-
question_answer1)
"Lysosomes'' were discovered by [Kashmir MEE 1995; CPMT 1996; MP PMT 2003]
A)
Haekel done
clear
B)
De Duve done
clear
C)
De Vries done
clear
D)
Purkinje done
clear
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question_answer2)
Which of the following statements is incorrect with reference to lysosomes [JIPMER 2002]
A)
They are filled acid hydrolase and other enzymes done
clear
B)
They are monomorphic and uniform in structure and function done
clear
C)
They may be autophagic done
clear
D)
They can digest proteins, nuclei acids, lipids and polysaccharides done
clear
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question_answer3)
The main function of lysosomes is [MP PMT 1999, 2002]
A)
Digestion done
clear
B)
Replication done
clear
C)
Translation done
clear
D)
Translocation done
clear
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question_answer4)
Scavenging of worn out cell parts and denatured proteins in the cells is done by
A)
Vacuoles done
clear
B)
Golgi bodies done
clear
C)
Lysosomes done
clear
D)
Endoplasmic reticulum done
clear
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question_answer5)
What would happen if lysosomes get ruptured inside the cells in which they are present [MP PMT 1997]
A)
Cells will swell done
clear
B)
Cells will shrink done
clear
C)
Cells will die done
clear
D)
Nothing would happen done
clear
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question_answer6)
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 done
clear
B)
Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion done
clear
C)
Leucoplast are bound by two membranes lack pigment but contain their own DNA and protein synthesizing machinery done
clear
D)
Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids done
clear
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question_answer7)
Match List I and List II and select the correct answer using the code given below the list : List I List II a. Lysosome 1. Bacteria without cell walls b. Mycoplasma 2. A virus that infects bacterial cells c. Thylakoid 3. Flattened sacs in a chloroplast d. Bacteriophage 4. A vesicle in which hydrolytic enzymes are stored Code : [MP PMT 1993]
A)
a b c d 3 1 2 4 done
clear
B)
a b c d 4 1 3 2 done
clear
C)
a b c d 2 3 4 1 done
clear
D)
a b c d 1 4 2 3 done
clear
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question_answer8)
Microbodies differ from lysosomes in that
A)
Microbodies are surrounded by a single unit membrane while lysosome membrane is double done
clear
B)
Microbodies are surrounded by double membrane while lysosomes membrane is single unit done
clear
C)
Microbodies contain lytic enzymes while lysosomes do not done
clear
D)
Lysosome contain lytic enzymes while microbodies do not done
clear
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question_answer9)
Lysosomes are so called because these contain [MP PMT 1994]
A)
Carboxylating enzymes done
clear
B)
Respiratory enzymes done
clear
C)
Oxidizing enzymes done
clear
D)
Digestive enzymes done
clear
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question_answer10)
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 done
clear
B)
Chromoplasts done
clear
C)
Lysosomes done
clear
D)
Chloroplasts done
clear
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question_answer11)
The cellular role for lysosome is not
A)
Ingestion of foreign bodies done
clear
B)
Digestion of aged organelles done
clear
C)
Cell destruction during development done
clear
D)
Osmoregulation done
clear
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question_answer12)
Which is concerned with autolysis [BVP 2004]
A)
Ribosome done
clear
B)
Golgi bodies done
clear
C)
Lysosome done
clear
D)
Oxysome done
clear
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question_answer13)
Lysosome along with the food content is called [JIPMER 1993]
A)
Primary lysosome done
clear
B)
Secondary lysosome done
clear
C)
Residual bodies done
clear
D)
Cytosome done
clear
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question_answer14)
The cell organelle showing extensive polymorphism is [MHCET 2004]
A)
Dictyosomes done
clear
B)
Chloroplasts done
clear
C)
Lysosomes done
clear
D)
Ribosomes done
clear
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question_answer15)
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 done
clear
B)
Hydrolytic enzymes done
clear
C)
Parasitic on nucleus done
clear
D)
Proteolytic enzymes done
clear
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question_answer16)
