A single-stranded; radiolabelled molecule of nucleic acids is called
1.plasmid
2.vector
3.probe
4.selectable marker
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Antibiotics are used in genetic engineering. They are useful
1.to keep culture free of microbial infections
2. to select healthy vectors
3. to identify replication start sites
4.as selectable markers
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Cell division occurring during cleavage
1.meiosis
2.mitosis
3.amitosis
4. closed mitosis
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Chloroplast does not contain
1.xanthophyll
2.anthocyanin
3.carotene
4.chlorophyll ‘b’
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Early prophase of a diploid cell has_____ sets of chromosomes; telophase of a diploid cell has ____ sets of chromosomes
1. 1;2
2. 2;1
3. 2;2
4. 1;1
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Formation of cell plate starts at
1.G2 phase
2. prophase
3. telophase
4. S phase
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A phosphodiester bond is present in
1.Nucleic acids in a nucleotide
2.Monosaccharides in a polysaccharide
3.Amino acids in a polypeptide
4.Fatty acids in a diglyceride
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A protein complex; that links sister chromatids; is
1.actin
2. cohesin
3.myosin
4. actomyosin
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A vector that can clone only a small DNA fragment is
1.cosmid
2.plasmid
3. Yeast artificial chromosome
4.Bacterial artificial chromosome
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Which of the following pigment is present in carrots?
1.𝝱-carotene
2. lycopene
3. lutein
4.fucoxanthin
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An organism that forms a symbiotic association with Anthoceros
1.Spirogyra
2.Nostoc
3.Ulothrix
4.All of the above
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Anthocyanin pigments are
1. water-insoluble and located in chromoplasts
2.water-soluble and located in chloroplasts
3.water-soluble and located in vacuoles
4.water-insoluble and located in vacuoles
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Antibodies are secreted by
1.adipose cells
2.reticular cells
3.plasma cells
4.mast cells
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Blue-green algae are included in
1.Prokaryotes
2.Protista
3.Fungi
4.Bryophytes
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Colchicine arrests cell division at
1.interphase
2. prophase
3.metaphase
4. anaphase
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Collagen is
1.carbohydrate
2.lipid
3.fibrous protein
4.globular protein
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Colour of tomato changes from green to red due to
1.chromoplast gets converted to the chloroplast
2.chromoplast disappears and chloroplast is formed
3.chloroplast gets converted to chromoplast
4.chloroplast disappears and chromoplast is formed
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Coloured portion of the nostoc cell is
1.genophore
2. inner centroplasm
3.outer chromoplasm
4.central body
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Cyanobacteria are
1. oxygenic without nitrogenase
2. non-oxygenic without nitrogenase
3.oxygenic with nitrogenase
4.non-oxygenic with nitrogenase
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DNA synthesis takes place during_________ phase
1.M phase
2.G2 phase
3.G1 phase
4.S phase
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Find the correct statement
1.Paramecium; Penicillium and Plasmodium belong to the same kingdom
2.Nostoc and Anabaena come under Protista
3.lichen is a symbiotic association of an alga and Protozoan
4. Yeast is a fungus and is used in bread and beer production
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Find the correct statement
1.Areolar tissue is a loose connective tissue
2.Tendon is a specialized connective tissue
3.Cartilage is a loose connective tissue
4.Adipose tissue is a dense connective tissue
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Find the incorrect statement about plasmids
1.they are circular
2.they replicate independently
3. they are transferrable
4.they are single stranded
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Heterocyst of Nostoc are
1.intercalary
2.terminal
3. both terminal and intercalary
4. none
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Histamine is secreted by
1.histiocytes
2.lymphocytes
3. fibroblasts
4. mast cells
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If the plasmid and the foreign DNA are cut by the same restriction endonuclease; recombinant DNA can be formed by joining both by
1.Polymerase III
2. EcoRI
3. Ligase
4.Taq polymerase
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If you want to count the number of chromosomes; which is the best stage to do so?
1. telophase
2. interphase
3.prophase
4.metaphase
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In comparison to human erythrocytes; frog’s erythrocytes are
1.smaller and fewer
2.nucleated and without haemoglobin
3.enucleated but with haemoglobin
4.nucleated and with haemoglobin
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In which of the following organelle; peptide synthesis takes place?
1.ribosomes
2.chromoplasts
3.chloroplasts
4.mitochondria
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Ligament is
1.modified yellow elastic fibrous tissue
2. inelastic white fibrous tissue
3.modified white fibrous tissue
4.none of the above
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Mast cells contain
1.heparin and histamine
2.heparin and calcitonin
3.serotonin and melanin
4. vasopressin and relaxin
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Mitotic anaphase and metaphase have
1. chromosomes are halved at anaphase
2. chromatids are halved at anaphase
3. the same number of chromosomes and chromatids
4.both chromosomes and chromatids are halved at anaphase
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Nostoc form
1.compound colony
2.simple colony
3.both (a) and (b)
4.None of these
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Nucleolus and endoplasmic reticulum start disappearing at
1.late prophase
2.early prophase
3.late metaphase
4.early metaphase
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Peptidoglycan present in the cartilage is
1.ossein
2. chondroitin
3.cartilagin
4.casein
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Protein storing plastid is
1.chromoplast
2. elaioplast
3.amyloplast
4. aleuroplast
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Replication of plasmid DNA other than initiation is controlled by
1.bacterial gene
2.mitochondrial gene
3. plasmid DNA
4.none of these
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Sexual reproduction is absent in
1. Volvox
2. Nostoc
3. Aspergillus
4.Ulothrix
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The DNA molecule used for integrating foreign gene for cloning is called
1.vector
2.carrier
3. template
4. transformer
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The largest extracellular material present in the
1. Stratified epithelium
2.Striated muscle
3.Myelinated nerve fibres
4.Areolar tissue
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The Ti plasmid is found in
1. Agrobacterium
2.Yeast as a 2mm plasmid
3. Rhizobium of the roots of leguminous plants
4.Azotobacter
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Tip of the nose and external ears have
1.areolar tissue
2.ligament
3.cartilage
4.bone
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Uridine present in RNA is
1. nucleotides
2.pyrimidine
3.purine
4.nucleoside
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Where does spindle fibres attach to during metaphase?
1.kinetochore of the chromosome
2.kinetosome of the chromosome
3.centromere of the chromosome
4. telomere of the chromosome
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Which of the angiosperm contains Nostoc as an endophyte?
1.Gunnera manicata
2.Arachis hypogea
3.Melia indica
4.None of the above
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Which of the following pigment impart a red colour to tomato?
1.erythrocyanin
2.anthocyanin
3.𝝱-carotene
4. lycopene
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Which of the following plastid doesn’t store food?
1.aleuroplasts
2. amyloplasts
3.chromoplasts
4.elaioplasts
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Which of the following plastid is found in ripe fruits?
1.chromoplast
2.chloroplast
3.leucoplast
4. amyloplast
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Which of the following structure contains a polar nodule on both ends
1.heterocyst
2. hormogonia
3.akinetes
4.None of the above
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Which of the plastid(s) contains carotenoids?
1. leucoplast
2.chloroplast
3.chromoplast
4.both (b) and (c)
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