MCQOPTIONS
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MCQOPTIONS
This section includes 180 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. |
Which microscope was used by Anton van Leeuwenhoek? |
| A. | single-lens |
| B. | confocal microscope |
| C. | double-lens |
| D. | compound microscope |
| Answer» B. confocal microscope | |
| 52. |
Motor proteins help in regulation which activities in a cell? |
| A. | Mechanical |
| B. | Chemical |
| C. | Uptake |
| D. | Regulation |
| Answer» B. Chemical | |
| 53. |
An example of co-dominance is ____________ |
| A. | Mouse coat colour |
| B. | Human ABO blood group system |
| C. | Human hand size |
| D. | Human eye colour |
| Answer» C. Human hand size | |
| 54. |
Which of the following amino acids may or may not be protonated at neutral pH? |
| A. | Glutamate |
| B. | Lysine |
| C. | Histidine |
| D. | Arginine |
| Answer» D. Arginine | |
| 55. |
DNA denaturation can occur through ________ |
| A. | Unwinding of DNA double strand |
| B. | Absorbance of UV rays |
| C. | Decrease in hydrophobic interactions of base stacking |
| D. | All of the mentioned |
| Answer» E. | |
| 56. |
Biofilms are ________________ |
| A. | Thin polymeric films made of biopolymer |
| B. | Strings of protein filaments |
| C. | Complex, multispecies communities |
| D. | A metabolic product for prokaryotic organisms |
| Answer» D. A metabolic product for prokaryotic organisms | |
| 57. |
Which of the following enables a Dengue virus to affect human beings? |
| A. | RNA Polymerase enzyme |
| B. | DNA Polymerase enzyme |
| C. | Reverse Transcriptase enzyme |
| D. | Gyrase enzyme |
| Answer» D. Gyrase enzyme | |
| 58. |
Which of the following is not true for both prokaryotic and eukaryotic cells? |
| A. | Same composition of plasma membrane |
| B. | Both contain shared metabolic pathways |
| C. | Genetic information encoded in DNA with similar genetic code |
| D. | Both contain Golgi apparatus for protein trafficking |
| Answer» E. | |
| 59. |
The cell theory consists of how many tenets? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 60. |
Which of the following are a Gram negative bacteria? |
| A. | Neisseria gonorrheae |
| B. | Mycoplasma pneumonia |
| C. | Cornybacterium diptheriae |
| D. | Streptococcus pyogenes |
| Answer» B. Mycoplasma pneumonia | |
| 61. |
Exotoxins are produced by _______________ |
| A. | All prokaryotes |
| B. | Gram positive bacteria |
| C. | Gram negative bacteria |
| D. | Archaea |
| Answer» C. Gram negative bacteria | |
| 62. |
Which cells are found in the intestinal lining? |
| A. | Neurons |
| B. | Epithelial cells |
| C. | Hepatocytes |
| D. | RBCs |
| Answer» C. Hepatocytes | |
| 63. |
F-plasmid contains ______________ |
| A. | Only OriV |
| B. | Only OriT |
| C. | Both OriV and OriT |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 64. |
In anaerobic respiration, pyruvic acid is converted to _______ |
| A. | Lactate |
| B. | Acetyl CoA |
| C. | PEP |
| D. | Acetate |
| Answer» B. Acetyl CoA | |
| 65. |
Loops in lampbrush chromosomes represent site of _____________ |
| A. | Replication |
| B. | Transcription |
| C. | Cell division |
| D. | Crossing over |
| Answer» C. Cell division | |
| 66. |
An example of extensively polyploid organism is _________ |
| A. | Xenopus laevis |
| B. | Homo sapiens |
| C. | Drosophila melanogaster |
| D. | Equus caballus |
| Answer» B. Homo sapiens | |
| 67. |
NAD is a _________ |
| A. | enzyme |
| B. | cofactor |
| C. | protein |
| D. | nucleoside |
| Answer» C. protein | |
| 68. |
Exergonic processes are thermodynamically unfavorable. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 69. |
The genetic material of a prokaryote is present in the ______________ |
| A. | Nucleus |
| B. | Cytoplasm |
| C. | Nucleoid |
| D. | Plasmid |
| Answer» D. Plasmid | |
| 70. |
Which organelle is located at the basal end of epithelial cells lining the intestine? |
| A. | Mitochondria |
| B. | Nucleus |
| C. | Golgi complex |
| D. | Cilia |
| Answer» B. Nucleus | |
| 71. |
The expression of Holandric genes causes the following genetic trait ______________ |
| A. | Haemophilia |
| B. | Huntington’s disease |
| C. | Down’s syndrome |
| D. | Hypertrichosis |
| Answer» E. | |
| 72. |
Which of the following is the largest bacteriophage? |
| A. | T4 bacteriophage |
| B. | T6 bacteriophage |
| C. | Lambda phage |
| D. | T2 bacteriophage |
| Answer» B. T6 bacteriophage | |
| 73. |
German embryologist, Hans Driesch used which organism’s embryo in his studies? |
| A. | Star-fish |
| B. | Sea-urchin |
| C. | Whale |
| D. | Monkey |
