1 genes contained in diploid number of chromosomes
2 total number of genes present in the chromosome
3 total number of genes on sex chromosome
4 genes contained in the plasmid
Explanation:
B While most prokaryotes like E. coli contain a single circular DNA molecule that makes up their entire genome recent studies have indicated that some prokaryotes contain as many as four linear or circular chromosome. For ex - Vibrio chlerae the bacteria that cause cholera, contains two circular chromosomes.
MHT CET-01.10.2020 Shift-I
Cell : Structure and Functions
168803
During mitosis, nuclear membrane disappears at
1 telophase
2 late prophase
3 late metaphase
4 anaphase
Explanation:
B In late prophase, the nuclear envelope starts to fragment, and by the time of prometaphase, it completely dissolves, allowing the mitotic spindle to interact with the chromosomes. This breakdown of the nuclear membrane is essential for the proper segregation of genetic material during mitosis.
Tripura JEE-2017
Cell : Structure and Functions
168804
The type of ribosome found in prokaryotic cell is
1 \(60 \mathrm{~S}\)
2 \(70 \mathrm{~S}\)
3 \(80 \mathrm{~S}\)
4 \(100 \mathrm{~S}\)
Explanation:
B Ribosome observed in plant cell. by 'Robinson and Brown.' But palade : observed in Ribosomes animal cell the ribosomes occurs in both prokariyotic and eukaryotic cell except mature R.B.C also occur in the nucleus, nucleolus, chloroplast; mitochondria. i.e organelle within the organelles. 2 types ribosome 70S ribosome's ( larger sub unit \(50 \mathrm{~S}+\) smaller unit \(30 \mathrm{~S}\) ). These ribosome's are found in prokaryotes. 80S ribosome (larger subunit \(60 \mathrm{~S}+\) Smaller subunit \(40 \mathrm{~S}\) ). These ribosome's are found in Eukaryotic cells.
Tripura JEE-2017 Karnataka CET- 2011
Cell : Structure and Functions
168805
Identify the bacterium that appears violet after Gram staining
1 Salmonella enterica
2 Escherichia coli
3 Mycobacterium tuberculosis
4 Rhizobium meliloti
Explanation:
C Gram staining technique is based on the ability of bacteria to retain the crystal violet stain in their cell wall. Gram staining includes staining of both gram positive and gram-negative bacteria cell purple with crystal violet followed by stabilization of dye in peptidoglyacan layer with mordant gram's iodine and application of alcohol to dissolve outer membrane and dye from peptidoglyacan layer. Presence of thick petptidoglycan layer in gram positive cells make them retain the dye after alcohol treatment while gramnegative bacteria become colourless.
1 genes contained in diploid number of chromosomes
2 total number of genes present in the chromosome
3 total number of genes on sex chromosome
4 genes contained in the plasmid
Explanation:
B While most prokaryotes like E. coli contain a single circular DNA molecule that makes up their entire genome recent studies have indicated that some prokaryotes contain as many as four linear or circular chromosome. For ex - Vibrio chlerae the bacteria that cause cholera, contains two circular chromosomes.
MHT CET-01.10.2020 Shift-I
Cell : Structure and Functions
168803
During mitosis, nuclear membrane disappears at
1 telophase
2 late prophase
3 late metaphase
4 anaphase
Explanation:
B In late prophase, the nuclear envelope starts to fragment, and by the time of prometaphase, it completely dissolves, allowing the mitotic spindle to interact with the chromosomes. This breakdown of the nuclear membrane is essential for the proper segregation of genetic material during mitosis.
Tripura JEE-2017
Cell : Structure and Functions
168804
The type of ribosome found in prokaryotic cell is
1 \(60 \mathrm{~S}\)
2 \(70 \mathrm{~S}\)
3 \(80 \mathrm{~S}\)
4 \(100 \mathrm{~S}\)
Explanation:
B Ribosome observed in plant cell. by 'Robinson and Brown.' But palade : observed in Ribosomes animal cell the ribosomes occurs in both prokariyotic and eukaryotic cell except mature R.B.C also occur in the nucleus, nucleolus, chloroplast; mitochondria. i.e organelle within the organelles. 2 types ribosome 70S ribosome's ( larger sub unit \(50 \mathrm{~S}+\) smaller unit \(30 \mathrm{~S}\) ). These ribosome's are found in prokaryotes. 80S ribosome (larger subunit \(60 \mathrm{~S}+\) Smaller subunit \(40 \mathrm{~S}\) ). These ribosome's are found in Eukaryotic cells.
Tripura JEE-2017 Karnataka CET- 2011
Cell : Structure and Functions
168805
Identify the bacterium that appears violet after Gram staining
1 Salmonella enterica
2 Escherichia coli
3 Mycobacterium tuberculosis
4 Rhizobium meliloti
Explanation:
C Gram staining technique is based on the ability of bacteria to retain the crystal violet stain in their cell wall. Gram staining includes staining of both gram positive and gram-negative bacteria cell purple with crystal violet followed by stabilization of dye in peptidoglyacan layer with mordant gram's iodine and application of alcohol to dissolve outer membrane and dye from peptidoglyacan layer. Presence of thick petptidoglycan layer in gram positive cells make them retain the dye after alcohol treatment while gramnegative bacteria become colourless.
