles; prokaryotes do not.
Q4 — Prokaryotic vs Eukaryotic Cells · medium · theory
Which of the following has eukaryotic cells?
A. A blue-green alga (cyanobacterium)
B. None of these
C. A plant ✓ Correct
D. A bacterium
Solution: Plants (and animals, fungi, protists) are eukaryotes; bacteria and cyanobacteria are prokaryotes.
Q5 — Prokaryotic vs Eukaryotic Cells · hard · theory
In a prokaryotic cell, the genetic material (DNA) is:
A. found only in mitochondria
B. not enclosed by a nuclear membrane ✓ Correct
C. enclosed in a true nucleus
D. absent
Solution: Prokaryotic DNA lies free in the cytoplasm in a region called the nucleoid, with no nuclear membrane.
Q6 — Prokaryotic vs Eukaryotic Cells · medium · theory
Compared with eukaryotic cells, prokaryotic cells are generally:
A. always multicellular
B. smaller and simpler ✓ Correct
C. without any DNA
D. larger and more complex
Solution: Prokaryotic cells are typically smaller and structurally simpler than eukaryotic cells.
Q7 — Prokaryotic vs Eukaryotic Cells · easy · theory
Which of the following is present in a eukaryotic cell but ABSENT in a prokaryotic cell?
A. Ribosomes
B. A true membrane-bound nucleus ✓ Correct
C. A cell membrane
D. Cytoplasm
Solution: Prokaryotes have no membrane-bound nucleus; their DNA lies free in the cytoplasm. A true nucleus is a defining feature of eukaryotic cells, while cell membrane, ribosomes and cytoplasm are found in both.
Q8 — Prokaryotic vs Eukaryotic Cells · easy · theory
Which of the following organisms is made of PROKARYOTIC cells?
A. Amoeba
B. Onion
C. Bacterium ✓ Correct
D. Human
Solution: Bacteria are prokaryotes, lacking a membrane-bound nucleus. Onion, amoeba and humans are all made of eukaryotic cells.
Q9 — Prokaryotic vs Eukaryotic Cells · medium · theory
Bacterial ribosomes are 70S while the cytoplasmic ribosomes of a human cell are 80S. Which statement best explains why some antibiotics can kill bacteria without harming human cells?
A. Bacteria have no ribosomes at all
B. The drug destroys the bacterial nucleus
C. The drug binds 70S ribosomes but not 80S ribosomes, blocking protein synthesis only in the bacteria ✓ Correct
D. Human cells have no ribosomes
Solution: Because bacterial (70S) and human (80S) ribosomes differ in structure, an antibiotic that binds only the 70S type halts protein synthesis in bacteria while leaving the human 80S ribosomes unaffected.
Q10 — Prokaryotic vs Eukaryotic Cells · hard · theory
Which set lists ONLY features that are found in BOTH prokaryotic and eukaryotic cells?
A. Cell membrane, mitochondria, Golgi body
B. Chloroplast, nucleus, cytoplasm
C. Cell membrane, cytoplasm, ribosomes, DNA ✓ Correct
D. Nuclear membrane, mitochondria, ribosomes
Solution: Every cell, prokaryotic or eukaryotic, has a cell membrane, cytoplasm, ribosomes and DNA. Membrane-bound structures such as a nuclear membrane, mitochondria, Golgi body and chloroplasts occur only in eukaryotes.