MCQOPTIONS
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MCQOPTIONS
This section includes 81 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Carbohydrates present in cell membrane are generally ___________ |
| A. | Monosaccharides |
| B. | Disachharides |
| C. | Oligosaccharides |
| D. | Polysaccharides |
| Answer» D. Polysaccharides | |
| 52. |
Local anesthetics act by _____________ the ion channels. |
| A. | inactivating |
| B. | opening |
| C. | closing |
| D. | mutating |
| Answer» D. mutating | |
| 53. |
The model of a lipid bilayer lined by a layer of protein molecules on both sides was put forward by _____ |
| A. | Davson and Danielli |
| B. | Singer and Nicolson |
| C. | Watson and Crick |
| D. | None of the mentioned |
| Answer» B. Singer and Nicolson | |
| 54. |
Plasmolysis occurs in __________ |
| A. | Hypertonic solution |
| B. | Hypotonic solution |
| C. | Both hypotonic and hypertonic solution |
| D. | Isotonic solution |
| Answer» B. Hypotonic solution | |
| 55. |
Hydropathy plot helps to _______________ |
| A. | Identify hydrophobic amino acids |
| B. | Determine arrangement of amino acids in a transmembrane protein |
| C. | Provides an average hydrophobicity of short peptide segments |
| D. | All of the mentioned |
| Answer» E. | |
| 56. |
Integral proteins are also known as ____________ |
| A. | Intrinsic proteins |
| B. | Glycosylated proteins |
| C. | Transmembrane proteins |
| D. | Bilayer proteins |
| Answer» D. Bilayer proteins | |
| 57. |
Which of the following is exoplasmic? |
| A. | Phosphatidyl choline |
| B. | Phosphatidyl serine |
| C. | Phosphatidyl ethanolamine |
| D. | Phosphatidyl inositol |
| Answer» B. Phosphatidyl serine | |
| 58. |
Which of the following channels depend on forces such as stretch tension applied on the membrane? |
| A. | Voltage-gated channels |
| B. | Mechano-gated channels |
| C. | Ligand-gated channels |
| D. | Tension-gated channels |
| Answer» C. Ligand-gated channels | |
| 59. |
Lipid rafts are ___________ |
| A. | Patches of glycoproteins in the lipid bilayer |
| B. | Patches of cholesterol and sphingolipids in lipid bilayer |
| C. | Patches of only cholesterol in lipid bilayers |
| D. | Detached patches of proteins floating on the lipid bilayer |
| Answer» C. Patches of only cholesterol in lipid bilayers | |
| 60. |
GLUT1 is an example of ______________ |
| A. | Channel protein |
| B. | Facilitative transporter |
| C. | Active transporter |
| D. | Lipid-anchored protein |
| Answer» C. Active transporter | |
| 61. |
Action potential can only flow in the forward direction. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 62. |
Shingolipids is the derivative of ______________ |
| A. | Sphingosine |
| B. | Shingomycin |
| C. | Sphingoceramicin |
| D. | Sphingolipid polymer |
| Answer» B. Shingomycin | |
| 63. |
The concept of transmembrane proteins was obtained from the results of which technique? |
| A. | Freeze-fraction replication |
| B. | Freeze-fracture replication |
| C. | Fraction replication |
| D. | None of the mentioned |
| Answer» C. Fraction replication | |
| 64. |
The transport of water molecules from a solution to the cell cytoplasm occurs in _________ |
| A. | Hypertonic solution |
| B. | Hypotonic solution |
| C. | Isotonic solution |
| D. | All of the mentioned |
| Answer» C. Isotonic solution | |
| 65. |
Which phenomena are made use of in the technique FRAP? |
| A. | electrostatic |
| B. | photothermal |
| C. | hybridization |
| D. | fluorescence |
| Answer» E. | |
| 66. |
Cell fusion can be performed on two cells from different species. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 67. |
Which of the following occurs in the membrane, when the temperature is lowered? |
| A. | denaturation |
| B. | desaturation |
| C. | saccharification |
| D. | glycolysis |
| Answer» C. saccharification | |
| 68. |
Lipid rafts are patches of cholesterol and ________________ |
| A. | carbohydrates |
| B. | amino acids |
| C. | lipids |
| D. | sphingolipids |
| Answer» E. | |
| 69. |
The channel in a membrane protein by which an ion or molecule can be transported in and out of the cell membrane is known as ___________ |
| A. | Permeation pathway |
| B. | Permeate channel |
| C. | Permeation channel |
| D. | Channel pathway |
| Answer» B. Permeate channel | |
| 70. |
GPI- anchored proteins show particular affinity towards ________ |
| A. | Cholesterol |
| B. | Hydrophobic tail |
| C. | Lipid rafts |
| D. | Phosphatidylserine |
| Answer» D. Phosphatidylserine | |
| 71. |
The ratio of Na⁺ and K⁺ transported by Na⁺/K⁺-ATPase pump is ___________ |
| A. | 1:1 |
| B. | 2:1 |
| C. | 2:3 |
| D. | 3:2 |
| Answer» E. | |
| 72. |
Which of the following facilitates binding of positively charged amino acid residues? |
| A. | Phosphatidyl choline (PC) |
| B. | Phosphatidyl serine (PS) |
| C. | Phosphatidyl ethanolamine (PE) |
| D. | Phosphatidyl inositol(PI) |
| Answer» C. Phosphatidyl ethanolamine (PE) | |
| 73. |
Saltatory conduction occurs due to _______________ |
| A. | axon hillock |
| B. | soma |
| C. | myelin sheath |
| D. | nodes of ranvier |
| Answer» D. nodes of ranvier | |
| 74. |
Which of the following is covalently attached to a lipid molecule in cell membrane? |
| A. | Integral protein |
| B. | Transmembrane protein |
| C. | Peripheral protein |
| D. | Lipid-anchored protein |
| Answer» E. | |
| 75. |
The phosphoglycerides in cell membrane are of the _________ type. |
| A. | Triglyceride |
| B. | Diglyceride |
| C. | Monoglyceride |
| D. | Polyglyceride |
| Answer» C. Monoglyceride | |
| 76. |
Halobacterium salinarium uses the following for the active transport of ions to induce purple colour. |
| A. | Light energy |
| B. | ATP |
| C. | Voltage |
| D. | Chemical energy |
| Answer» B. ATP | |
| 77. |
Cytosol is the same as cytoplasm. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 78. |
Which of the following is allowed in context with a plasma membrane? |
| A. | Inversion |
| B. | Transportation |
| C. | Transversion |
| D. | Transformation |
| Answer» C. Transversion | |
| 79. |
Which type of molecules are involved in responding to external signals received by the cell? |
| A. | Enzymes |
| B. | Nucleic acids |
| C. | Genes |
| D. | Receptors |
| Answer» E. | |
| 80. |
One of the main functions of plasma membranes is to enclose the contents of _____________ |
| A. | cell |
| B. | organism |
| C. | bones |
| D. | tissue |
| Answer» B. organism | |
| 81. |
The parts in the figure are a)__________, b)_____________, c)___________, d)____________. |
| A. | dendrites, soma, myelin sheath, nodes of ranvier |
| B. | dendrites, soma, cell body, axon hillock, myelin sheath |
| C. | soma, axon hillock, myelin sheath, dendrites |
| D. | soma, axon hillock, axon, dendrites |
| Answer» B. dendrites, soma, cell body, axon hillock, myelin sheath | |