The membrane of vacuole is called

1. plasma membrane

2. tonoplast

3. cytoplasm

4. tunicates

Subtopic:  Vacuole |
 96%
From NCERT
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Which of  the following is true about mitochondria except

1. Semi-autonomous organelle

2. Compartmentalisation is present

3. Matrix contain 80s ribosomes

4. Both 1 and 2

Subtopic:  Mitochondria |
 66%
From NCERT
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Which of the following is  present in matrix of mitochondria

1. ribosomes

2. RNA

3. DNA

4. All of the above

Subtopic:  Mitochondria |
 91%
From NCERT
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Which of the following is true about mitochondria except

(1) easily visualised under microscope without staining

(2) It’s number in the cell depends on the physiological activity of the cell

(3)It is highly variable in their shape and size

(4)Double membranous structure

Subtopic:  Mitochondria |
 82%
From NCERT
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Chromatin can be stained with

1. Basic dyes

2. neutral dyes

3. acidic dyes

4. Crystal violet

Subtopic:  Nucleus: Chromosomes |
 81%
From NCERT
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Which of the following is true about chromosome

1. nucleoprotein

2. 23 pairs in single human diploid cell

3. Contains primary constriction

4. All of these

Subtopic:  Nucleus: Chromosomes |
 94%
From NCERT
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On what basis chromosomes have been divided into four classes.

1. position of centromere

2. position of primary constriction

3. number of kinetochores

4. Both A and B

Subtopic:  Nucleus: Chromosomes |
 64%
From NCERT
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In human beings, the membrane of erythrocyte has

(1) Approximately 40% proteins and 52% lipids

(2) Cephalin on the outer side and lecithin on the inner side

(3) Approximately 52% proteins and 40% lipids

(4) Lecithin on the outer side and cephalin on the inner side

Subtopic:  Evidence for Fluidic Nature of Membrane |
 91%
From NCERT
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Find out the incorrect statement

1. Middle lamella is mainly made up of Ca-pectate
2. Cell wall is formed from inner side therefore secondary wall formed before primary wall
3. Middle lamella glues the different neighbouring cells together
4. Pits are present in secondary wall
Subtopic:  Cell Wall |
 81%
From NCERT
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The contractile vacuole

1. is present in Amoeba 2. helps in osmoregulation
3. helps in excretion 4. All of the above
Subtopic:  Vacuole |
 89%
From NCERT
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