Life Under the Microscope

Science and Technology · 10 questions

A 10-question quiz on microbial cell structures, core processes, and distinguishing features.

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1. What is the cell membrane's selective regulation of substances entering and leaving the cell called?

   1. Intracellular digestion
   2. Genetic transfer
   3. Protein folding
   4. Selective permeability
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   D) Selective permeability

2. Which form of reproduction divides one bacterial cell into two daughter cells?

   1. Conjugation
   2. Budding
   3. Meiosis
   4. Binary fission
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   D) Binary fission

3. What is the protein coat surrounding a virus's genetic material called?

   1. Cell wall
   2. Ribosome
   3. Capsid
   4. Cell membrane
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   C) Capsid

4. In eukaryotic cells, which organelle is the main site of cellular respiration?

   1. Endoplasmic reticulum
   2. Mitochondrion
   3. Lysosome
   4. Golgi apparatus
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   B) Mitochondrion

5. What process copies a DNA molecule?

   1. DNA replication
   2. Transcription
   3. Translation
   4. Recombination
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   A) DNA replication

6. Which structural material is commonly found in bacterial cell walls?

   1. Chitin
   2. Peptidoglycan
   3. Cholesterol
   4. Cellulose
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   B) Peptidoglycan

7. Which structure carries out protein synthesis in bacterial cells?

   1. Ribosome
   2. Cell wall
   3. Golgi apparatus
   4. Lysosome
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   A) Ribosome

8. Which type of bond distinguishes lipids in archaeal cell membranes?

   1. Ether bond
   2. Peptide bond
   3. Phosphodiester bond
   4. Ester bond
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   A) Ether bond

9. What process transfers a bacterial plasmid to another bacterium through direct cell contact?

   1. Binary fission
   2. Transduction
   3. Conjugation
   4. Transformation
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   C) Conjugation

10. What cell-wall feature helps bacteria appear purple in a Gram stain?

    1. Chitin layer
    2. Thick peptidoglycan layer
    3. Cellulose layer
    4. Thin peptidoglycan layer
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    B) Thick peptidoglycan layer