Description : The experimental proof for semiconservative replication of DNA was first shown in a (1) Fungus (2) Bacterium (3) Plant (4) Virus
Last Answer : (2) Bacterium
Description : The unequivocal proof of DNA as the genetic material came from the studies on a (a) bacterium (b) fungus (c) viroid (d) bacterial virus.
Last Answer : (c) viroid
Description : Semi-conservative replication of DNA was first demonstrated in (a) Escherichia coli (b) Streptococcus pneumoniae (c) Salmonella typhimurium (d) Drosophila melanogaster.
Last Answer : (c) Salmonella typhimurium
Description : Why is DNA replication called a semi-conservative method ?
Last Answer : In the DNA replication method , the hydrogen bonds between the two DNA strands are broken off and each strand creates a new strand to complement it. Later an old formula and a new formula ... new DNA molecules are formed by the combination of an old maternal molecule and a newly created molecule.
Description : Replication of DNA is (A) Conservative (B) Semi-conservative (C) Non-conservative (D) None of these
Last Answer : Answer : B
Description : DNA replication is (a) conservative and discontinuous (b) semi-conservative and semi-discontinuous (c) semi-conservative and discontinuous (d) conservative.
Last Answer : (a) conservative and discontinuous
Description : Method of DNA replication in which two strands of DNA separate and synthesise new strands is called (a) dispersive (b) conservative (c) semi-conservative (d) non conservative
Last Answer : (a) dispersive
Description : Why is replication semi-conservative?
Last Answer : Feel Free to Answer
Description : The antibiotic penicillin is obtained from which of the following? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells
Last Answer : (3) fungus Explanation: Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
Description : Polio is caused by - (1) Bacterium (2) Fungus (3) Virus (4) Insect
Last Answer : (3) Virus Explanation: Poliomyelitis , often called polio or infantile paralysis, is an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.
Description : What causes mumps? A. Fungus B. Bacterium C. Deficiency of vitamins D. Virus (Answer)
Last Answer : D. Virus (Answer)
Description : The antibiotic penicillin is obtained from which of the following ? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells
Last Answer : fungus
Description : Polio is caused by (1) Bacterium (2) Fungus (3) Virus (4) Insect
Last Answer : Virus
Description : Experimental material in the study of DNA replication has been (a) Escherichia coli (b) Neurospora crassa (c) Pneumococcus (d) Drosophila melanogaster.
Last Answer : Pneumococcus
Description : Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium
Last Answer : Ans:(a)
Description : The antibiotic Ampicillin is - (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug
Last Answer : (2) obtained from a bacterium Explanation: Ampicillin is an antibiotic made from bacteria. Belonging to the penicillin group of beta-lactam antibiotics, ampicillin is able to penetrate Gram-positive ... group. That amino group helps the drug penetrate the outer membrane of gram-negative bacteria.
Description : The antibiotic Ampicillin is : (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug
Last Answer : obtained from a bacterium
Description : Difference between conservative and semiconservative replication? -Biology
Last Answer : answer:
Description : Which one of the following statements is true? a. Plasmids are circular molecules of RNA. b. RNA replicates by a conservative method of replication. c. Deletions or insertions of a ... reading frameshift during translation. d. Okazaki fragments are removed from a RNA before translation occurs.
Last Answer : c. Deletions or insertions of a nucleotide in a gene will cause a reading frameshift during translation.
Description : Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) ... completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs
Last Answer : (d) Palindromic sequence of base pairs
Description : Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen
Last Answer : (4) lichen Explanation: Litmus is a water-soluble mixture of different dyes extracted from lichens, especially Roccellatinctoria. It is often absorbed onto filter paper to produce one of the ... litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly
Description : Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen
Last Answer : lichen
Description : The principle of making use of greater homogeneity in groups of experimental units reduce the experimental error is (A) Local control (B) Experiment (C) Replication (D) Experiment Error
Last Answer : (A) Local control
Description : Research that is done to understand an event from the past is known as _____? a. Experimental Research b. Historical Research c. Replication d. Archival Research
Last Answer : b. Historical Research
Description : The process not needed in experimental research is: (A) Observation (B) Manipulation and replication (C) Controlling (D) Reference collection
Last Answer : D
Description : The experimental study is based on: (A) The manipulation of variables (B) Conceptual parameters (C) Replication of research (D) Survey of literature
Last Answer : (A) The manipulation of variables
Description : Who gave experimental proof that hydrogen, methane, water and ammoia gave rise to amino acidss :
Last Answer : Who gave experimental proof that hydrogen, methane, water and ammoia gave rise to amino acidss : A. ... Miller B. Charles Darwin C. Lamarck D. Oparin
Description : What is the difference between a virus and a bacterium?
