Neet Questions Cell The Unit Of Life

Chapter 8, Cell: The Unit of Life from Unit 3, Cell: Structure and Function is an important chapter for NEET preparation. Get access and learn the most important questions from this chapter of Class 11.

Important NEET Questions on Class 11 Chapter 8: Cell - The Unit Of Life

Which cell organelle is responsible for extracting energy from carbohydrates to form ATP (NEET 2017)?

A. Lysosome

B. Ribosome

C. Chloroplast

D. Mitochondrion

None of the above

A. Mycoplasma is a wall-less microorganism.

B. Pili and Fimbriae are mainly involved in the motility of bacterial cells.

C. The bacterial cell wall is composed of peptidoglycan

D. Cyanobacteria do not possess flagellated cells.

3. According to the Fluid Mosaic Model, the plasma membrane is composed of (1998)

A. Phospholipids and Integral Proteins

B. Phospholipids, Extrinsic Proteins, and Intrinsic Proteins

C. Phospholipids and Hemicellulose

D. Phospholipids and Oligosaccharides

Which of the following is true about the cell membrane (2012)?

  • It is a selectively permeable barrier
  • It is made of proteins
  • It is found in both prokaryotic and eukaryotic cells
  • All of the above

A. Lipids are arranged in a bilayer with polar heads towards the inner part

B. Na+ and K+ ions move across cell membrane through passive transport

The Fluid Mosaic Model of the cell membrane was proposed by Singer and Nicolson in 1972.

D. Proteins comprise 60-70% of cell membranes

The transport pathway between two adjacent cells is an effective structure, according to a study in 2010.

A. Plasmalemma

B. Plastoquinones

C. Plasmodesmata

D. Endoplasmic Reticulum

The Chemiosmotic Theory of ATP Synthesis in Chloroplasts and Mitochondria was Proposed in 2005

A. Proton Gradient

B. Accumulation of Na ions

C. Accumulation of K Ions

D. Membrane Potential

The telomeres of eukaryotic chromosomes consist of short sequences of nucleotides, as was first discovered in 2004.

A. Guanine Rich Repeats

B. Thymine Rich Repeats

C. Cytosine Rich Repeats

D. adenine rich repeats

Cellular Totipotency was demonstrated by Thompson et al. (2003)

A. Only bacterial cells

B. All Eukaryotic Cells

C. all plant cells

D. only gymnosperm cells

A study in 2000 found that this ribosome was involved in protein synthesis in animal cells.

A. Ribosomes of the Cytosol

B. Ribosomes which occur on the nuclear membrane and the Endoplasmic Reticulum (ER)

C. Ribosomes of Mitochondria and Cytosol

D. Ribosomes of the Nucleolus and Cytosol

10. This statement on cilia is incorrect (2006)

A. Microtubules of cilia are composed of tubulin

B. The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane

C. Cilia contains an outer ring of nine doublet microtubules surrounding two singlet microtubules.

D. Cilia are hair-like cellular appendages.

Question Answer Key

| 1 | D |

| 2 | B |

| 3 | B |

| 4 | C |

| 5 | C |

| 6 | A |

| 7 | A |

| 8 | C |

| 9 | B |

| 10 | B |

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