CBSE Questions for Class 11 Medical Biology Cell The Unit Of Life Quiz 5 - MCQExams.com

Polymorphic cell organelle is 
  • Peroxisome
  • Mycoplasma
  • Lysosome
  • Golgi bodies
Synthesis of cell wall material take place in 
  • Dictyosome
  • Mitochondria
  • Lysosome
  • E.R.
Pick the correct matching set. There could be multiple matches
(A) Nucleus(i) Synthesis and protein packaging
(B) Nucleolus(ii) Nuclear pores 
(C) Smooth endoplasmic reticulum(iii) Seat of ribosomes formation
(D)  Rough Endoplasmic reticulum(iv) Endomembrane system with Golgi and nucleus
(v) Fat storage
(vi) Director of the cell
(vii) Detoxification of drugs
(viii) Storage house of RNA
(ix) storage of calcium
(x) Studded ribosomes
(xi) Karyotheca
(xii) Without defined membrane

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  • A- i, iv, x; B- iii, viii, xii; C- v, vii, ix; D- ii, vi, xi
  • A- ii, iv, xi; B- iii, viii, xii; C- v, vii, ix; D- i, iv, x
  • A- i, iv, x; B- ii, iv, xi; C- v, vii, ix; D- iii, viii, xii
  • A- v, vii, ix; B- iii, viii, xii; C- ii, vi, xi; D- i, iv, x
Lysosomes are called as suicidal bags because
  • They possess enzymes, which can digest cell debris
  • They suicide
  • They do nothing in a plant cell
  • None of these
Which of the following is the most abundant lipid in cell membrane?
  • Chitin
  • Cholesterol
  • Steroid
  • Phospholipid
Identify the correct statement from the following.
(A) The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes, ribosome and vacuoles
(B) ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen
(C) Ribosomes are involved in protein synthesis
(D) Mitochondria help in oxidative phosphorylation and generation of ATP
  • (B), (C) and (D) 
  • (A) 
  • (B) 
  • (C)
  • (D) 
The fluid nature of the membrane indicates 
  • Cell growth
  • Cell division
  • Endocytosis
  • All of the above
Cell membrane is composed of which of the following components?
  • Proteins and cellulose
  • Proteins and phospholipids
  • Proteins and carbohydrates
  • Proteins, phospholipids and some carbohydrates
Plasma membrane is fluid structure due to presence of 
  • Carbohydrate
  • Lipid
  • Glycoprotein
  • Polysaccharide
Which of the following is an amphipathic molecule in plasma membrane?
  • Protein
  • Carbohydrates
  • Phospholipids
  • All of the above
What is the percentage of intrinsic proteins in the total proteins of plasma membrane?
  • 70%
  • 20%
  • 10%
  • 90%
Golgi body originates from which of the following?
  • E.R.
  • Mitochondria
  • Nucleus
  • Proplastid
Lysosomes are not helpful in which of the following?
  • Osteogenesis
  • Cellular digestion
  • Metamorphosis in frog
  • Lipogenesis
What is the average thickness of plasma membrane?
  • 7 $$\mathring {A}$$
  • 75-100 $$\mathring {A }$$
  • 100-150 $$\mathring {A }$$
  • 200 $$\mathring {A }$$
.................. cell organelle synthesizes steroids.
  • E. R.
  • Golgi body
  • Peroxisomes
  • Lysosomes
Which cell organelle secretes zymogen granules?
  • Lysosomes
  • Golgi body
  • Smooth E. R
  • Sphaerosomes
Rough E.R. is mainly responsible for 
  • Protein synthesis
  • Cell wall formation
  • Lipid synthesis
  • Cholesterol synthesis
Phospholipid synthase enzyme occur in 
  • RER
  • SER
  • Golgi body
  • Glyoxysome
Which structures are responsible for lipid synthesis respectively in plants and animal cells?
  • Smooth E. R.
  • Smooth and rough E. R.
  • Smooth E. R. and sphaerosomes
  • Sphaerosomes and smooth E. R.