Last Answer : A: A virus is smaller and can only reproduce inside a living host, while a bacterium can reproduce on its own.
Last Answer : A: A virus is an infectious agent that consists of genetic material surrounded by a protein coat and requires a host cell to replicate, while a bacterium is a single-celled organism that can exist and reproduce independently.
Last Answer : A: A virus is a non-living particle that requires a host cell to reproduce, while a bacterium is a single-celled organism that can reproduce on its own. Bacteria are also much larger than viruses and have a more complex cellular structure.
Last Answer : A: A virus is a non-living, infectious particle that requires a host cell to replicate, while a bacterium is a living microorganism that can replicate on its own and can cause infection or disease.
Last Answer : A: A virus is a non-living particle that requires a host cell to replicate, while a bacterium is a living, single-celled organism.
Description : A virus infecting a bacterium is -Science
Last Answer : A VIRUS INFECTING A BACTERIUM IS CALLED BACTERIOPHAGES; OR PHAGES.
Description : The necrotic ring spot disease of stone fruits (cherry, peach, plum, etc.) is caused by (a) a bacterium (b) fungal infection (c) molybdenum deficiency (d) virus
Last Answer : Ans:(d)
Description : The smallest living cell is that of a (a) bacterium (b) bread mold (c) mycoplasma (d) virus
Last Answer : Ans:(c)
Description : The virus that infects a bacterium is (a) Arbovirus (b) Viremia (c) Bacteriophage (d) Baclofen
Description : Typhoid fever is caused by – (1) Bacterium (3) Fungi (2) Protozoa (4) Virus
Last Answer : (1) Bacterium
Description : 'ELISA' test is employed to diagnose - (1) Polio virus (2) AIDS antibodies (3) Tuberculosis bacterium (4) Cancer
Last Answer : (3) Tuberculosis bacterium Explanation: ELISA is an abbreviation for "enzymelinked immunosorbent assay." An ELISA test uses components of the immune system and chemicals to detect immune responses In the body (for example, to infectious microbes).
Description : Read the following four statements (A-D). (A) Colostrum is recommended for the new born because it is rich in antigens. (B) Chikungunya is caused by a Gram negative bacterium. (C) Tissue culture has proved useful ... . How many of the above statements are wrong? (a) Two (b) Three (c) Four (d) One
Last Answer : (B) Chikungunya is caused by a Gram negative bacterium.
Description : Common cold is not cured by antibiotics because it is (a) caused by a virus (b) caused by a Gram-positive bacterium (c) caused by a Gram-negative bacterium (d) not an infectious disease.
Last Answer : (b) caused by a Gram-positive bacterium
Description : Common cold differs from pneumonia in that (a) pneumonia is a communicable disease whereas the common cold is a nutritional deficiency disease (b) pneumonia can be prevented by a live attenuated ... infects alveoli whereas the common cold affects nose and respiratory passage but not the lungs.
Last Answer : (d) pneumonia pathogen infects alveoli whereas the common cold affects nose and respiratory passage but not the lungs.
Description : Which among the following are Malicious Softwares: a) Virus and Worms b) Trojan Horse and Time Bomb c) Logic Bomb and Rabbit and Bacterium d) None of These e) All of the Above
Last Answer : e) All of the Above
Description : Typhoid fever is caused by (1) Bacterium (2) Protozoa (3) Fungi (4) Virus
Last Answer : Bacterium
Description : ‘ELISA’ test is employed to diagnose : (1) Polio virus (2) AIDS antibodies (3) Tuberculosis bacterium (4) Cancer
Last Answer : Tuberculosis bacterium
Description : During the first 10 minutes after injection of phage DNA, no phage can be recovered by disrupting the infected bacterium. This is termed as A- eclipse period B- rise period C- latent period D- burst size
Last Answer : eclipse period
Description : In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (i-iv) in this regard and select the correct option about which one or more of these ... ii) and (iv) (b) (i) only (c) (i) and (iii) (d) (ii) and (iv)
Last Answer : (d) (ii) and (iv)
Description : The hereditary material present in the bacterium E.coli is (a) single-stranded DNA (b) double-stranded DNA (c) DNA (d) RNA.
Last Answer : (b) double-stranded DNA
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