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651.

The father of cytology isA. Robert HookeB. NageliC. Matthians ScheidenD. Virchow

Answer» Correct Answer - A
652.

Cellulose is the major component of cell walls ofA. PseudomonasB. SaccharomycesC. PythiumD. Xanthomonas

Answer» Correct Answer - C
653.

Which of the following processes requires ATP ?A. Active processB. Passive processC. Both a and bD. None of these

Answer» Correct Answer - A
654.

Endoplasmic reticulum is in continuation withA. Golgi bodyB. Nuclear wallC. MitochondriaD. Cell wall

Answer» Correct Answer - B
655.

Cell wall consists ofA. Lignin, hemicellulose, protein and lipidB. Hemicellulose, cellulose, tubulin and ligninC. Lignin, hemicellulose, pectin and lipidD. Lignin, hemicellulose, pectin and cellulose.

Answer» Correct Answer - D
656.

Name the four types of lysosomes.

Answer» Primary, secondary, reisdual bodies and autophagic vacuoles.
657.

This part of the cell bears genetic information. A) Nucleus B) NucleolusC) Ribosomes D) Golgi complex

Answer»

Correct option is A) Nucleus

658.

Polytene chromosomes were discovered inA. ChironomusB. DrosophilaC. MuscaD. Culex

Answer» Correct Answer - A
Polytene chromosomes were discovered in Chironomus.
659.

The resolving power of electron microscope isA. 10B. `10^(5)`C. `100^(5)`D. `1000^(5)`

Answer» Correct Answer - B
660.

The number of barr bodies in XXXXY isA. 1B. 2C. 3D. 4

Answer» Correct Answer - C
661.

Which of the following organelles stores proteins?A. AmyloplastsB. AleuroplastsC. PlastidsD. Elaioplasts (oleosomes)

Answer» Correct Answer - B
662.

In chloroplasts the chlorophyll is located inA. GranaB. PyrenoidC. StramaD. Both grana and stroma

Answer» Correct Answer - A
663.

Mitochondria are not found inA. Mature WBCB. Mature RBCC. Nerve cellD. Sperm

Answer» Correct Answer - B
664.

Genes for cytoplasmic male sterility in plants are located inA. Mitochondrial genomeB. Chloroplast genomeC. Nuclear genomeD. Cytosol

Answer» Correct Answer - D
665.

The mitochondrial DNA differs from the nuclear DNA inA. Having association with histonesB. Being circular in natureC. Having higher C-G ratioD. All of these

Answer» Correct Answer - B
666.

Select the wrong statement from the followingA. Both chloroplasts and mitochondria contain an inner and outer membrane.B. Both chloroplast and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane.C. Both chloroplasts and mitochondna contam DNA.D. The chloroplasts are generally much larger than mitochondria.

Answer» Correct Answer - B
667.

Ribosomal RNA is synthesized in `:`A. NucleoplasmB. NucleoplasmC. LysosomesD. Nucleolus

Answer» Correct Answer - D
668.

Centrosome are presentA. In plant cell onlyB. In animal cellC. In both plant and animal cellD. None of these

Answer» Correct Answer - B
669.

What is absent in mammalian erythrocytes?A. Aerobic respirationB. NucleusC. DNAD. All of these

Answer» Correct Answer - D
670.

The Golgi complex plays a major roleA. in trapping the light and transforming it into chemical energyB. in digesting proteins and carbohydratesC. as energy transferring organellesD. in post-translational modification of proteins and glycosidation of lipids

Answer» Correct Answer - D
Golgi complex plays a major role in post-translational modification of proteins and glycosidation of lipids. Chloroplasts contain chlorophyll, which traps light energy and transforms it into chemical energy. Lysosomes are invovled in digesting proteins, fats and carbohydrates. mitochondria are energy transferring organelles.
671.

The Golgi complex plays a major roleA. As energy transferring organellesB. In post-translational modification of proteins and glycosylation of lipidsC. In trapping the light and transforming it into chemical energyD. In digesting proteins and carbohydrates

Answer» Correct Answer - B
The Golgi complex plays a major role in post translational modification of proteins and glycosylation of lipids.
672.

Colour of flower petails is due toA. XanthophyllB. CarotenesC. AnthocyaninD. Phycoerythrin

Answer» Correct Answer - C
Colour of flower petals is due to anthocyanin.
673.

