Cell the Unit of Life - NCERT Based MCQ Questions for NEET

This article contains NCERT based 45 MCQ questions test on Biology chapter "Cell : The Unit of Life". These questions are highly valuable for the NEET exam. You can attempt these questions in the form of an interactive quiz and calculate your score. Read the below quiz rules carefully before you start

General Instructions

• Quiz contains 45 questions of 4 marks each.
• Correct answer (✔) will award you +4 marks and Incorrect answer (✘) will give you -1 mark.
• Total test is of 180 marks.
• Tap on box in order to select any option that you think is correct.
• Press the Submit button given in the end of quiz to calculate your score.
• There is a PDF file attached in the end of quiz. You can see detailed solutions to all questions and do self analysis from that file as well. 

Question 1. The cellular structure that is involved in producing ATP during aerobic respiration is the

(1) nucleus

(2) nucleolus

(3) chloroplast

(4) mitochondrion

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Question 2. Which of the following cellular structures are common to both prokaryotes and eukaryotes?

(1) Ribosomes

(2) Nucleoli

(3) Chloroplasts

(4) Mitochondria

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Question 3. The plasma membrane consists principally of

(1) proteins embedded in a carbohydrate bilayer

(2) phospholipids embedded in a protein bilayer

(3) proteins embedded in a phospholipid bilayer

(4) proteins embedded in a nucleic acid bilayer

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Question 4. All of the following characterize microtubules

EXCEPT:

(1) They are made of the protein tubulin.

(2) They are involved in providing motility.

(3) They are organized by basal bodies or centrioles.

(4) They develop from the plasma membrane.

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Question 5. Lysosomes are

(1) involved in the production of fats

(2) involved in the production of proteins

(3) involved in the production of polysaccharides

(4) involved in the degradation of cellular substances

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Question 6. Mitochondria

(1) are found only in animal cells

(2) produce energy (ATP) with the aid of sunlight

(3) are often more numerous near areas of major

cellular activity

(4) originate from centrioles

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Question 7. Plant and animal cells differ mostly in that

(1) only animal cells have mitochondria.

(2) only animal cells have flagella and cilia with a “9 + 2” microtubule arrangement.

(3) only plant cells have plasma membranes with cholesterol.

(4) only plant cells have cell walls.

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Question 8. A smooth endoplasmic reticulum exhibits all of the following activities EXCEPT:

(1) assembling amino acids to make proteins

(2) manufacturing lipids

(3) manufacturing hormones

(4) breaking down toxins

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Question 9. All of the following are known to be components of cell walls EXCEPT:

(1) actin

(2) chitin

(3) polysaccharides

(4) cellulose

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Question 10. Which of the following statements concerning prokaryotic and eukaryotic cells is not correct?

(1) Prokaryotic cells lack a membrane-bound nucleus.

(2) Prokaryotic cells contain small membrane-enclosed organelles.

(3) Eukaryotic cells contain a membrane-bound nucleus.

(4) DNA, or deoxyribonucleic acid, is present in both prokaryotic cells and eukaryotic cells.

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Question 11. Prokaryotic and eukaryotic cells generally have which of the following features in common?

(1) a membrane-bounded nucleus

(2) a cell wall made of cellulose

(3) ribosomes

(4) flagella or cilia that contain microtubules

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Question 12. All of the following are part of a prokaryotic cell except

(1) DNA

(2) a cell wall.

(3) a plasma membrane.

(4) an endoplasmic reticulum.

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Question 13. Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?

(1) lipids

(2) starches

(3) proteins

(4) steroids

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Question 14. Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and steroids?

(1) ribosome

(2) lysosome

(3) smooth endoplasmic reticulum

(4) mitochondrion

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Question 15. Which structure is the site of the synthesis of proteins that may be exported from the cell?

(1) rough ER

(2) lysosomes

(3) plasmodesmata

(4) Golgi vesicles

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Question 16. In animal cells, hydrolytic enzymes are packaged to prevent general destruction of cellular components. Which of the following organelles functions in this compartmentalization?

(1) chloroplast

(2) lysosome

(3) central vacuole

(4) peroxisome

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Question 17. The liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells?

(1) rough ER

(2) smooth ER

(3) Golgi apparatus

(4) Nuclear envelope

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Question 18. Which of the following produces and modifies polysaccharides that will be secreted?

(1) lysosome

(2) vacuole

(3) mitochondrion

(4) Golgi apparatus

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Question 19. Which of the following contains hydrolytic enzymes?

(1) lysosome

(2) vacuole

(3) mitochondrion

(4) Golgi apparatus

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Question 20. Which of the following is a compartment that often takes up much of the volume of a plant cell?

(1) lysosome

(2) vacuole

(3) mitochondrion

(4) Golgi apparatus

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Question 21. Which is one of the main energy transformers of cells?

(1) lysosome

(2) vacuole

(3) mitochondrion

(4) Golgi apparatus

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Question 22. Which of the following contains its own DNA and ribosomes?

(1) lysosome

(2) vacuole

(3) mitochondrion

(4) Golgi apparatus

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Question 23. Organelles other than the nucleus that contain DNA include

(1) ribosomes

(2) mitochondria

(3) chloroplasts

(4) 2 and 3 only

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Question 24. The mitochondrion, like the nucleus, has two or more membrane layers. How is the innermost of these layers different from that of the nucleus?

(1) The inner mitochondrial membrane is highly folded.

(2) The two membranes are biochemically very different.

(3) The space between the two layers of the nuclear membrane is larger.

(4) The inner membrane of the mitochondrion is separated out into thylakoids.

