In This Post we are  providing Chapter-8 Cell: The Unit Of Life NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON CELL: THE UNIT OF LIFE

Question 1 : Which one of the following combination is mismatched?

• a) Pili – Reproduction
• b) Cell wall – Protective, determines shape, prevents from bursting
• c) Flagella, Pili and Fimbriae – Surface structures of bacterial cell
• d) Glycocalyx – may be capsule or slime layer

Answer : Pili – Reproduction

Question 2 : The fluidity of membranes in a plant in cold weather may be maintained by

• a) increasing the number of phospholipids with unsaturated hydrocarbon tails
• b) increasing the proportion of integral proteins
• c) increasing concentration of cholesterol in membrane
• d) increasing the number of phospholipids with saturated hydrocarbon tail

Answer : increasing the number of phospholipids with unsaturated hydrocarbon tails

Question 3 : The cell as a basic unit of structure of living beings was discovered by

• a) Schleiden and Schwann
• b) Gregore Mendel
• c) Robert Hooke
• d) Aristotle

Answer : Schleiden and Schwann

Question 4 : Which pair of structures are usually found in both plant and animal cells?

• a) Cell membrane and nucleolus
• b) Cell membrane and cell wall
• c) Nucleolus and chloroplast
• d) Nucleus and cell wall

Answer : Cell membrane and nucleolus

Question 5: Most abundant lipid in the cell membrane is

• a) phospholipids
• b) cerebrosides
• c) glycolipids
• d) None of these

Answer : phospholipids

Question 6 :  Cell recognition and adhesion are facilitated by components of plasma membrane. These components are generally

• a) glycolipids and glycoproteins
• b) both lipids and proteins
• c) protein molecules alone
• d) None of these

Answer : glycolipids and glycoproteins

Question 7 : Smooth endoplasmic reticulum is well developed in the cells which synthesize

• a) steorids
• b) carbohydrates
• c) proteins
• d) all of these

Answer : steorids

Question 8 : Quasi-fluid nature of membrane is due to

• a) Phospholipid
• b) Peripheral protein
• c) Integral protein
• d) Sugar moiety

Answer : Phospholipid

Question 9 : Gas vacuole is present in

• a) All of the above
• b) Green photosynthetic bacteria
• c) Purple photosynthetic bacteria
• d) Blue green algae

Answer : All of the above

Question 10 : Which of the following feature is not associated with centrosome?

• a) Lipid bilayer covering
• b) Two centriole
• c) Two cylindrical structures
• d) Pericentriolar material

Answer : Lipid bilayer covering

Question 11 : What is the site of DNA and centriole duplication respectively

• a) Nucleus, cytoplasm
• b) Nucleus, nucleus
• c) Cytoplasm, nucleus
• d) Nucleus, nucleolous

Answer : Nucleus, cytoplasm

Question 12 : Cell wall

• a) All are correct
• b) Contains minerals like calcium carbonate in certain algae
• c) Helps in cell to cell interaction
• d) Helps in cell to cell interaction

Answer : All are correct

Question 13 : Golgi bodies are involved in

• a) All of the above
• b) Modification of proteins
• c) Synthesis of glycolipids
• d) Recycling of broken plasma membrane during endocytosis

Answer : All of the above

Question 14: Aleuroplasts, amyloplasts and elaioplasts

• a) Store protein, starch and fat respectively
• b) Help in photolysis of water
• c) Store reserve food and pigments
• d) Divide by multiple fission

Answer : Store protein, starch and fat respectively

Question 15 : Reformation of nucleolus, golgi complex and ER occurs in

• a) Anaphase
• b) Metaphase
• c) Both
• d) None of these

Answer : Anaphase