Binding of specific protein on regulatory DNA sequence can be studied by means ofA. ultra centrifugationB. electron microscopeC. light microscopeD. X-rays crystallography

Answer» Correct Answer - D
X-ray crystallography is an important technique in molecular biology to analyse the structure and orientation of molecules. It is used to find out 3-D positions of atoms in the molecules of DNA, RNA and proteins, binding of specific protein on regulatory DNA sequences, 3-D structure of haemoglobin, insulin, DNA, proteins, collagen fibre, muscle and actin protein.
674.

Nuclear membrane is absent inA. PlantaeB. ProtistaC. Monera/NostocD. Fungi

Answer» Correct Answer - C
Nuclear membrane is absent in Monera/Nostac/prokaryotes.
675.

A living cell can be best studied by means ofA. Dark field microscopeB. Electron microscopeC. Phase`-`contrast microscopeD. Compound microscope

Answer» Correct Answer - C
A living cell can be best studied by means of phasecontrast microscope.
676.

Write some examples for prokaryotic cells.

Answer»

Bacterium, Cyanobacteria and Blue green algae are examples for prokaryotic cells.

677.

Mark (✓) on the correct option in the table given below.Part of CellAnimal CellPlant Cell1. Cell membranePresent/ AbsentPresent/ Absent2. Position of nucleusIn Centre/on and sideIn Centre/ on one side3. Size of vacuoleSmall/bigSmall/big4. PlastidPresent/ AbsentPresent/ Absent

Answer»

Animal Cell: 

1. Absent (✓) 

2. in center (✓) 

3. small (✓) 

4. absent (✓) 

Plant Cell : 

1. Present (✓) 

2. on one side (✓) 

3. big (✓) 

4. Present (✓)

678.

Plastid containing chlorophyll is (a) Chromoplast(b) Chloroplast (c) Lucoplast (d) Amiloplast

Answer»

(b) Chloroplast

679.

Who discovered cell? (a) Robert Brown (b) Robert Hooke (c) Schleiden (d) Schwann

Answer»

(b) Robert Hooke

680.

Which of these is absent in the animal cell?(a) Mitochondria (b) nucleus (c) Cytoplasm (d) plastid

Answer»

Plastid is absent in the animal cell.

681.

Red blood cells are (a) Spindle shaped (b) Square (c) Round (d) Branched

Answer»

Red blood cells are Round

682.

The structural unit of animal is(a) Tissue (b) Organ (c) Cell (d) Organ system

Answer»

The structural unit of animal is Cell.

683.

Which of the following is not found in plant cell (a) Plastid (b) Mitochondria (c) Nucleous (d) Centrosome

Answer»

(d) Centrosome

684.

Aleuroplasts in a cell storeA. StarchB. OilC. ProteinD. Nutrients

Answer» Correct Answer - C
685.

Give the term used for a pile of thylakoids.

Answer» Correct Answer - Granum.
686.

X and Y-chromosomes in humans areA. idiosomesB. sex chromosomesC. heterosomesD. all of these

Answer» Correct Answer - D
687.

Sex chromosomes are also known asA. allosomesB. somatic chromosomeC. upto `5000_(mu)` in lengthD. all of these

Answer» Correct Answer - A
688.

Where are ETS coenzymes located in mitochondria ?

Answer» Inner membrane.
689.

Name the components of endoplasmic reticulum.

Answer» Cisternae, tubules and veiscles.
690.

When a food containing phogosome fuses with an enzyme containing Iyososome ______is formed.A. Secondary IysosomeB. primary IysosomeC. VacuoleD. residual body

Answer» Correct Answer - A
691.

What type of DNA do mitochondria have ?

Answer» Circular, naked.
692.

Name the components of an oxysome.

Answer» Head piece, stalk and base piece.
693.

What are mitoribosomes ?

Answer» Ribosomes present in mitochondria.
694.

Name the enzyme an oxysome represents.

Answer» ATPase (ATP synthetase).
695.

Give the role of mitochondria ?

Answer» ATP suntheiss.
696.

Give the role of adhesive sites in mitochondria.

Answer» Join the two mitochondrial membranes, and let proteins pass from the outer to the inner membrane.
697.

What is the role of contractile vacuole in protozoans ?

Answer» Osmoregulation and excretion.
698.

Material exchange through nucleopores is facilitated byA. Lamina propriaB. lipid layerC. NucleoplasminD. Nucleolus

Answer» Correct Answer - B::C
699.

What is the role of contractile vacuole ?

Answer» Osmoregulation
700.

A cell placed in a strong salt solution, will shrink becauseA. salt solution enters the cellB. cytoplasm of the cell begins to decomposeC. water comes out of the cell to develop equilibriumD. all of these

Answer» Correct Answer - C