Description : Modification of proteins and lipids as glycopeptides and lipo-proteins occur in (A) Ribosomes (B) Golgi apparatus (C) SER (D) All A, B and C
Last Answer : (B) Golgi apparatus
Description : Nissl’s bodies are mainly composed of (a) proteins and lipids (b) DNA and RNA (c) nucleic acids and SER (d) free ribosomes and RER.
Last Answer : (d) free ribosomes and RER.
Description : Nissl bodies are mainly composed of (1) Proteins and lipids (2) DNA and RNA (3) Nucleic acids and SER (4) Free ribosomes and RER
Last Answer : (4) Free ribosomes and RER
Description : Detoxification of harmful drugs is the function (A) RER (B) SER (C) Both A and B (D) None of the above
Last Answer : (B) SER
Description : Leucoplast are found (A) Petals (B) Ripened fruits (C) Underground parts (D) Leaves
Last Answer : (C) Underground parts
Description : Cell wall consist of (A) One main layer (B) Two main layers (C) Three main layers (D) Four main layers
Last Answer : Three main layers middle lamellae primary wall secondary wall
Description : Which type of cell would probably be most appropriate to study chloroplasts (A) Conducting cell (B) Photosynthetic cell (C) Pericycle cell (D) All options are correct
Last Answer : Photosynthetic cell bcz chloroplast involved in synthesis of ATP by traping light
Description : Tay Sach’s disease is because of (A) Accumulation of proteins (B) Accumulation of glycogen (C) Accumulation of lipids (D) Accumulation of vitamins
Last Answer : (C) Accumulation of lipids
Description : One of the following is not double membranous structure (A) Mitochondrion (B) Vacuole (C) Chloroplast (D) Nucleus
Last Answer : (B) Vacuole
Description : Which one of following is true about chloroplast (A) It is underground part (B) It helps in pollination (C) Self replicating organelle (D) Involve in Lipid synthesis
Last Answer : (C) Self replicating organelle
Description : Liver rot is caused by a) Ascaris b) Fasciola c) Planaria d) Bipalium
Last Answer : b) Fasciola
Description : Cnidoblast are found in a) Cnidaria b) Protista c) Porifera d) Placozoa
Last Answer : a) Cnidaria
Description : Internal buds of sponges produced during adverse conditions a) Archaeocytes b) Osculum c) Micropyle d) Gemmule
Last Answer : d)Gemmule
Description : Earthworms used in vermi composting a) Eisenia foetida, Perionyx excovatus, Eudrilus eugineae b) Pheretima posthuma & Megascolex mauritius c) Bombyx mori & Apis indica d) None of the above
Last Answer : a) Eisenia foetida, Perionyx excovatus, Eudrilus eugineae
Description : Chikungunya is a a) Bacterial disease b) Viral disease c) Fungal infection d) None of the above
Last Answer : b) Viral disease
Description : Malaria is transmitted through a) Female culex mosquito b) Female anopheles mosquito c) Female aedes mosquito d) None of the above
Last Answer : b) Female anopheles
Description : Example of cyclostomata a) Petromyzon b) Ascidia c) Amphioxus d) Narcine
Last Answer : a) Petromyzon
Description : The reproductive zooids of obelia colony a) Hydrotheca b) Perisarc c) Blastostyle d) manubrium
Last Answer : a) Hydrotheca
Description : The larva of balanoglossus a) Planule b) Trochophore c) Tornaria d) Veliger
Last Answer : c) Tornaria
Description : Mention the class of Echinococcus a) Cestoda b) Trematoda c) Turbularia d) Nematodes
Last Answer : a) Cestoda
Description : Which of the following is an arachnid ectoparasite? a) Spider b) Scorpion c) Daphnia d) Tick 10. The function of contractile vacuole a) Nutrition b) Reproductionc) Osmoregulation d) Locomotion
Last Answer : c) Osmoregulation
Description : Name of the phylum to which ‘Arrow worms’ belong to a) Rotifera b) Hemichordata c) Chaetognatha d) Annelida
Last Answer : b) Hemichordata
Description : Name the mushroom coral a) Favia b) Fungia c) Madrepora d) Aurelia
Last Answer : c) Madrepora
Description : The first larvae of penaeus a) Zoea b) Nauplius c) Mysis d) Protozoea
Last Answer : d) Protozoea
Description : The animal which causes parasitic castration is a) Eupagurus b) Sacculina c) Crab d) Lepisma
Last Answer : b) Sacculina
Description : The connecting link between annelids and arthropods is a) Nereis b) Belostoma c) Peripatus d) Balanus
Last Answer : c) Peripatus
Description : ‘Aristotle lantern‘is seen in a) Antedon b) Star fish c) Echinus d) Ophiothrix
Last Answer : a) Antedon
Description : Name the rectal ciliate a) Paramecium b) Plasmodium c) Opalina d) Actinophrys
Last Answer : c) Opalina
Description : The causative organism of gambian fever a) Leishmania b) Trypanosoma c) Amoeba d) Entamoeba
Last Answer : b) Trypanosoma
Description : The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes ... peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria
Last Answer : Ans: B
Description : .Viruses possess (a) ribosomes to synthesize protein (b) organelle for its vital mechanism (c) either DNA or RNA (d) none of these.