1 genes contained in diploid number of chromosomes
2 total number of genes present in the chromosome
3 total number of genes on sex chromosome
4 genes contained in the plasmid
Explanation:
B While most prokaryotes like E. coli contain a single circular DNA molecule that makes up their entire genome recent studies have indicated that some prokaryotes contain as many as four linear or circular chromosome. For ex - Vibrio chlerae the bacteria that cause cholera, contains two circular chromosomes.
MHT CET-01.10.2020 Shift-I
Cell : Structure and Functions
168803
During mitosis, nuclear membrane disappears at
1 telophase
2 late prophase
3 late metaphase
4 anaphase
Explanation:
B In late prophase, the nuclear envelope starts to fragment, and by the time of prometaphase, it completely dissolves, allowing the mitotic spindle to interact with the chromosomes. This breakdown of the nuclear membrane is essential for the proper segregation of genetic material during mitosis.
Tripura JEE-2017
Cell : Structure and Functions
168804
The type of ribosome found in prokaryotic cell is
1 \(60 \mathrm{~S}\)
2 \(70 \mathrm{~S}\)
3 \(80 \mathrm{~S}\)
4 \(100 \mathrm{~S}\)
Explanation:
B Ribosome observed in plant cell. by 'Robinson and Brown.' But palade : observed in Ribosomes animal cell the ribosomes occurs in both prokariyotic and eukaryotic cell except mature R.B.C also occur in the nucleus, nucleolus, chloroplast; mitochondria. i.e organelle within the organelles. 2 types ribosome 70S ribosome's ( larger sub unit \(50 \mathrm{~S}+\) smaller unit \(30 \mathrm{~S}\) ). These ribosome's are found in prokaryotes. 80S ribosome (larger subunit \(60 \mathrm{~S}+\) Smaller subunit \(40 \mathrm{~S}\) ). These ribosome's are found in Eukaryotic cells.
Tripura JEE-2017 Karnataka CET- 2011
Cell : Structure and Functions
168805
Identify the bacterium that appears violet after Gram staining
1 Salmonella enterica
2 Escherichia coli
3 Mycobacterium tuberculosis
4 Rhizobium meliloti
Explanation:
C Gram staining technique is based on the ability of bacteria to retain the crystal violet stain in their cell wall. Gram staining includes staining of both gram positive and gram-negative bacteria cell purple with crystal violet followed by stabilization of dye in peptidoglyacan layer with mordant gram's iodine and application of alcohol to dissolve outer membrane and dye from peptidoglyacan layer. Presence of thick petptidoglycan layer in gram positive cells make them retain the dye after alcohol treatment while gramnegative bacteria become colourless.
1 genes contained in diploid number of chromosomes
2 total number of genes present in the chromosome
3 total number of genes on sex chromosome
4 genes contained in the plasmid
Explanation:
B While most prokaryotes like E. coli contain a single circular DNA molecule that makes up their entire genome recent studies have indicated that some prokaryotes contain as many as four linear or circular chromosome. For ex - Vibrio chlerae the bacteria that cause cholera, contains two circular chromosomes.
MHT CET-01.10.2020 Shift-I
Cell : Structure and Functions
168803
During mitosis, nuclear membrane disappears at
1 telophase
2 late prophase
3 late metaphase
4 anaphase
Explanation:
B In late prophase, the nuclear envelope starts to fragment, and by the time of prometaphase, it completely dissolves, allowing the mitotic spindle to interact with the chromosomes. This breakdown of the nuclear membrane is essential for the proper segregation of genetic material during mitosis.
Tripura JEE-2017
Cell : Structure and Functions
168804
The type of ribosome found in prokaryotic cell is
1 \(60 \mathrm{~S}\)
2 \(70 \mathrm{~S}\)
3 \(80 \mathrm{~S}\)
4 \(100 \mathrm{~S}\)
Explanation:
B Ribosome observed in plant cell. by 'Robinson and Brown.' But palade : observed in Ribosomes animal cell the ribosomes occurs in both prokariyotic and eukaryotic cell except mature R.B.C also occur in the nucleus, nucleolus, chloroplast; mitochondria. i.e organelle within the organelles. 2 types ribosome 70S ribosome's ( larger sub unit \(50 \mathrm{~S}+\) smaller unit \(30 \mathrm{~S}\) ). These ribosome's are found in prokaryotes. 80S ribosome (larger subunit \(60 \mathrm{~S}+\) Smaller subunit \(40 \mathrm{~S}\) ). These ribosome's are found in Eukaryotic cells.
Tripura JEE-2017 Karnataka CET- 2011
Cell : Structure and Functions
168805
Identify the bacterium that appears violet after Gram staining
1 Salmonella enterica
2 Escherichia coli
3 Mycobacterium tuberculosis
4 Rhizobium meliloti
Explanation:
C Gram staining technique is based on the ability of bacteria to retain the crystal violet stain in their cell wall. Gram staining includes staining of both gram positive and gram-negative bacteria cell purple with crystal violet followed by stabilization of dye in peptidoglyacan layer with mordant gram's iodine and application of alcohol to dissolve outer membrane and dye from peptidoglyacan layer. Presence of thick petptidoglycan layer in gram positive cells make them retain the dye after alcohol treatment while gramnegative bacteria become colourless.
