NTSE Biology Cell MCQs

Question: 1 (millimicron) is :-

• a) 10-⁵ mm
• b) 10^-6 mm
• c) 10^-7 mm
• d) 10^-8 mm

Answer: 10^-6 mm

Question: Size of Acetabularia is :

• a) 10 cm
• b) 10 mm
• c) 1.0 mm
• d) 0.1 mm

Answer: 10 cm

Question: A plant cell having a cellulose wall, a thin lining of cytoplasm with a large vacuole but lacks nucleus, mitochondria plastic etc. and it still living. It is part of complex permanent tissue. The cell is :

• a) Companion cell
• b) Sieve cell
• c) Tracheid
• d) Sclerenchyma fiber

Answer: Sieve cell

Question: The term protoplasm was coined by -

• a) Huxley
• b) Purkinje
• c) Dujardin
• d) Schultze

Answer: Purkinje

Question: Dictyosome are -

• a) Respiratory particlest
• b) Liver cells
• c) Golgi bodies
• d) Related to protein synthesis

Answer: Golgi bodies

Question: Centriole is associated with

• a) DNA synthesis
• b) Reproduction
• c) Spindle formation
• d) Respiration

Answer: Spindle formation

Question: Chemical nature of ribosomes is

• a) Beta galactosidase
• b) Proteins and lipids
• c) Glucose and sucrose
• d) Proteins and RNA

Answer: Proteins and RNA

Question: If all mitochondria are removed from the cell

• a) Nothing happens
• b) Energy metabolism of cell gets reduced
• c) The cell cannot reproduce
• d) Leaves become white

Answer: Energy metabolism of cell gets reduced

Question: Which of the following is not the correct pairing of structure with function ?

• a) Golgi complex : breakdown of complex molecules
• b) Mitochondria : Production of ATP
• c) Endoplasmic reticulum : synthesis of proteins
• d) Chloroplast : photosynthesis

Answer: Golgi complex : breakdown of complex molecules

Question: Which of the following will comprise the most appropriate distinction of prokaryotic cells to distinguish them from eukaryotic cells ?

• a) Lack of DNA and nuclei
• b) Having dispersed DNA without a bounding nuclear membrane and by their lack of membrane bound organelles like plastids and mitochondria
• c) Biochemistry being fundamentally different
• d) Lack of ribosomes

Answer: Having dispersed DNA without a bounding nuclear membrane and by their lack of membrane bound organelles like plastids and mitochondria

More Questions..............

Question: When green tomatoes turn red then

• a) New chloroplasts are made
• b) Chromoplasts are changed into chloroplasts
• c) Chloroplasts are disintegrated and get converted into chromoplasts
• d) None of these

Answer: Chloroplasts are disintegrated and get converted into chromoplasts

Question: Which of the following pairs is mismatched ?

• a) Nucles : ribosomal RNA
• b) Nucles : DNA replication
• c) Lysosome : protein synthesis
• d) Cytoskeleton : microtubules

Answer: Lysosome : protein synthesis

Question: Prokaryotic cells is one, which does not have

• a) Proper nucleus
• b) Mitochondria Golgi bodies
• c) Nucleolus in their nucleus
• d) A, B and C and are correct

Answer: A, B and C and are correct

Question: If all ribosomes are removed from a prokaryotic cell, following function/s will be hindered

• a) Lipid and steroid synthesis
• b) Storage of food material
• c) Protein synthesis
• d) Removal of ribosomes do not affect the functioning of cell

Answer: Protein synthesis

Question: Electron Microscope was discovered by

• a) Robert Hooke
• b) Knoll and Ruska
• c) Robert Brown
• d) Janssen

Answer: Knoll and Ruska

Question: Cells which loose their nucleus during differentiation are

• a) Nerve cells
• b) Muscle cells
• c) Red blood cells
• d) White blood cells

Answer: Red blood cells

Question: Double membrane is absent in

• a) Mitochondria
• b) Chloroplast
• c) Nucleus
• d) Lysosomes

Answer: Lysosomes

Question: Golgi apparatus is absent in

• a) Liver cells
• b) Higher plants
• c) Blue green alga
• d) Yeast

Answer: Blue green alga

Question: Cilia and flagella helps in

• a) Movement
• b) Digestion
• c) Respiration
• d) None of these

Answer: Movement

Question: Proteins that are to b used outside the cell are synthesized

• a) in the mitochondria
• b) on the rough endoplasmic reticulum
• c) on the mitochondria
• d) on free ribosomes

Answer: on the rough endoplasmic reticulum

Question: Bimolecular are

• a) Inorganic
• b) Organic
• c) Vital
• d) Both A and B

Answer: Both A and B

Question: All organic substances possess

• a) Carbon, hydrogen
• b) Carbon, oxygen and nitrogen
• c) Carbon, hydrogen and oxygen
• d) Carbon, hydrogen, oxygen and nitrogen

Answer: Carbon, hydrogen and oxygen

Question: Cellular macromolecules are

• a) lipids, water, minerals and sugars
• b) glycogen, amino acids, minerals and nucleotides
• c) water, minerals, nucleic acids, amino acids and nucleotides
• d) sugar’s water, minerals, proteins and nucleotides

Answer: lipids, water, minerals and sugars

Question: Primary elements are

• a) P,S
• b) N,C
• c) N,P,K
• d) C,H

Answer: N,P,K