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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 5901. |
Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong [AIIMS 2005] |
| A. | Lysosomes are double membraned vesicles budded off from golgi apparatus and contain digestive enzymes |
| B. | Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion |
| C. | Leucoplast are bound by two membranes lack pigment but contain their own DNA and protein synthesizing machinery |
| D. | Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids |
| Answer» B. Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion | |
| 5902. |
Ribosome mainly has [DPMT 2004] |
| A. | DNA |
| B. | RNA |
| C. | Carbohydrate |
| D. | None of these |
| Answer» C. Carbohydrate | |
| 5903. |
Ribosomes that occur exclusively in mitochondria is [DPMT 2004] |
| A. | 70S |
| B. | 55S |
| C. | 30S |
| D. | 50S |
| Answer» C. 30S | |
| 5904. |
What would happen if lysosomes get ruptured inside the cells in which they are present [MP PMT 1997] |
| A. | Cells will swell |
| B. | Cells will shrink |
| C. | Cells will die |
| D. | Nothing would happen |
| Answer» D. Nothing would happen | |
| 5905. |
The bacterial ribosomes are of [MP PMT 1994; J&K CET 2002; Kerala PMT 2004] |
| A. | 50 S type |
| B. | 70 S type |
| C. | 30 S type |
| D. | 80 S type |
| Answer» C. 30 S type | |
| 5906. |
The site of protein synthesis in plants is the [CPMT 1986, 94; MP PMT 1994, 95, 2003; MDAT Bihar 1995; KCET 1999; CBSE PMT 1999; BVP 2001; BHU 2004; J & K CET 2005] |
| A. | Chloroplast |
| B. | Ribosomes |
| C. | Pyrenoids |
| D. | Mitochondria |
| Answer» C. Pyrenoids | |
| 5907. |
The functional unit in the synthesis of protein is [MP PMT 1994; CBSE PMT 1999] |
| A. | Peroxisome |
| B. | Dictyosome |
| C. | Lysosome |
| D. | Polysome |
| Answer» E. | |
| 5908. |
Ribosomes of bacteria, mitochondria, prokaryotes and chloroplast are of [BHU 1985; DPMT 1984; MHCET 2001] |
| A. | 50 S type |
| B. | 80 S type |
| C. | 70 S type |
| D. | 30 S type |
| Answer» D. 30 S type | |
| 5909. |
Below a certain level of\[M{{g}^{++}}\]the two sub units of the ribosome |
| A. | Separates |
| B. | Fuses |
| C. | Divides |
| D. | None of these |
| Answer» B. Fuses | |
| 5910. |
Polyribosomes are aggregation of [DPMT 1984; BHU 1985, 88] |
| A. | Ribosomes and rRNA |
| B. | Only rRNA |
| C. | Peroxisomes |
| D. | Several ribosomes held together by a stearing of mRNA |
| Answer» E. | |
| 5911. |
Ribosomes are made up of [BHU 1987; CPMT 1984; MP PMT 1995, 98; BVP 2002; CPMT 2004] |
| A. | DNA and protein |
| B. | DNA alone |
| C. | RNA and protein |
| D. | RNA and DNA |
| Answer» D. RNA and DNA | |
| 5912. |
Ribosomes are attached to E.R. through [CPMT 1985] |
| A. | Riboplasm |
| B. | rRNA |
| C. | tRNA |
| D. | Hydrophobic interaction |
| Answer» E. | |
| 5913. |
What is the normal diameter of ribosomes |
| A. | \[\text{75}\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| B. | \[\text{100}\,\,\text{to}\,\,\text{200}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| C. | \[\text{200}\,\,\text{to}\,\,\text{300}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| D. | \[\text{500}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| Answer» D. \[\text{500}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] | |
| 5914. |
Scavenging of worn out cell parts and denatured proteins in the cells is done by |
| A. | Vacuoles |
| B. | Golgi bodies |
| C. | Lysosomes |
| D. | Endoplasmic reticulum |
| Answer» D. Endoplasmic reticulum | |
| 5915. |
Which of the following pairs is correct [CBSE PMT 1993] |
