Which of the following is true about Rudolf Virchow?

(1)He modified the hypothesis of the Schleiden and Schwann

(2)He explained how new cells are formed

(3)He explained what Schleiden and Schwann couldn’t explain in cell theory

(4)All of the above

Subtopic:  Cell Theory |
 95%
From NCERT
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Which one is true statement

(1)cell membrane is the delimiting structure of the cell

(2)cytoplasm is the main arena of cellular activities

(3)All cells have nucleus

(4)Both A and B

Subtopic:  Cell Membrane |
 83%
From NCERT
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How many of the following cell organelles are membranous?

Endoplasmic reticulum, Nucleus, lysosomes, vacuoles, ribosomes, centrioles

(1)6

(2)5

(3)4

(4)2

Subtopic:  Eukaryotic Cell Orgenelle |
 71%
From NCERT
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How many of the following cell organelles are not present in prokaryotic cell?

Endoplasmic reticulum, Nucleus, lysosomes, vacuoles, ribosomes, centrioles

 

(1)6

(2)5

(3)4

(4)2

Subtopic:  Details of Prokaryotic Cell Structure |
 51%
From NCERT
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In which of the following cell organelles ribosomes are present?

(1)cytoplasm

(2)Mitochondria and chloroplast

(3)Nucleus, Mitochondria and chloroplast

(4) cytoplasm, Mitochondria and chloroplast

Subtopic:  Eukaryotic Cell Orgenelle |
From NCERT
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Which of the following is a membraneless organelle

(1)Ribosome

(2)Nucleolus

(3)Basal Body

(4)All of these

Subtopic:  Eukaryotic Cell Orgenelle |
 74%
From NCERT
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Which one is incorrect

(1)Mycoplasmas are greater than bacteria

(2)largest isolated cell is ostrich egg

(3)Nerve cells are longest cells

(4)The shape of the cell may vary with  the function they perform

Subtopic:  Cell Organisation |
 94%
From NCERT
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Nerve cell is

(1)largest and branched

(2)longest and branched

(3)longest and unbranched

(4)largest and unbranched

Subtopic:  Cell Organisation |
 85%
From NCERT
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Which of the following represents the prokaryotic cell

1. bacteria, blue-green algae, mycoplasma, PPLO

2. bacteria, blue-green algae, microbes, chlorella

3. bacteria, blue-green algae, slime moulds and Diatoms

4. bacteria, blue-green algae only

Subtopic:  Prokaryotic Cell Organisation |
 95%
From NCERT
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Which of the following is incorrect match

(1)bacillus- rod like

(2)coccus-comma shaped

(3)vibrio-comma shaped

(4)spirillum-spiral

Subtopic:  Prokaryotic Cell Organisation |
 90%
From NCERT
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