169032
Which of the following cell organelle remains enveloped by a single unit membrane ?
1 Mitochondria
2 Lysosomes
3 Nucleus
4 Chloroplast
Explanation:
B Lysosomes are single membrane bounded structure or cell organelles. Mitochondria, chloroplast and nucleus are double membranous structures.
HP CET-2011
Cell : Structure and Functions
168981
The main components of plasma membrane are
1 lipids and proteins
2 lipids, proteins and carbohydrates
3 lipids only
4 proteins only
Explanation:
B The main components of plasma membrane are lipid, proteins and carbohydrates. It is the outer covering of animal cell but in plant cell it is situated below the cell wall.
BVP-2008 / Uttarakhand PMT-2007
Cell : Structure and Functions
168982
In gram positive bacteria cell wall is made up of
1 cellulose
2 protein
3 murein
4 lipid
Explanation:
C In gram positive bacteria cell wall is made up of Peptidoglycan (NAM - N - Acetyl muramic acid) also known as mucopeptide or murein. Its thickness is about 20 to \(80 \mathrm{~nm}\).
HP CET-2013 / Rajasthan PMT-2003
Cell : Structure and Functions
168983
The thickness of unit membrane is
1 \(20 \AA\)
2 \(35 \AA\)
3 \(55 \AA\)
4 \(75 \AA\)
Explanation:
D According to Robertson's concept of unit membrane, plasma membrane has a trilaminar structure in which transparent lipid bilayer is surrounded on either side by dense proteins. It has a thickness of about \(75 \AA\) A with a central lipid layer of \(35 \AA\) in thickness and two peripheral layers of \(20 \AA\) A each.
169032
Which of the following cell organelle remains enveloped by a single unit membrane ?
1 Mitochondria
2 Lysosomes
3 Nucleus
4 Chloroplast
Explanation:
B Lysosomes are single membrane bounded structure or cell organelles. Mitochondria, chloroplast and nucleus are double membranous structures.
HP CET-2011
Cell : Structure and Functions
168981
The main components of plasma membrane are
1 lipids and proteins
2 lipids, proteins and carbohydrates
3 lipids only
4 proteins only
Explanation:
B The main components of plasma membrane are lipid, proteins and carbohydrates. It is the outer covering of animal cell but in plant cell it is situated below the cell wall.
BVP-2008 / Uttarakhand PMT-2007
Cell : Structure and Functions
168982
In gram positive bacteria cell wall is made up of
1 cellulose
2 protein
3 murein
4 lipid
Explanation:
C In gram positive bacteria cell wall is made up of Peptidoglycan (NAM - N - Acetyl muramic acid) also known as mucopeptide or murein. Its thickness is about 20 to \(80 \mathrm{~nm}\).
HP CET-2013 / Rajasthan PMT-2003
Cell : Structure and Functions
168983
The thickness of unit membrane is
1 \(20 \AA\)
2 \(35 \AA\)
3 \(55 \AA\)
4 \(75 \AA\)
Explanation:
D According to Robertson's concept of unit membrane, plasma membrane has a trilaminar structure in which transparent lipid bilayer is surrounded on either side by dense proteins. It has a thickness of about \(75 \AA\) A with a central lipid layer of \(35 \AA\) in thickness and two peripheral layers of \(20 \AA\) A each.
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Cell : Structure and Functions
169032
Which of the following cell organelle remains enveloped by a single unit membrane ?
1 Mitochondria
2 Lysosomes
3 Nucleus
4 Chloroplast
Explanation:
B Lysosomes are single membrane bounded structure or cell organelles. Mitochondria, chloroplast and nucleus are double membranous structures.
HP CET-2011
Cell : Structure and Functions
168981
The main components of plasma membrane are
1 lipids and proteins
2 lipids, proteins and carbohydrates
3 lipids only
4 proteins only
Explanation:
B The main components of plasma membrane are lipid, proteins and carbohydrates. It is the outer covering of animal cell but in plant cell it is situated below the cell wall.
BVP-2008 / Uttarakhand PMT-2007
Cell : Structure and Functions
168982
In gram positive bacteria cell wall is made up of
1 cellulose
2 protein
3 murein
4 lipid
Explanation:
C In gram positive bacteria cell wall is made up of Peptidoglycan (NAM - N - Acetyl muramic acid) also known as mucopeptide or murein. Its thickness is about 20 to \(80 \mathrm{~nm}\).
HP CET-2013 / Rajasthan PMT-2003
Cell : Structure and Functions
168983
The thickness of unit membrane is
1 \(20 \AA\)
2 \(35 \AA\)
3 \(55 \AA\)
4 \(75 \AA\)
Explanation:
D According to Robertson's concept of unit membrane, plasma membrane has a trilaminar structure in which transparent lipid bilayer is surrounded on either side by dense proteins. It has a thickness of about \(75 \AA\) A with a central lipid layer of \(35 \AA\) in thickness and two peripheral layers of \(20 \AA\) A each.
169032
Which of the following cell organelle remains enveloped by a single unit membrane ?
1 Mitochondria
2 Lysosomes
3 Nucleus
4 Chloroplast
Explanation:
B Lysosomes are single membrane bounded structure or cell organelles. Mitochondria, chloroplast and nucleus are double membranous structures.
HP CET-2011
Cell : Structure and Functions
168981
The main components of plasma membrane are
1 lipids and proteins
2 lipids, proteins and carbohydrates
3 lipids only
4 proteins only
Explanation:
B The main components of plasma membrane are lipid, proteins and carbohydrates. It is the outer covering of animal cell but in plant cell it is situated below the cell wall.
BVP-2008 / Uttarakhand PMT-2007
Cell : Structure and Functions
168982
In gram positive bacteria cell wall is made up of
1 cellulose
2 protein
3 murein
4 lipid
Explanation:
C In gram positive bacteria cell wall is made up of Peptidoglycan (NAM - N - Acetyl muramic acid) also known as mucopeptide or murein. Its thickness is about 20 to \(80 \mathrm{~nm}\).
HP CET-2013 / Rajasthan PMT-2003
Cell : Structure and Functions
168983
The thickness of unit membrane is
1 \(20 \AA\)
2 \(35 \AA\)
3 \(55 \AA\)
4 \(75 \AA\)
Explanation:
D According to Robertson's concept of unit membrane, plasma membrane has a trilaminar structure in which transparent lipid bilayer is surrounded on either side by dense proteins. It has a thickness of about \(75 \AA\) A with a central lipid layer of \(35 \AA\) in thickness and two peripheral layers of \(20 \AA\) A each.