| Answer» C. Whale | |
| 74. |
The sum total of all the chemical reactions taking place inside the cell, represent the cell’s _______________ |
| A. | Metabolism |
| B. | Catabolism |
| C. | Anabolism |
| D. | Regulation |
| Answer» B. Catabolism | |
| 75. |
Schleiden and Schwann believed that cells arise from non-cellular materials. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 76. |
Temperature at which most of human enzymes work best is approximately |
| A. | 85 °C |
| B. | 45 °C |
| C. | 25 °C |
| D. | 10 °C |
| Answer» C. 25 °C | |
| 77. |
Which of following can not be shown from a phylogenetic tree? |
| A. | phenotypic differences |
| B. | ancestry |
| C. | nearest common ancestor |
| D. | farthest common ancestor |
| Answer» B. ancestry | |
| 78. |
Which of following is largest unit of classification? |
| A. | phyla |
| B. | domain |
| C. | specie |
| D. | kingdom |
| Answer» C. specie | |
| 79. |
Canis lupus is scientific name for which of following? |
| A. | cat |
| B. | gray wolf |
| C. | coyote |
| D. | badger |
| Answer» C. coyote | |
| 80. |
Lutra is scientific name for which of following? |
| A. | tiger |
| B. | badger |
| C. | lion |
| D. | domestic cat |
| Answer» C. lion | |
| 81. |
Substrate is held on enzyme with help of which bond? |
| A. | nitrogen bond |
| B. | covalent bond |
| C. | hydrogen bond |
| D. | carbon bond |
| Answer» D. carbon bond | |
| 82. |
At which of following pH, enzyme pepsin works best? |
| A. | 10 |
| B. | 5 |
| C. | 9 |
| D. | 2 |
| Answer» E. | |
| 83. |
What is effect of enzymes on Activation energy? |
| A. | uses the energy |
| B. | lowers the energy |
| C. | increases the energy |
| D. | transfers the energy |
| Answer» C. increases the energy | |
| 84. |
Panthera Pardus is scientific name for which of following? |
| A. | domestic cat |
| B. | lion |
| C. | tiger |
| D. | leopard |
| Answer» E. | |
| 85. |
Taxidae taxis is scientific name for which of following? |
| A. | American badger |
| B. | jaguar |
| C. | lion |
| D. | tiger |
| Answer» B. jaguar | |
| 86. |
Which of following is a cnidarian? |
| A. | jelly fish |
| B. | Cary fish |
| C. | silver fish |
| D. | lobster |
| Answer» B. Cary fish | |
| 87. |
What is the approximate fraction of genetic variation in the nuclear genome that is expected to have a harmful effect on gene function? |
| A. | 50% |
| B. | 25% |
| C. | 10% |
| D. | 1% |
| Answer» E. | |
| 88. |
What happens to shape of enzyme during an enzymatic reaction? |
| A. | does not change |
| B. | changes drastically |
| C. | changes slightly |
| D. | turns upside down |
| Answer» D. turns upside down | |
| 89. |
At which of following pH, enzyme trypsin works best? |
| A. | 8 |
| B. | 9 |
| C. | 5 |
| D. | 6 |
| Answer» B. 9 | |
| 90. |
The method of DNA replication is _____________ |
| A. | conservative |
| B. | semi-conservative |
| C. | non-conservative |
| D. | disruptive |
| Answer» C. non-conservative | |
| 91. |
Geospiza fortis is found usually at which of following places? |
| A. | Iceland |
| B. | Finland |
| C. | Galapagos island |
| D. | India |
| Answer» D. India | |
| 92. |
Hybrid vigour is referred to __________ |
| A. | superior phenotype of a hybrid |
| B. | increased fertility of a hybrid |
| C. | increased mortality of a hybrid |
| D. | decreased function of a hybrid |
| Answer» B. increased fertility of a hybrid | |
| 93. |
The detailed tertiary structure of a protein is determined by the ___________ technique. |
| A. | HPLC |
| B. | Spectrometry |
| C. | X-ray |
| D. | X-ray crystallography |
| Answer» E. | |
| 94. |
Non-protein helpers of enzymes are called |
| A. | cofactors |
| B. | helpers |
| C. | assistors |
| D. | supporter |
| Answer» B. helpers | |
| 95. |
Yeast cells convert pyruvate to lactate. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 96. |
Allosteric site is same as enzyme’s active site. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 97. |
Which is the main building block of cilia? |
| A. | Tubulin |
| B. | Nexin |
| C. | Dyenin |
| D. | Actin |
| Answer» B. Nexin | |
| 98. |
Which of the following is not a protein denaturant? |
| A. | SDS |
| B. | Phenol |
| C. | DTT |
| D. | Acetic acid |
| Answer» E. | |
| 99. |
Which of the following polysaccharide is not present in the eukaryotic plant cell wall? |
| A. | Cellulose |
| B. | Chitin |
| C. | Hemicellulose |
| D. | Pectin |
| Answer» C. Hemicellulose | |
| 100. |
What is the process of synthesis of glucose by the liver is referred to as? |
| A. | gluconeogenesis |
| B. | neogenesis |
| C. | glycolysis |
| D. | saccharification |
| Answer» B. neogenesis | |