Last Answer : (c) either DNA or RNA
Description : The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria
Last Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis
Description : 26. DNA is a better genetic material than RNA because ... e) DNA is chemically less reactive. f) DNA is structurally more stable. g) DNA is non-catalytic and less easily degradable. h) All of the above.
Last Answer : h) All of the above.
Description : 6. DNA is a better genetic material than RNA because ... a) DNA is chemically less reactive. b) DNA is structurally more stable. c) DNA is non-catalytic and less easily degradable. d) All of the above.
Last Answer : d) All of the above.
Description : Both DNA and RNA are composed of _______ a. polynucleotides b. genes c. polysaccharides d. polypeptides
Last Answer : a. polynucleotides
Description : Transfer RNA transfers (A) Information from DNA to ribosomes (B) Information from mRNA to cytosol (C) Amino acids from cytosol to ribosomes (D) Proteins from ribosomes to cytosol
Last Answer : Answer : C
Description : The mechanism of antibacterial action of tetracycline involves (a) Binding to a component of the 50S ribosomal subunit (b) Inhibition of translocase activity (c) Blockade of binding of ... (d) Selective inhibition of ribosomal peptidyl transferases (e) Inhibition of DNA-dependent RNA polymerase
Last Answer : Ans: C
Description : At a chromosome replication fork, the lagging strand consists of__ That is joined by___. a. RNA sequences; DNA ligase b. Okazaki Fragments; RNA Polymerase c. RNA sequences; ribosomes d. Okazaki fragments; DNA ligase
Last Answer : d. Okazaki fragments; DNA ligase
Description : The role of molecular chaperones is to A-facilitate binding of ribosomes to mRNA B-degrade newly synthesized polypeptides that contain inaccurate sequences C-.facilitate binding of RNA polymerase to DNA D-aid a newly synthesized polypeptide in folding to its proper shape
Last Answer : -aid a newly synthesized polypeptide in folding to its proper shape
Last Answer : aid a newly synthesized polypeptide in folding to its proper shape
Description : RNA is composed of strands of nucleotides that are read as a 3 nucleotide codon. These are distinguished by tRNAs that match the codons on one end and carry individual building blocks of a protein chain. What are these building blocks of protein that tRNAs bind?
Last Answer : Amino Acids
Description : Thermococcus, Methanococcus and Methano- bacterium exemplify (a) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria (b) bacteria that ... that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
Last Answer : (c) archaebacteria that contain protein homologous to eukaryotic core histones
Description : Which of the following act as the blueprint or template for the process of protein synthesis that takes place on ribosomes? A.rRNA B.DNA C.tRNA D.mRNA
Last Answer : mRNA
Description : What is true about ribosomes? (a) The prokaryotic ribosomes are 80S, where “S” stands for sedimentation coefficient. (b) These are composed of ribonucleic acid and proteins. (c) These are found only in eukaryotic cells. (d) These are self-splicing introns of some RNAs
Last Answer : (b) These are composed of ribonucleic acid and proteins.
Description : What is true about ribosomes ? (1) These are self - splicing introns of some RNAs (2) The prokaryotic ribosomes are 80S, where “S” stands for sedimentation coefficient (3) These are composed of ribonucleic acid and proteins (4) These are found only in eukaryotic cells
Last Answer : (3) These are composed of ribonucleic acid and proteins
Description : An important step in protein synthesis is transcription. Which of the following statement(s) is/are true concerning this process? a. The first step in gene transcription involves separating the double helix ... nucleus to the cytoplasm d. Only one protein can be produced from an initial mRNA strand
Last Answer : Answer: c Transcription of a gene begins at an initiation site associated with a specific DNA sequence, termed a promoter region. After binding to DNA, the RNA polymerase opens up a short ... different proteins from the same gene. mRNA is exported from the nucleus only after processing is complete
Description : Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells) (a) both sense and anti-sense RNA (b) a particular hormone (c) an antifeedant (d) a toxic protein.
Last Answer : a) both sense and anti-sense RNA
Description : Viruses have (a) DNA enclosed in a protein coat (b) prokaryotic nucleus (c) single chromosome (d) both DNA and RNA.
Last Answer : (a) DNA enclosed in a protein coat
Description : 17. Ribosomes are composed of: (a) rRNA and proteins (b) rRNA and lipids © rRNA and carbohydrates (d) Proteins and lipids
Last Answer : Answer: a rRNA and proteins
Description : In the process of transcription, the flow of genetic information is from (A) DNA to DNA (B) DNA to protein (C) RNA to protein (D) DNA to RNA
Last Answer : Answer : D