Which of the following pair are correctly matched ?
(I) Amyloplasts Store proteins
(II) Mitochondrion Power house of the cell
(III) Stroma Chlorophyll pigment
(IV) Axoneme 9 + 2 array
(I) and (III) only
(II), (III) and (IV) only
(III) and (IV) only
(II) and (IV) only
Correct Answer :
D. (II) and (IV) only
Amyloplasts store carbohydrates (starch), e.g., potato whereas proteins are stored by aleuroplasts. Chlorophyll pigments are presents in the thylakoid.
Related Questions
The following diagram shows some of the missing structures in a plant cell marked as A, B, C, D E. Choose the option with their correct names.
A - Plasmodesmata, B - Rough endoplasmic reticulum, C - Golgi apparatus, D - Mitochondrion, E - Ribosomes
A - Desmosome, B - Rough endoplasmic reticulum, C - Golgi apparatus, D - Mitochondrion, E - Ribosomes
A - Plasmodesmata, B - Smooth endoplasmic reticulum, C - Golgi apparatus, D - Mitochondrion, E - Ribosomes
A - Tight junction, B - Rough endoplasmic reticulum, C - Golgi apparatus, D - Mitochondrion, E -Ribosomes
Choose the incorrect match.
Nucleus RNA
Lysosome Protein synthesis
Mitochondria Respiration
Cytoskeleton Microtubules
Plastids storing fat are called
Elaioplasts
Sphaerosomes
Aleuroplasts
Pyrenoids
Which of the following statements are correct ?
- In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome.
- The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins.
- RuBisCO is the most abundant protein in the whole biosphere.
- Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system. Of the above statements
(iii) and (iv)
(i) and (ii)
(ii) and (iii)
(i) and (iv)
Which one of the following is not considered as part of the endomembrane system?
Golgi complex
Peroxisome
Vacuole
Lysosome
Polysome is a chain of
oxysomes
sphaerosomes
ribosomes
dictyosomes
Which of the following statement is correct regarding vacuole?
It is membrane-bound and contains storage proteins and lipids.
It is membrane-bound and contains water and excretory substances.
It lacks membrane and contains air.
It lacks membrane and contains water and excretory substances.
The fluidity of membranes in a plant in cold weather may be maintained by
increasing the number of phospholipids with unsaturated hydrocarbon tails.
increasing the proportion of integral proteins.
increasing concentration of cholesterol in membrane.
increasing the number of phospholipids with saturated hydrocarbon tail.
Which cellular structure helps in transferring genetic information from one generation to another?
W
X
Y
Z
Identify the components labelled as A, B, C, D and E in the diagram given below from the list (i) to (viii).
- Cristae of mitochondria
- Inner membrane of mitochondria
- Cytoplasm
- Smooth endoplasmic reticulum
- Rough endoplasmic reticulum
- Mitochondrial matrix
- Ribosome
- Nucleus
A - (viii), B - (v), C - (vii), D - (iii), E - (iv)
A - (i), B - (iv), C - (vii), D - (vi), E - (iii)
A - (vi), B - (v), C - (iv), D - (vii), E - (i)
A - (v), B - (i), C - (iii), D - (ii), E - (iv)
Both the membranes of mitochondrion are
structurally different but functionally similar.
structurally as well as functionally different.
structurally similar but functionally different.
structurally different but functionally similar.
The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D).
Select the part correctly matched with its function.
Part (D): Outer membrane Gives rise to inner membrane by splitting.
Part (B): Inner membrane Forms infoldings called cristae.
Part (C): Cristae Possess single circular DNA molecule and ribosomes.
Part (A): Matrix Major site for respiratory chain enzymes.
Select the statements which are related to Schwann.
- He reported that cells have a thin outer layer which is today known as plasma membrane
- Cell wall is a unique character of the plant cell.
- Body of plants and animals are composed of cells and products of cells.
Only (i)
Only (iii)
(i) and (iii)
All of these
Integral proteins of cell membrane occur on/in
inner surfaces
outer surfaces
phospholipid matrix
inner and outer surfaces
Which of the following statements is/are correct ?
- The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles.
- ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
- Ribosomes are involved in protein synthesis.
- Mitochondria help in oxidative phosphorylation and generation of ATP.
(ii), (iii) & (iv)
(i) only
(ii) only
(iii) only
Which of the following will determines the shape of the cells and provides a strong structural support to prevent the bacterium from bursting or collapsing?
