During Grams' staining which is incorrect?

(1) All bacteria take crystal violet stain

(2) Gram +ve bacteria take crystal violet stain

(3) Only Gram –ve bacteria take crystal violet stain

(4) Gram –ve bacteria lose this stain after alcohol

 

 

Subtopic:  Bacterial Staining & Shape |
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Hammerling's experiments on Acetabularia involved exchanging

(1) Cytoplasm

(2) Nucleus

(3) Rhizoid and stalk

(4) Gametes 

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A non-membrane bound organelle found exclusively in animal cells is:

1. Sphaerosome

2. Glyoxisome

3. Peroxisome

4. Centriole

Subtopic:  Centrosomes |
 77%
From NCERT
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Which of the following is the largest constituent of the membrane of the erythrocyte in human beings and is also responsible for performing most of the functions of the membrane?

1. Protein

2. Lipid

3. Glycolipid

4. Glycoprotein

Subtopic:  Cell Membrane |
 61%
From NCERT
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Cell is the fundamental structural and functional unit of all living organisms because:

1. Anything less than a complete structure of a cell does not ensure independent living.
2. The metabolic reactions can only occur inside a living cell.
3. Nucleic acids present in the cells ensure living state.
4. The membrane bound organelles cause differentiation for proper functioning.

Subtopic:  Introduction to Cell |
 77%
From NCERT
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Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells ?

1. Mathias Schleiden 2. Theodore Schwann
3. Rudolph Virchow 4. Robert Hooke
Subtopic:  Cell Wall |
 61%
From NCERT
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Prokaryotic mesosomes do not help in:

1. Cell wall formation

2. DNA replication

3. Respiration

4. Photosynthesis

Subtopic:  Details of Prokaryotic Cell Structure |
 75%
From NCERT
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The endomembrane system of a eukaryotic cell does not include:

1. Endoplasmic reticulum

2. Lysosome

3. Vacuole

4. Peroxisome

Subtopic:  Endomembrane System (Endoplasmic Reticulum) |
 87%
From NCERT
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The cis and trans faces of the Golgi Apparatus are:

1. Similar but not interconnected

2. Similar and interconnected

3. Entirely different but interconnected

4. Entirely different and not interconnected

Subtopic:  Golgi Apparatus |
 76%
From NCERT
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Plastids used in storing proteins are called as:

1. Amyloplasts

2. Aleuroplasts

3. Elaioplasts

4. Chromoplasts

Subtopic:  Plastids |
 77%
From NCERT
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