General Knowledge > General Science
BASIC OF LIFE - CELLS MCQs
Half Life, Diversity Of Life, Cell The Unit Of Life
Total Questions : 115
| Page 2 of 12 pages
Answer: Option A. -> Chloroplast
:
A
Chloroplasts are small green, bean shaped organelles and are the site of photosynthesis, allowing the the plant to convert light (radiant) energy into chemical potential energy.
:
A
Chloroplasts are small green, bean shaped organelles and are the site of photosynthesis, allowing the the plant to convert light (radiant) energy into chemical potential energy.
Answer: Option B. -> Centromere
:
B
The primary constriction of a chromosome is indicated by the centromere.
:
B
The primary constriction of a chromosome is indicated by the centromere.
Answer: Option B. -> resins
:
B
Resins are ergastic substances .Ergastic substancesare non-protoplasmmaterials found in cells. These are not considered as cell organelles.
:
B
Resins are ergastic substances .Ergastic substancesare non-protoplasmmaterials found in cells. These are not considered as cell organelles.
Answer: Option B. -> 60s & 40s
:
B
Eukaryotic ribosomes(80 S ribosomes)have two unequalsubunits, designated smallsubunit(40S) and largesubunit(60S) according to their sedimentation coefficients
:
B
Eukaryotic ribosomes(80 S ribosomes)have two unequalsubunits, designated smallsubunit(40S) and largesubunit(60S) according to their sedimentation coefficients
Answer: Option A. -> Mitochondria
:
A
In mitochondria, the inner membrane space is filled with a matrix that contains dense granules along with ribosomes and mitochondrial DNA. The mitochondrial DNA is circular in nature, hence mitochondria are also called as the semiautonomous organelle.
:
A
In mitochondria, the inner membrane space is filled with a matrix that contains dense granules along with ribosomes and mitochondrial DNA. The mitochondrial DNA is circular in nature, hence mitochondria are also called as the semiautonomous organelle.
Answer: Option C. -> Mitochondria
:
C
In the absence of oxygen, respiration does not take place and mitochondria would be absent, as in mitochondria aerobic respiration occurs.
:
C
In the absence of oxygen, respiration does not take place and mitochondria would be absent, as in mitochondria aerobic respiration occurs.
Answer: Option B. -> 50 S, 30 S
:
B
Prokaryotic ribosome is of 70 S type, which consists of two sub units, a small 30 S subunit and a large 50 S subunit. Eukaryotic ribosome is of 80 S type. It consists of two subunits, a small 40 S subunit and a large 60 S subunit.
:
B
Prokaryotic ribosome is of 70 S type, which consists of two sub units, a small 30 S subunit and a large 50 S subunit. Eukaryotic ribosome is of 80 S type. It consists of two subunits, a small 40 S subunit and a large 60 S subunit.
Answer: Option B. -> Plasmodesmata – The membrane surrounding the vacuole in plants.
:
B
The membrane which surrounds the vacuole is known as the tonoplast.
:
B
The membrane which surrounds the vacuole is known as the tonoplast.
Answer: Option B. -> Both chloroplasts and mitochondria have an internal compartment, the thlakoid space bounded by the thylakoid membrane.
:
B
Thylakoid space is present only in chloroplasts. The inner membrane of mitochondria folded to form cristae.
:
B
Thylakoid space is present only in chloroplasts. The inner membrane of mitochondria folded to form cristae.
Question 20. The RER in the cell synthesised protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle. Identify that organelle which modifies a protein from the given diagram.
Answer: Option A. -> D
:
A
From the given options 'D' represents golgi complex. Golgi bodies are the organelles which modifies proteins by adding carbohydratesor other substances.
:
A
From the given options 'D' represents golgi complex. Golgi bodies are the organelles which modifies proteins by adding carbohydratesor other substances.
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