Gas vacuoles allow cyanobacteria to:

1. Store carbon dioxide for assimilation

2. Control their buoyancy

3. Provide anaerobic conditions to nitrogenase

4. Eliminate toxic ammonia

Subtopic:  Ribosome and Inclusion Bodies |
 61%
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The lipid component of the plasma membrane mainly consists of:

1. Triglycerides

2. Cholesterol

3. Phosphoglycerides

4 Proteins

Subtopic:  Cell Membrane |
 73%
From NCERT
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Carotenoid pigments are found in:

I. Chloroplasts

II. Chromoplasts

III. Leucoplasts

(1) Only I

(2) Only I and II

(3) Only II

(4) I, II and III

Subtopic:  Plastids |
 59%
From NCERT
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Microbodies, which help to convert stored lipids into carbohydrates so they can be used for plant growth, are known as:

1. Peroxisomes

2. Sphaerosomes

3. Glyoxysomes

4. Lysosomes

 

Subtopic:  Microbodies |
 53%
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Ribosomes are produced in

1. Nucleolus

2. Mitochondria

3. Cytoplasm

4. Golgibody

Subtopic:  Nucleus |
 65%
From NCERT
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All the following are the part of a eukaryotic cell endomembranous system except:

1. Vacuole

2. Lysosome

3. Golgi complex

4. Mitochondria

Subtopic:  Endomembrane System (Endoplasmic Reticulum) |
 80%
From NCERT
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A feature unique to prokaryotes would be:

1. A cell wall not made up of cellulose

2. An extrachromosomal plasmid DNA

3. A cell membrane of peptidoglycan

4. Presence of inclusions

Subtopic:  Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
 58%
From NCERT
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Chromatophores are:

1. present in liopolysaccharide layer of gram negative bacteria

2. colored pigments present in fluorescent bacteria

3. vesicles that store pigments in prokaryotic cells

4. extensions on membrane in cynobacteria 

Subtopic:  Details of Prokaryotic Cell Structure |
 55%
From NCERT
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The tail of the phospholipid molecule:

1. is hydrophilic and composed of phosphate
2. is hydrophilic and composed of saturated hydrocarbons
3. is hydrophobic and composed of saturated hydrocarbons
4. is hydrophobic and composed of unsaturated hydrocarbons
Subtopic:  Cell Membrane |
 58%
From NCERT
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In animal cells, lipid-like steroidal hormones are synthesized in the:

1. Nucleus

2. Rough endoplasmic reticulum

3. Smooth endoplasmic reticulum

4. Golgi apparatus

Subtopic:  Intro to Endomembrane System: Endoplasmic Reticulum |
 84%
From NCERT
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