Secondary lysosomes are also called [BHU 1991]
A)
Autophagic vacuoles done
clear
B)
Lipofuscin granules done
clear
C)
Residual body done
clear
D)
Heterophagosomes done
clear
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question_answer17)
The "marker'' enzyme of lysosome is [BHU 1991]
A)
Lysozyme (muramidase) done
clear
B)
Acid protease done
clear
C)
Acid phosphatase done
clear
D)
Beta-galactosidase done
clear
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question_answer18)
Lysosomes are generally found in
A)
Animal cells done
clear
B)
Plant cells done
clear
C)
Both (a) and (b) done
clear
D)
Bacterial cells done
clear
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question_answer19)
A lysosome in which intracellular organells is digested is called
A)
Primary lysosome done
clear
B)
Secondary lysosome done
clear
C)
Autophagosome done
clear
D)
None of the above done
clear
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question_answer20)
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 done
clear
B)
Lysosome done
clear
C)
Mesosome done
clear
D)
Nucleus done
clear
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question_answer21)
Who discovered "ribosomes'' in animal cells [CPMT 1990; BHU 2001]
A)
Watson done
clear
B)
Talvim done
clear
C)
Cowdry done
clear
D)
Palade done
clear
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question_answer22)
Ribosomes, similar to those of bacteria, are found in [CBSE PMT 2001]
A)
Plant nuclei done
clear
B)
Pancreatic mitochondria done
clear
C)
Liver endoplasmic reticulum done
clear
D)
Cardiac muscle cytoplasm done
clear
View Solution play_arrow
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question_answer23)
Which of the following statements is wrong for ribosomes [RPMT 1999]
A)
Formed by two-sub units done
clear
B)
Formed by ribo-protein done
clear
C)
Formed in chain done
clear
D)
Both sub-units are bounded by a membrane done
clear
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question_answer24)
The larger sub-unit in 80 S ribosome is [MP PMT 1999]
A)
50 S done
clear
B)
60 S done
clear
C)
40 S done
clear
D)
0 S done
clear
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question_answer25)
Which type of ribosomes are found in Nostoc cells [MP PMT 1999]
A)
50 S done
clear
B)
60 S done
clear
C)
70 S done
clear
D)
Eukaryotic done
clear
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question_answer26)
The 80S ribosomes are present in [MP PMT 1996; CPMT 1998]
A)
Eucaryotic cells done
clear
B)
Procaryotic cells done
clear
C)
Bacterial cells done
clear
D)
Cyanobacterial cells done
clear
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question_answer27)
'Palade granules' are
A)
Ribosomes done
clear
B)
Microbodies done
clear
C)
Sulphur granules done
clear
D)
Lipid granules done
clear
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question_answer28)
Which of the following cell organelle lacks DNA and bounding membrane [AFMC 2002]
A)
Ribosome done
clear
B)
Plastid done
clear
C)
Nucleolus done
clear
D)
Plasmid done
clear
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question_answer29)
Which of the following organelle is called as "protein factory of the cell''
A)
Lysosome done
clear
B)
Mitochondria done
clear
C)
Golgi body done
clear
D)
Ribosome done
clear
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question_answer30)
Which of the following affects the association and dissociation of sub-units of ribosomes [RPMT 2001]
A)
Mg done
clear
B)
Ca done
clear
C)
Fe done
clear
D)
K done
clear
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question_answer31)
Non-membranous cell organelles are [MP PMT 1997; BVP 2004]
A)
Mitochondria done
clear
B)
Endoplasmic reticulum done
clear
C)
Ribosomes done
clear
D)
Ribosomes and centrioles done
clear
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question_answer32)
Ribosomes are found in [MP PMT 2005]
A)
Cytoplasm done
clear
B)
Nucleus done
clear
C)
Cell wall done
clear
D)
Golgibody done
clear
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question_answer33)
If all the ribosomes of a cell are destroyed [DPMT 1987]
A)
Respiration will not take place done
clear
B)
Photosynthesis will not occur done
clear
C)
Fat will not be stored done
clear
D)
Protein will not be formed done
clear
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question_answer34)
In prokaryotic ribosome RNA - protein ratio is
A)
2 : 1 done
clear
B)
1 : 1 done
clear
C)
3 : 1 done
clear
D)
None of these done
clear
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question_answer35)