| A. | Svedberg unit ? Biomembranes |
| B. | Polyribosomes ? RNA |
| C. | Dictyosomes ? Suicidal sacs |
| D. | Cisternae ? Mitochondria |
| Answer» C. Dictyosomes ? Suicidal sacs | |
| 5916. |
Which of the following structures carries out a similar function in both plant and animal cell |
| A. | Chloroplasts |
| B. | Ribosomes |
| C. | Cell wall |
| D. | Contractile vacuoles |
| Answer» C. Cell wall | |
| 5917. |
70S type of ribosome shows two units whose sedimentation constants are [Orissa PMT 2002] |
| A. | 40 S and 30 S |
| B. | 50 S and 20 S |
| C. | 50 S and 30 S |
| D. | 60 S and 20 S |
| Answer» D. 60 S and 20 S | |
| 5918. |
Which of the following organelles is present in bacterial cell |
| A. | Mitochondria |
| B. | Ribosomes |
| C. | Golgi complex |
| D. | Endoplasmic reticulum |
| Answer» C. Golgi complex | |
| 5919. |
In prokaryotic ribosome RNA - protein ratio is |
| A. | 0.0840277777777778 |
| B. | 0.0423611111111111 |
| C. | 0.125694444444444 |
| D. | None of these |
| Answer» B. 0.0423611111111111 | |
| 5920. |
Ribosomes are found in [MP PMT 2005] |
| A. | Cytoplasm |
| B. | Nucleus |
| C. | Cell wall |
| D. | Golgibody |
| Answer» B. Nucleus | |
| 5921. |
If all the ribosomes of a cell are destroyed [DPMT 1987] |
| A. | Respiration will not take place |
| B. | Photosynthesis will not occur |
| C. | Fat will not be stored |
| D. | Protein will not be formed |
| Answer» E. | |
| 5922. |
Non-membranous cell organelles are [MP PMT 1997; BVP 2004] |
| A. | Mitochondria |
| B. | Endoplasmic reticulum |
| C. | Ribosomes |
| D. | Ribosomes and centrioles |
| Answer» E. | |
| 5923. |
Which of the following affects the association and dissociation of sub-units of ribosomes [RPMT 2001] |
| A. | Mg |
| B. | Ca |
| C. | Fe |
| D. | K |
| Answer» B. Ca | |
| 5924. |
The main function of lysosomes is [MP PMT 1999, 2002] |
| A. | Digestion |
| B. | Replication |
| C. | Translation |
| D. | Translocation |
| Answer» B. Replication | |
| 5925. |
Which of the following cell organelle lacks DNA and bounding membrane [AFMC 2002] |
| A. | Ribosome |
| B. | Plastid |
| C. | Nucleolus |
| D. | Plasmid |
| Answer» B. Plastid | |
| 5926. |
Which of the following organelle is called as "protein factory of the cell'' |
| A. | Lysosome |
| B. | Mitochondria |
| C. | Golgi body |
| D. | Ribosome |
| Answer» E. | |
| 5927. |
The 80S ribosomes are present in [MP PMT 1996; CPMT 1998] |
| A. | Eucaryotic cells |
| B. | Procaryotic cells |
| C. | Bacterial cells |
| D. | Cyanobacterial cells |
| Answer» B. Procaryotic cells | |
| 5928. |
'Palade granules' are |
| A. | Ribosomes |
| B. | Microbodies |
| C. | Sulphur granules |
| D. | Lipid granules |
| Answer» B. Microbodies | |
| 5929. |
Which type of ribosomes are found in Nostoc cells [MP PMT 1999] |
| A. | 50 S |
| B. | 60 S |
| C. | 70 S |
| D. | Eukaryotic |
| Answer» D. Eukaryotic | |
| 5930. |
The larger sub-unit in 80 S ribosome is [MP PMT 1999] |
| A. | 50 S |
| B. | 60 S |
| C. | 40 S |
| D. | 0 S |
| Answer» C. 40 S | |
| 5931. |
Which of the following statements is wrong for ribosomes [RPMT 1999] |
| A. | Formed by two-sub units |
| B. | Formed by ribo-protein |
| C. | Formed in chain |
| D. | Both sub-units are bounded by a membrane |
| Answer» E. | |
| 5932. |
Who discovered "ribosomes'' in animal cells [CPMT 1990; BHU 2001] |
| A. | Watson |
| B. | Talvim |
| C. | Cowdry |
| D. | Palade |
| Answer» E. | |
| 5933. |
Which of the following cell organelles is having single layered unit membrane [DPMT 1984; CPMT 1984; MP PMT 1995, 98; RPMT 1995; CBSE PMT 2001; CPMT 2005; J & K CET 2005] |
