Related Questions
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4
Which of the following pair are correctly matched.
A. Microtubules Structural components of cilia
B. Centrioles Store hydrolytic enzymes
C. Amyloplasts Store oil protein and starch in plants
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4
Prokaryotic and eukaryotic flagella differ in the
A. type of movement and placement.
B. location and mode of functioning.
C. microtubular structure and function.
D. microtubular organization and type of movement.
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4
Choose the wrong statements regarding bacterial cell
- Glycocalyx is the outermost envelope in bacteria.
- The glycocalyx could be a loose sheath called capsule.
- The glycocalyx may be thick and tough called slime layer.
- A special structure formed by the plasma membrane is called mesosome.
- Small bristle like fibres sprouting out of the cell are called fimbriae.
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4
The given figures show two types of cell. Which structures are common to both the cells?
C. Ribosomes and flagella
D. Ribosomes and cell wall
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4
Study the following statements on cilium or flagellum and answer the question.
- Cilium / Flagellum contains an outer ring of nine doublet microtubules surrounding two singlet microtubules.
- Cilia are smaller which work like oars, causing the movement of either the cells or surrounding fluid.
- Flagella are comparatively longer and responsible for cell movement.
- Cilium and flagellum are covered with plasma membrane.
Which of the above statements are correct?
B. (i), (ii), (iii) and (iv)
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4
A component of cytoskeleton is
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4
Identify the cell organelle given below. Which is an important site of formation of glyeoproteins & glycolipids
A. Rough endoplasmic reticulum
B. Smooth endoplasmic reticulum
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4
Membranous extensions in blue green algae are known as
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4
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?
A. It helped to study the working of cells.
B. It helped in curing diseases caused by cell.
C. It helped in restating the earlier theories on cell.
D. It helped in introducing the use of microscopes to study cell.
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4
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.
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4
_______________ is the important site of formation of glycoproteins and golycolipids.
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4
The membrane of the erythrocytes has approximately ___% of proteins and ___% lipids.
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4
Which cellular structure helps in transferring genetic information from one generation to another?
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4
Which of the following terms is not correctly matched with its feature?
A. Osmosis Movement of water by diffusion.
B. Nucleoplasm Site of active synthesis of ribosomal RNA.
C. Mesosome Infolding of cell membrane and characteristics of eukaryotes.
D. Pili Elongated tubular surface structures (made of special protein) of bacteria.
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4
9.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 |
Explain why the samples were belonged to eukaryotic cell and not prokaryotic cell? Because,
A. eukaryotic cell have membrane bound organelles.
B. eukaryotic cell have non - membrane bound organelles.
C. eukaryotic cell are smaller and multiply more rapidly than prokaryotic cells.
D. eukaryotic cell are larger and multiply more rapidly than prokaryotic cells.
What is the correct answer?
4
Which of the following statements are correct?
A. Na+/K+ pump is an example of active transport.
B. In plant cells lipid like steroidal hormones are synthesized in SER.
C. In plant cells, the vacuoles can occupy up to 10% of the volume of the cell.
D. Chlorophyll and leucoplast are responsible for trapping light energy essential for photosynthesis.
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4
Plastids storing fat are called
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4
Basal bodies are associated with the formation of
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4
Grana are
A. protein storing plastids.
D. individual thylakoids present in stroma.
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4
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?
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4
Who proposed the theory that Cells arise only from the pre-existing cells?
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4
Which one of the following structures between two adjacent cells is an effective transport pathway?
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4
Match column-I with column-II and choose the correct option.
Column-I | Column-II |
---|
(Chromosome) | (Position of Centromere) |
A. Metacentric | I. At the tip |
B. Submetacentric | II. Almost near the tip |
C. Acrocentric | III. At the middle |
D. Telocentric | IV. Slightly away from the middle |
A. A III; B IV; C II; D I
B. A IV; B III; C II; D I
C. A I; B II; C III; D IV
D. A IV; B III; C I ; D II
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4
Consider the following statements and choose the correct statement.
- The endomembrane system includes mitochondria, chloroplast and peroxisomes.
- Smooth endoplasmic reticulum is the major site for synthesis of lipid.
- Rough endoplasmic reticulum is actively involved in protein synthesis.
- Mitochondrial matrix possesses single circular DNA, a few RNA and 80S ribosomes. Of the above statements.
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4
Satellite means
A. terminal part of the chromosome beyond secondary constriction.
B. terminal part of the chromosome beyond primary constriction.
C. terminal part of chromosome beyond tertiary constriction.
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4
Given below are some characters of a cell organelle identify the correct organelle which shows all the characters described above.
- It is a membrane bound space found in the cytoplasm.
- It is bound by a single membrane called tonoplast.
- It contains water, sap, excretory products and other materials not useful to the cell.
- It has higher concentration of sap than the cytoplasm.
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4
The fluidity of membranes in a plant in cold weather may be maintained by
A. increasing the number of phospholipids with unsaturated hydrocarbon tails.
B. increasing the proportion of integral proteins.
C. increasing concentration of cholesterol in membrane.
D. increasing the number of phospholipids with saturated hydrocarbon tail.
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4
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. A - IV, B - V, C - I, D - II
B. A - I, B - II, C - IV, D - III
C. A - IV, B - I, C - II, D - III
D. A - I, B - II, C - III, D - IV
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4
Which of the following pair lack the unit membrane?
B. Mitochondria and chloroplast
C. Ribosome and nucleolus
D. Golgi body and lysosome
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4
Which of the following statements is/are correct ?
- The shape of the cells may vary with the function they perform.
- Human RBC is about 7.0 ??m in diameter.
- Cytoplasm is the main area of cellular activities.
- Various chemical reactions occur in cytoplasm to keep the cell in the living state.
A. (i), (ii), (iii) and (iv)