Most of the cell organelles are derived from
  • Nucleus
  • Endoplasmic reticulum
  • Mitochondria
  • Chloroplast
Smooth E.R. of animal cell does not synthesize
  • Cholesterol
  • Phospholipid
  • Saturated fatty acid
  • Unsaturated fatty acid
RER is well developed in cell and engaged in the synthesis of 
  • Steroids
  • Fats
  • Vitamin
  • Proteins
................ is a main source of cellular membranes.
  • Endoplasmic reticulum
  • Golgi body
  • Mitochondria
  • Nucleus
GERL is concerned with the biogenesis of 
  • Golgibody
  • E.R.
  • Mitochondria
  • Lysosomes
The main organelle involved in modification and routing of newly synthesized proteins to their destinations is
  • Endoplasmic reticulum
  • Lysosome
  • Mitochondria
  • Chloroplast
Ribophorin I and II occur on the surface of 
  • Rough E.R.
  • Smooth E.R.
  • Golgi body
  • None of the above
................ is polymorphic cell organelles.
  • Ribosome
  • Lysosome
  • Chloroplast
  • Nucleus
The prokaryotic genetic system contains
  • DNA & histones
  • RNA & histones
  • Either DNA or histones
  • DNA but no histones
....................  is a cell organelle that is rich in hydrolases enzyme.
  • Mitochondria
  • Peroxisornes
  • Glyoxysomes
  • Lysosomes
Suicide bags of cells are
  • Endoplasmic reticulum
  • Lysosome
  • Golgi bodies
  • Vacuoles
System of membrane is also known as
  • Lysosome
  • E.R.
  • Mitochondria
  • Chloroplast
The endoplasmic reticulum is present in
  • Nucleus
  • Chromosomes
  • Nucleolus
  • Cytoplasm
Which cell organelle reduces the number of endoplasmic reticulum and mitochondria?
  • Lysosome
  • Endoplasmic reticulum
  • Mitochondria
  • Golgi body
E.R. is not related with
  • Plasmalemma
  • Golgi body
  • Mitochondria
  • Nucleus
The nucleus is the site for synthesis of: 
  • DNA
  • mRNA 
  • tRNA
  • All of the above
Osteogenesis and removal of dead cells are function of
  • Ribosome
  • Lysosome
  • Cell membrane
  • Vacuoles
In which of the following option, tubulin is not present?
  • Plasma membrane
  • Cilia
  • Flagella
  • Microtubule
Pericarp and petals contain
  • Chloroplast
  • Chromoplast
  • Leucoplast
  • Etioplast
Red colour of tomato and chilly is due to
  • Lycopene in chromoplast
  • Xanthophylls in chromoplast
  • Lycopene in chloroplast
  • Anthocyanin in leucoplast
Which part of cell cleans the waste substances present in it?
  • Lysosome
  • Ribosome
  • Endoplasmic reticulum 
  • Golgi body
Which of the following labilisers found on membrane of lysosome?
  • Cortisone and cortisol
  • Cholesterol and heparin
  • Testosterone and progesterone
  • Cholesterol and progesterone
Nucleus is a
  • Single layered structure
  • Three layered structure
  • Four layered structure
  • Two layered structure
Which of the following is not a character of prokaryote?
  • Lack of well organized nucleus
  • Presence of 70S ribosome
  • Presence of E.R.
  • Presence of plasma membrane
Which of the following is a character of prokaryotes?
  • Presence of membrane bound cell organelles
  • Presence of distinct nucleus
  • Nucleus is not distinct and cell wall is composed of mucopeptide
  • Cytoplasm contain 80S ribosomes
The smallest prokaryotic cell is
  • Mycoplasma
  • Cyanobacteria
  • Bacteria
  • Bacillus
Electron microscopic observation reveals the absence of intracellular membranes in the cell of
  • Eukaryota
  • Mycota
  • Thallophyta
  • Prokaryota
................ structure of prokaryotes is analogous to lysosome.
  • Mesosome
  • Genophore
  • Periplasmic space
  • Perinuclear space
Which of the following subtances are stored in an aleuroplast?
  • Starch
  • Oil and lipids
  • Proteins
  • Water and oil
Bacteria are not found in _________.
  • Soil
  • Ice
  • Sea
  • Distilled water
Which of the following is absent in an intact cell?
  • Microsomes
  • Golgi body
  • Glyoxysomes
  • Microtubules
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