Cells in the human body that secrete products like lipids and steroids are likely to have an abundance of:
1. Smooth endoplasmic reticulum
2. Rough endoplasmic reticulum
3. Lysosomes
4. Mitochondria
Subtopic: Â Intro to Endomembrane System: Endoplasmic Reticulum |Â Endomembrane System (Endoplasmic Reticulum) |
 92%
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What type of chromosomes will not have a short and a long arm?
1. Acrocentric
2. Metacentric
3. Sub-metacentric
4. Both 1 and 2
1. Acrocentric
2. Metacentric
3. Sub-metacentric
4. Both 1 and 2
Subtopic: Â Nucleus: Chromosomes |
 75%
From NCERT
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Fimbriae in bacterial cells:
| 1. | play an important role in motility |
| 2. | attach the cell to the rocks in a stream and also to the host tissues |
| 3. | provide surface area for the location of enzymes |
| 4. | form a tube like structure for passage of DNA during bacterial conjugation |
Subtopic: Â Prokaryotic Cell Organisation |Â Details of Prokaryotic Cell Structure |
 86%
From NCERT
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Like mitochondria, the chloroplasts:
1. are found only in plant cells
2. do not have 70 S ribosomes
3. are also double membrane bound
4. are unable to carry out phosphorylation of ADP
1. are found only in plant cells
2. do not have 70 S ribosomes
3. are also double membrane bound
4. are unable to carry out phosphorylation of ADP
Subtopic: Â Plastids |
 87%
From NCERT
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Regarding cell membrane:
| I: | The lipid content mainly is phosphoglycerides |
| II: | Proteins can move laterally within the overall bilayer |
| III: | The membrane is selectively permeable |
| 1. | Only I and II are correct |
| 2. | Only I and III are correct |
| 3. | Only II and III are correct |
| 4. | I, II and III are correct |
Subtopic: Â Cell Membrane |
 72%
From NCERT
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Often described as infoldings of bacterial cell membrane, which of the following structures help in cell wall formation and DNA replication?
1. Inclusion bodies
2. Chromatophores
3. Fimbriae
4. Mesosomes
1. Inclusion bodies
2. Chromatophores
3. Fimbriae
4. Mesosomes
Subtopic: Â Prokaryotic Cell Organisation |Â Details of Prokaryotic Cell Structure |
 88%
From NCERT
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Which component of the endomembrane system of a eukaryotic cell is frequently observed in cells involved in protein synthesis and secretion?
1. Rough endoplasmic reticulum
2. Golgi complex
3. Smooth endoplasmic reticulum
4. Chloroplasts
1. Rough endoplasmic reticulum
2. Golgi complex
3. Smooth endoplasmic reticulum
4. Chloroplasts
Subtopic: Â Endomembrane System (Endoplasmic Reticulum) |
 88%
From NCERT
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A characteristic 9 + 2 arrangement of axonemal microtubules is seen in:
1. Cilia and flagella
2. Centriole
3. Filaments in axons of neurons
4. Actin myofilaments
1. Cilia and flagella
2. Centriole
3. Filaments in axons of neurons
4. Actin myofilaments
Subtopic: Â Cytoskeleton |
 86%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Lysosomes | Carry acid hydrolases |
| 2. | Ribosomes | Double membrane bound cell organelles |
| 3. | Golgi apparatus | Important site of formation of glycoproteins and glycolipids |
| 4. | Amyloplasts | Plastids that store carbohydrates |
Subtopic: Â Plastids |Â Golgi Apparatus |Â Lysosomes |Â Ribosome and Inclusion Bodies |Â Endomembrane System (Lysosomes) |
 89%
From NCERT
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The middle lamella in plant cells:
1. is mainly made up of silica
2. holds or glues the different neighbouring cells together
3. is never traversed by plasmodesmata
4. is primarily composed of proteins
1. is mainly made up of silica
2. holds or glues the different neighbouring cells together
3. is never traversed by plasmodesmata
4. is primarily composed of proteins
Subtopic: Â Cell Wall |
 91%
From NCERT
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