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Question 25. Why isn’t the mitochondrion classified as part of the endomembrane system?

(1) It only has two membrane layers.

(2) Its structure is not derived from the ER.

(3) It has too many vesicles.

(4) It is not involved in protein synthesis.

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Question 26. Cells can be described as having a cytoskeleton of internal structures that contribute to the shape, organization, and movement of the cell. Which of the following are part of the cytoskeleton?

(1) the nuclear envelope

(2) mitochondria

(3) microfilaments

(4) lysosomes

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Question 27. Which of the following contain the 9 + 2 arrangement of microtubules?

(1) cilia

(2) centrioles

(3) flagella

(4) 1 and 3 only

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Question 28. Cells require which of the following to form cilia or flagella?

(1) centrosomes

(2) ribosomes

(3) actin

(4) 1 and 2 only

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Question 29. Which statement correctly characterizes bound ribosomes?

(1) Bound ribosomes are enclosed in their own membrane.

(2) Bound and free ribosomes are structurally different.

(3) Bound ribosomes generally synthesize membrane proteins and secretory proteins.

(4) The most common location for bound ribosomes is the cytoplasmic surface of the plasma membrane.

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Question 30. Who proposed that the membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids?

(1) H. Davson and J. Danielli

(2) I. Langmuir

(3) C. Overton

(4) S. Singer and G. Nicolson

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Question 31. In the years since the proposal of the fluid mosaic model of the cell membrane, which of the following observations has been added to the model?

(1) The membrane is only fluid across a very narrow temperature range.

(2) Proteins rarely move, even though they possibly can do so.

(3) Unsaturated lipids are excluded from the membranes.

(4) The concentration of protein molecules is now known to be much higher.

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Question 32. The movement of potassium into an animal cell requires

(1) low cellular concentrations of sodium.

(2) high cellular concentrations of potassium.

(3) an energy source such as ATP or a proton gradient.

(4) a cotransport protein.

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Question 33. Why are lipids and proteins free to move laterally in membranes?

(1) The interior of the membrane is filled with liquid water.

(2) There are no covalent bonds between lipid and protein in the membrane.

(3) Hydrophilic portions of the lipids are in the interior of the membrane.

(4) There are only weak hydrophobic interactions in the interior of the membrane.

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Question 34. According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly –

(1) spread in a continuous layer over the inner and outer surfaces of the membrane.

(2) confined to the hydrophobic core of the membrane.

(3) embedded in a lipid bilayer.

(4) randomly oriented in the membrane, with no fixed inside-outside polarity.

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Question 35. Which of the following processes includes all others?

(1) osmosis

(2) diffusion of a solute across a membrane

(3) facilitated diffusion

(4) passive transport

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Question 36. All of the following serve an important role in determining or maintaining the structure of plant cells. Which of the following are distinct from the others in their composition?

(1) microtubules

(2) microfilaments

(3) plant cell walls

(4) intermediate filaments

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Question 37. Which structure is common to plant and animal cells?

(1) chloroplast

(2) wall made of cellulose

(3) central vacuole

(4) mitochondrion

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Question 38. Which of the following relationships between cell structures and their respective functions is correct?

(1) cell wall: support, protection

(2) chloroplasts: chief sites of cellular respiration

(3) chromosomes: cytoskeleton of the nucleus

(4) ribosomes: secretion

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Question 39. Which one of these is not a eukaryote?

(1) Euglena

(2) Anabena

(3) Spirogyra

(4) Agaricus

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Question 40. Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the followings

i. Mycoplasma ii. Ostrich eggs

iii. Human RBC iv. Bacteria

Options:

(1) i, iv, iii & ii

(2) i, ii, iii & iv

(3) ii, i, iii & iv

(4) iii, ii, i & iv

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Question 41. Which of the following statements is true for a secretory cell?

(1) Golgi apparatus is absent

(2) Rough Endoplasmic Reticulum (RER) is easily observed in the cell

(3) Only Smooth Endoplasmic Reticulum (SER) is present

(4) Secretory granules are formed in nucleus.

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Question 42. The diagram of the ultrastructure of a plant cell is given below. Identify the function of the organelles labeled A, B, C, D, E in the diagram. 

(1) A = Site of photophosphorylation, B = Storage of cell sap; C = Intracellular transport, D = Site of oxidative phosphorylation; E = Principal director of macromolecular traffic

(2) A = Storage of cell sap, B = Site of oxidative phosphorylation, C = Principal director of macromolecular traffic, D = Site of photophosphorylation, E = Intracellular transport

(3) A = Intracellular transport, B = Site of oxidative phosphorylation C = Principal director of macromolecular traffic, D = Site of photophosphorylation, E = Storage of cell sap.

(4) A = Principal director of macromolecular traffic, B = Site of oxidative phosphorylation, C = Intracellular transport D = Site of photophosphorylation, E = Storage of cell sap.

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Question 43. An interconnecting membranous network of the cell composed of vesicles, flattened sacs and tubules is

(1) Endoplasmic reticulum

(2) Lysosome

(3) Nucleus

(4) Mitochondrion

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Question 44. Lysosomes are produced by

(1) Golgi complex

(2) Mitochondria

(3) Endoplasmic reticulum

(4) Leucoplasts

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Question 45. Which of the following statements is correct?

(1) Elaioplasts store starch whereas aleuroplasts store proteins.

(2) Acrocentric chromosomes have only one arm.

(3) The core of cilium or flagellum is the basal body.

(4) Membranous extensions into the cytoplasm in cyanobacteria which contain pigments are called chromatophores.

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Detailed Solutions

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