| A. | Centrosome |
| B. | Lysosome |
| C. | Mesosome |
| D. | Nucleus |
| Answer» C. Mesosome | |
| 5934. |
Which of the following statements is incorrect with reference to lysosomes [JIPMER 2002] |
| A. | They are filled acid hydrolase and other enzymes |
| B. | They are monomorphic and uniform in structure and function |
| C. | They may be autophagic |
| D. | They can digest proteins, nuclei acids, lipids and polysaccharides |
| Answer» C. They may be autophagic | |
| 5935. |
A lysosome in which intracellular organells is digested is called |
| A. | Primary lysosome |
| B. | Secondary lysosome |
| C. | Autophagosome |
| D. | None of the above |
| Answer» D. None of the above | |
| 5936. |
Lysosomes are generally found in |
| A. | Animal cells |
| B. | Plant cells |
| C. | Both (a) and (b) |
| D. | Bacterial cells |
| Answer» B. Plant cells | |
| 5937. |
Secondary lysosomes are also called [BHU 1991] |
| A. | Autophagic vacuoles |
| B. | Lipofuscin granules |
| C. | Residual body |
| D. | Heterophagosomes |
| Answer» E. | |
| 5938. |
Lysosomes are known as suicidal bags because of [BHU 1983, 99; CPMT 1980, 91; RPMT 1999; CBSE PMT 2000; MP PMT 2003; HP PMT 2005] |
| A. | Catalytic enzymes |
| B. | Hydrolytic enzymes |
| C. | Parasitic on nucleus |
| D. | Proteolytic enzymes |
| Answer» C. Parasitic on nucleus | |
| 5939. |
Lysosome along with the food content is called [JIPMER 1993] |
| A. | Primary lysosome |
| B. | Secondary lysosome |
| C. | Residual bodies |
| D. | Cytosome |
| Answer» C. Residual bodies | |
| 5940. |
Which is concerned with autolysis [BVP 2004] |
| A. | Ribosome |
| B. | Golgi bodies |
| C. | Lysosome |
| D. | Oxysome |
| Answer» D. Oxysome | |
| 5941. |
The cellular role for lysosome is not |
| A. | Ingestion of foreign bodies |
| B. | Digestion of aged organelles |
| C. | Cell destruction during development |
| D. | Osmoregulation |
| Answer» E. | |
| 5942. |
The organelles whose major function is storage of hydrolytic enzymes are [DPMT 1986; CPMT 1987, 93, 98; MP PMT 1993, 2003; CBSE PMT 1996; BVP 2000; Haryana PMT 2005] |
| A. | Centrioles |
| B. | Chromoplasts |
| C. | Lysosomes |
| D. | Chloroplasts |
| Answer» D. Chloroplasts | |
| 5943. |
"Lysosomes'' were discovered by [Kashmir MEE 1995; CPMT 1996; MP PMT 2003] |
| A. | Haekel |
| B. | De Duve |
| C. | De Vries |
| D. | Purkinje |
| Answer» B. De Duve | |
| 5944. |
The liver stores food in the form of: |
| A. | ATP |
| B. | Glucose |
| C. | Glycogen |
| D. | Albumen |
| Answer» D. Albumen | |
| 5945. |
Food is kept as reserve in certain organs. Which is the correct organ? |
| A. | Liver |
| B. | Brain |
| C. | Kidney |
| D. | Spleen |
| Answer» B. Brain | |
| 5946. |
The level of glucose in the blood is controlled by: (Karnataka CET 2002) |
| A. | liver |
| B. | ileum |
| C. | duodenum |
| D. | gallbladder |
| Answer» B. ileum | |
| 5947. |
Kupffer cells are found in: (CPMT 2003) |
| A. | liver |
| B. | pancreas |
| C. | small intestine |
| D. | large intestine |
| Answer» B. pancreas | |
| 5948. |
When gall bladder of a man is removed: |
| A. | effect of pancreatic juice upon food is impaired |
| B. | acidity continues in duodenum |
| C. | fat digestion is not possible |
| D. | all of the above |
| Answer» E. | |
| 5949. |
Liver of a rabbit consists of: |
| A. | 2-lobes |
| B. | 3-lobes |
| C. | 4-lobes |
| D. | 5-lobes |
| Answer» E. | |
| 5950. |
Which of the following animals does not possess gall bladder? |
| A. | Dog |
| B. | Lion |
| C. | Horse |
| D. | Human |
| Answer» D. Human | |