Consider the given cell organelles.
A. 1, 2 and 3
B. 1 and 2
C. 1 and 3
D. Only 2
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Mitochondria are able to produce their own . . . . . . . .
A. nucleus
B. proteins
C. chloroplasts
D. digestive enzymes
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The phosphotransferase system (PTS) always uses which of the following as the energy form?
A. Adenosine triphosphate (ATP)
B. Nicotinamide dinucleotide phosphate (NADP)
C. Adenosine monophosphate (AMP)
D. Phosphoenol pyruvate (PEP)
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Cytokinesis of a plant cell is achieved by the formation of
A. Cleavage furrow
B. Groove
C. Cell plate
D. All of the above
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Dinosaurs were in
A. Paleozoic era
B. Cenozoic era
C. Mesozoic era
D. Pleistocene era
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The rough endoplasmic reticulum is also known as
A. Protoplasm
B. Tonoplast
C. Ergastoplasm
D. All of the above
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Nucleotide constituent of RNA are
A. adenine, guanine, cytosine, uracil
B. adenine, guanine, cytosine, thiamine
C. thymine, cytosine, xanthine, uracil
D. cytosine, adenine uric acid, guanine
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Darwin's theory of natural selection is based on
A. Over production
B. Struggle for existence and variation
C. Survival of the fittest
D. All of the above
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The inner membrane of mitochondrion is thrown up into a series of folds called
A. Thylakoids
B. Grana
C. Cisternae
D. Cristae mitochondriales
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The fully reduced form of ubiquinone, with hydrogen atoms attached to both oxygens is called as
A. Semiquinone
B. Hydroquinone
C. Quinone
D. None of these
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The small particles on the outer membrane of mitochondria are stalkless and are called
A. Subunits of Fernandez-Moran
B. Subunits of Parson
C. Lateral-Central (LC) particles
D. F1 particles
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Leptotene chromosomes may be irregularly arranged or may be polarized towards the centrioles forming
A. Matting threads
B. A bouquet
C. Protein fibrils
D. A synaptonemal complex
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The cellular and molecular control of programmed cell death is known as
A. apoptosis
B. ageing
C. degeneration
D. necrosis
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Woodcock (1973) showed that chromatin appears to have a 'string of beads' structure and is made up of a number of repeating units which are called
A. Nucleosomes
B. Nu bodies
C. B fibres
D. Protamines
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Cells, in living organisms, adhere to each other by means of junctions called
A. Dictyosomes
B. Plasmosomes
C. Glycosomes
D. Desmosomes
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Which one of the following is known as the 'immovable property' in the cell?
A. Carbohydrate
B. Fat
C. Protein
D. Nucleic acid
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In Protoplasm, fat store in the form of
A. polypeptide
B. triglyceride
C. polysaccharide
D. nucleoside
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The nucleoli and nuclear envelope disappear in which phase of mitosis?
A. Metaphase
B. Prophase
C. Anaphase
D. Telophase
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Consider the following statements regarding mitochondria and choose the correct answer:
A. Only 1 and 2 are correct
B. Only 2 and 3 are correct
C. Only 3 is correct
D. 1, 2 and 3 are correct
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The fluid mosaic model explains
A. only structural aspects of cell membrane
B. only functional aspects of cell membrane
C. both structural and functional aspects of cell membrane
D. only fluidity of membrane
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