Molecular Biology(General Knowledge > General Science ) Questions and Answers

Question 1. What is the chemical formula for photosynthesis?
  1.    C6H12O6 + 6H2O --> 6CO2 + 6O2 + Sun Light
  2.    C6H12O6 + H2O --> CO2 + O2 +ATP
  3.    6CO2 + 6O2 + Sun Light --> C6H12O6 + 6H2O
  4.    6CO2 + 6H2O + Sun Light --> C6H12O6 + 6O2
Explanation:-
Answer: Option D. -> 6CO2 + 6H2O + Sun Light --> C6H12O6 + 6O2
Question 2. What is the chemical formula for cellular respiration?
  1.    C6H12O6 + 6H2O --> 6CO2 + 6O2 + Sun Light
  2.    C6H12O6 + 6O2 --> 6CO2 + 6H2O +ATP
  3.    6CO2 + 6O2 + Sun Light --> C6H12O6 + 6H2O
  4.    6CO2 + 6H2O + Sun Light --> C6H12O6 + 6O2 + ATP
Explanation:-
Answer: Option B. -> C6H12O6 + 6O2 --> 6CO2 + 6H2O +ATP
Question 3. Where in the cell does DNA replication occur?
  1.    always the cytoplasm
  2.    always the nucleus
  3.    in the cytoplasm in eukaryotes and the nucleus in prokaryotes
  4.    in the cytoplasm in prokaryotes and the nucleus in eukaryotes
Explanation:-
Answer: Option D. -> in the cytoplasm in prokaryotes and the nucleus in eukaryotes
Question 4. Which of the following processes does not occur in prokaryotes?
  1.    Transcription
  2.    Splicing
  3.    Translation
  4.    Replication
Explanation:-
Answer: Option B. -> Splicing
Question 5. How are plant cells and human cells the same?
  1.    They can produce their own oxygen.
  2.    They can receive nutrients through the cell wall.
  3.    They make their own glucose from sunlight during photosynthesis.
  4.    They use mitochondria to release energy from glucose during cellular respiration.
Explanation:-
Answer: Option D. -> They use mitochondria to release energy from glucose during cellular respiration.
Question 6. Which best describes how organisms obtain energy from food?
  1.    Food (Glucose) reacts with water to release energy during photosynthesis.
  2.    Food (Glucose) reacts with oxygen to release energy (ATP) during cellular respiration.
  3.    Food (Glucose) reacts with sunlight to release energy during photosynthesis.
  4.    Food (Glucose) reacts with carbon dioxide to release energy during cellular respiration.
Explanation:-
Answer: Option B. -> Food (Glucose) reacts with oxygen to release energy (ATP) during cellular respiration.
Question 7. RRNA is
  1.    used as a template to make protein
  2.    part of a ribosome
  3.    a small molecule used by the ribosome and is not made into protein
  4.    all of the above
Explanation:-
Answer: Option B. -> part of a ribosome
Question 8. TRNA is
  1.    used as a template to make protein
  2.    part of a ribosome
  3.    a small molecule used by the ribosome and is not made into protein
  4.    all of the above
Explanation:-
Answer: Option C. -> a small molecule used by the ribosome and is not made into protein
Question 9. What is a prokaryotic organism?
  1.    An organism without a nucleus or membrane bound organelles
  2.    An organism with a nucleus and membrane bound organelles.
  3.    An organism with a nucleus but no membrane bound organelles
  4.    An organism with membrane bound organelles but no nucleus
Explanation:-
Answer: Option A. -> An organism without a nucleus or membrane bound organelles
Question 10. MRNA is
  1.    used as a template to make protein
  2.    part of a ribosme
  3.    a small molecule used by the ribosome and is not made into protein
  4.    all of the above
Explanation:-
Answer: Option A. -> used as a template to make protein
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