Plasmids
Cell wall
Mesosome
Cell membrane
The cell theory was given in year 1839 by Schleiden and Schwann. According to this theory all organisms are composed of cell and cells are the basic unit of life.
How did this theory help in the field of science?
It helped to study the working of cells.
It helped in curing diseases caused by cell.
It helped in restating the earlier theories on cell.
It helped in introducing the use of microscopes to study cell.
In the given figure of animal cell, one orginelle is marked as A. Select the correct identification and function of the organelle A from the given option.
Endoplasmic reticulum Synthesis of lipids.
Mitochondria Produce cellular energy in the form of ATP.
Golgi body Provides packaging material.
Lysosomes Secrete hydrolytic enzymes.
Function of contractile vacuole in Amoeba is
excretion and osmoregulation.
digestion and respiration.
osmoregulation and transportation.
none of the above.
Read the folowing statements and identify the correct option.
- Contractile vacuole takes part in osmoregulation and excretion.
- Food vacuole is formed by engulfing the food particles.
- The vacuole is bound by a double membrane called tonoplast.
- Vacuole can occupy upto 90 percent of the volume of the cell.
(i) and (ii)
(ii) and (iv)
(i), (ii) and (iv)
None of the above
Most of water, in mature plant cells occurs in
nucleus
cell wall
vacuoles
cytoplasm
8.A student was given cell samples (A and B) to identify parts which are highlighted. He observed the samples under the microscope and list down the function of the part of cell sample. The information collected by the student is listed in the table below, on the basis of which the student infers that the samples contain the organelles.
| Sample A | Sample B |
|---|---|
| Make energy available for cellular metabolism | Generates ATP and synthes izes s ugar |
| Absent in cell that carry oxygen throughout the body | Present in plant cell |
| Called the energy currency of cell | Source o f all the food energy |
Identify the part highlighted in the sample A and B and explain why they were called as semi-autonomous organelles?
Sample A - Mitochondria, Sample B - Chloroplast; because both the organelles are double membrane bound structure.
Sample A- Mitochondria, Sample B - Chloroplast; because they both are capable of synthesis of their own proteins only.
Sample A - Mitochondria, Sample B - Chloroplast; because they are capable of synthesis of their own proteins and contain their own DNA.
Sample A- Mitochondria, Sample B - Chloroplast; because they contain their own DNA to transfer the genetic information from one generation to another.
Prokaryotic and eukaryotic flagella differ in the
type of movement and placement.
location and mode of functioning.
microtubular structure and function.
microtubular organization and type of movement.
Which one of the following structures between two adjacent cells is an effective transport pathway?
Plasmodesmata
Plastoquinones
Endoplasmic reticulum
Plasmalemma
Protein synthesis in an animal cell occurs
on ribosomes present in cytoplasm as well as in mitochondria.
on ribosomes present in the nucleolus as well as in cytoplasm.
only on ribosomes attached to the nuclears envelope and endoplasmic reticulum.
only on the ribosomes present in cytosol.
Which one of the following organelle given below is correctly matched with its function ?
Golgi apparatus Protein synthesis
Golgi apparatus Formation of glycolipids
Rough endoplasmic reticulum Protein synthesis
Rough endoplasmic reticulum Formation of glycoproteins
Which of the following statement of a bacterial cell is/are correct?
- Mesosome is formed by the extensions of plasma membrane into the cell.
- The pili are elongated tubular structures made up of a protein.
- Flagellum is composed of filament, hook and basal body.
- Ribosomes are about 30 nm by 50 nm in size.
(i), (ii), (iii)
All of the above
(ii) & (iv)
None of the above
The main organelle involved in modification and routing of newly synthesized proteins to their destinations is
chloroplast
mitochondria
lysosome
endoplasmic reticulum
Chromosomes having equal or almost equal arms are called
metacentric
acrocentric
polycentric
acentric.
Match column-I with column-II and select the correct option.
| Column - I | Column - II |
|---|---|
| A. Golgi apparatus | I. Storage |
| B. Mitochondria | II. Photosynthesis |
| C. Vacuoles | III. Transport |
| D. Grana | IV. Secretion |
| .. | V. Respiration |
A - IV, B - V, C - I, D - II
A - I, B - II, C - IV, D - III
A - IV, B - I, C - II, D - III
A - I, B - II, C - III, D - IV