Which of the following organelles is present in bacterial cell
A)
Mitochondria done
clear
B)
Ribosomes done
clear
C)
Golgi complex done
clear
D)
Endoplasmic reticulum done
clear
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question_answer36)
70S type of ribosome shows two units whose sedimentation constants are [Orissa PMT 2002]
A)
40 S and 30 S done
clear
B)
50 S and 20 S done
clear
C)
50 S and 30 S done
clear
D)
60 S and 20 S done
clear
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question_answer37)
Which of the following structures carries out a similar function in both plant and animal cell
A)
Chloroplasts done
clear
B)
Ribosomes done
clear
C)
Cell wall done
clear
D)
Contractile vacuoles done
clear
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question_answer38)
Eukaryotic 80 S ribosome breaks into [CPMT 1985; MP PMT 2000, 03]
A)
40 S and 40 S done
clear
B)
60 S and 40 S done
clear
C)
60 S and 50 S done
clear
D)
50 S and 30 S done
clear
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question_answer39)
Which of the following pairs is correct [CBSE PMT 1993]
A)
Svedberg unit ? Biomembranes done
clear
B)
Polyribosomes ? RNA done
clear
C)
Dictyosomes ? Suicidal sacs done
clear
D)
Cisternae ? Mitochondria done
clear
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question_answer40)
Ribosomes are attached to E.R. through [CPMT 1985]
A)
Riboplasm done
clear
B)
rRNA done
clear
C)
tRNA done
clear
D)
Hydrophobic interaction done
clear
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question_answer41)
What is the normal diameter of ribosomes
A)
\[\text{75}\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
B)
\[\text{100}\,\,\text{to}\,\,\text{200}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
C)
\[\text{200}\,\,\text{to}\,\,\text{300}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
D)
\[\text{500}\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] done
clear
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question_answer42)
Polyribosomes are aggregation of [DPMT 1984; BHU 1985, 88]
A)
Ribosomes and rRNA done
clear
B)
Only rRNA done
clear
C)
Peroxisomes done
clear
D)
Several ribosomes held together by a stearing of mRNA done
clear
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question_answer43)
Ribosomes are made up of [BHU 1987; CPMT 1984; MP PMT 1995, 98; BVP 2002; CPMT 2004]
A)
DNA and protein done
clear
B)
DNA alone done
clear
C)
RNA and protein done
clear
D)
RNA and DNA done
clear
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question_answer44)
Below a certain level of\[M{{g}^{++}}\]the two sub units of the ribosome
A)
Separates done
clear
B)
Fuses done
clear
C)
Divides done
clear
D)
None of these done
clear
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question_answer45)
Ribosomes of bacteria, mitochondria, prokaryotes and chloroplast are of [BHU 1985; DPMT 1984; MHCET 2001]
A)
50 S type done
clear
B)
80 S type done
clear
C)
70 S type done
clear
D)
30 S type done
clear
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question_answer46)
The functional unit in the synthesis of protein is [MP PMT 1994; CBSE PMT 1999]
A)
Peroxisome done
clear
B)
Dictyosome done
clear
C)
Lysosome done
clear
D)
Polysome done
clear
View Solution play_arrow
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question_answer47)
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 done
clear
B)
Ribosomes done
clear
C)
Pyrenoids done
clear
D)
Mitochondria done
clear
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question_answer48)
The bacterial ribosomes are of [MP PMT 1994; J&K CET 2002; Kerala PMT 2004]
A)
50 S type done
clear
B)
70 S type done
clear
C)
30 S type done
clear
D)
80 S type done
clear
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question_answer49)
All are membrane bound cell organelles except [AIIMS 1984; RPMT 1999; DPMT 2003] or Which of the following cell organelles lacks a unit membrane [MP PMT 1995, 98; RPMT 2002; J & K CET 2005]
A)
Mitochondria done
clear
B)
Lysosomes done
clear
C)
Sphaerosomes done
clear
D)
Ribosomes done
clear
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question_answer50)
Ribosomes that occur exclusively in mitochondria is [DPMT 2004]
A)
70S done
clear
B)
55S done
clear
C)
30S done
clear
D)
50S done
clear
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question_answer51)
Ribosome mainly has [DPMT 2004]
A)
DNA done
clear
B)
RNA done
clear
C)
Carbohydrate done
clear
D)
None of these done
clear
View Solution play_arrow