Description : Newly emerging viruses causing human disease can arise from a. Species Jumping. b. Mutations. c. Genetic Recombination. d. All Of The Above (A—C) Are Correct.
Last Answer : d. All Of The Above (A—C) Are Correct.
Description : Which one of the following is NOT considered an emerging infectious disease? a. Polio b. Hantavirus pulmonary disease c. Lyme disease d. AIDS
Last Answer : c. Lyme disease
Description : Factors affecting virulence may include a. The presence of pathogenicity islands. b. Their ability to penetrate the host. c. The infectious dose. d. All the above (a—c) are correct.
Last Answer : d. All the above (a—c) are correct.
Description : Which one of the following statements is NOT correct concerning the reproductive cycle of Chlamydia? a. Reticulate Bodies Are Infectious. b. Reticulate Bodies Reorganize Into Elementary Bodies. c. Elementary Bodies Infect Host Cells. d. Elementary Bodies Transform Into Reticulate Bodies.
Last Answer : a. Reticulate Bodies Are Infectious.
Description : Recombination of virus genomes occurs A- by transduction B- by transcription C- simultaneous infection of a host cell by two viruses with homologous chromosomes D- by transformation
Last Answer : simultaneous infection of a host cell by two viruses with homologous chromosomes
Description : _____ is when an antimicrobial drug should harm the infectious agent but not the host. a. Selective toxicity b. Toxic dose c. Therapeutic dose d. Chemotherapeutic index
Last Answer : a. Selective toxicity
Description : The non-living characteristic of viruses is – (1) ability to multiply only inside the host (2) ability to cause diseases in the host (3) ability to undergo mutation (4) ability to be crystallise
Last Answer : (4) ability to be crystallise Explanation: Viruses are known as a connecting link between non-living and living being.
Description : _____ are infectious RNA particles a. Viroids b. Prions c. Virions d. A-C are correct
Last Answer : a. Viroids
Description : An example of a virus causing cytopathic effects is _____. a. Paraxyxoviruses causeing syncytia b. Infectious mononucleosis with foamy-llking cytoplasm c. Rabies causing Negri bodies d. A-C are correct
Last Answer : d. A-C are correct
Description : .Change in sequence of nucleotide in DNA is called (a) mutagen (b) mutation (c) recombination (d) translation.
Last Answer : b) mutation
Description : Change in sequence of nucleotide in DNA is called (a) mutagen (b) mutation (c) recombination (d) translation.
Last Answer : mutation
Description : A change in genetic constitution, which arises suddenly and not to segregation and recombination of genes in sexual reproduction is called as: a. Hybridization b. Bud variation c. Mutation d. Non of them
Last Answer : Mutation
Description : Antibody diversity results from a. Apoptosis. b. Antigenic shift. c. Somatic recombination. d. Complement binding.
Last Answer : c. Somatic recombination.
Description : Which one of the following is NOT an example of genetic recombination? a. Conjugation b. Binary fission c. Transduction d. Transformation
Last Answer : c. Transduction
Description : Which one of the following is common between prokaryotic and eukaryotic chromosomes? a. Presence or absence of introns. b. Loop or linear chromosomes. c. Genetic recombination occurrence in RNA. d. Mutations occur in the DNA.
Last Answer : d. Mutations occur in the DNA.
Description : Which of the following type of recombination does not require homologous sequences and isutilized by mobile genetic elements that move about chromosomes? A.Mutagenicrecombimation B.Site-specific recombination C.Replicative recombination D.General recombination
Last Answer : C.Replicative recombination
Description : The type of recombination that commonly occurs between a pair of homologous DNA sequences is, A- mutagenic recombination B- site-specific recombination C- replicative recombination D- general recombination
Last Answer : general recombination
Description : Which of the following type of recombination does not require homologous sequences and isimportant for the integration of viral genomes into bacterial chromosomes? A- Mutagenic recombimation B- Site-specific recombination C- Replicative recombination D- General recombination
Last Answer : Site-specific recombination
Description : The transposase gene encodes an enzyme that facilitate A- viral replication within a genome B- general recombination C- site-specific integration of transposable elements D- none of the above
Last Answer : site-specific integration of transposable elements
Description : Which of the following is the cause for drug resistance in tuberculosis? A- Mutation B- Transduction C- Transformation D- Conjugation
Description : An emerging pathogen associated with contaminated water is _____. a. typhoid fever b. cholera c. shigellosis d. Vibrio vulnificus
Last Answer : d. Vibrio vulnificus
Description : Infectious _____ is caused by the ________virus infecting the B lymphocytes. a. mononucleosis, Epstein Barr b. shingles, varicella c. Epstein Barr, yellow fever d. Meningitis, Lassa
Last Answer : d. Meningitis, Lassa
Description : Researchers have associated the ______ virus with infectious mononucleosis and have evidence that the virus also causes _______. a. Epstein-Barr; hepatitis B b. Epstein-Barr; Burkitt's lymphoma c. Coxsackie; hepatitis B d. Coxsackie; Burkitt lymphoma
Last Answer : d. Coxsackie; Burkitt lymphoma
Description : Which one of the following statements about prions is FALSE? a. Prions are infectious proteins. b. Prions have caused disease in Americans. c. Human disease is called variant CJD. d. Prions can be transmitted to humans from infected beef.
Last Answer : d. Prions can be transmitted to humans from infected beef.
Description : What is the most common infectious disease today? a. Respiratory Infections b. Intestinal Infections c. Sexually Transmitted Infections d. Dental Caries
Last Answer : d. Dental Caries
Description : The baking and brewing yeasts a. Belong to the genus Aspergillus. b. Break down glucose and other carbohydrates. c. Induce bread to rise by producing oxygen gas. d. Cause serious diseases in humans.
Last Answer : b. Break down glucose and other carbohydrates.
Description : Organisms that normally inhabit the body a. include Treponema pallidum. b. cause endogenous diseases. c. may be detected by Donovan bodies. d. resist the effects of antibiotics.
Last Answer : b. cause endogenous diseases.
Description : One of the reasons Koch was able to show the cause of disease was that he could grow them a. in a pure culture b. in an animal host c. in a tissue culture d. in chicken eggs
Last Answer : a. in a pure culture
Description : 2.In which way has the study of biology helped us to control infectious diseases? -Science
Last Answer : The science that makes a study of diseases is called pathology, though in a broad sense it includes diagnostic, prophylactic and curative measures too. Pathology is a study of diseases of all ... controlling the pathogen. In this way the study of biology helped us to control infectious diseases.
Description : 1.What are the various public health measures, which you would suggest as safeguard against infectious diseases? -Science
Last Answer : The various public health measures against infectious diseases includes the following - 1.Education - People should be educated about the infectious diseases so that they may protect themselves ... The breeding places of vectors should be destroyed & adult vectors killed by appropriate methods.
Description : We can prevent infectious diseases by covering our face with our hands or using handkerchief during sneezing and coughing. Why is it better to use the back of the hand or the fold of the elbow than the palm of the hand ?
Last Answer : We can prevent infectious diseases by covering our face with our hands or using handkerchiefs during sneezing and coughing. In this case, it is better to use the back of the hand or the fold of the ... diseases during sneezing and coughing as the back of the hand or elbow is less used during work.
Description : What are the Infectious diseases?
Last Answer : some of them are: cold; flu; Hiv/Aids; diarrhea; measles;hpatitus; coughs; tuberculosis; tetnus; chicken pox; fevers, coldsores; rubella; rabies; meningitus.
Description : What are infectious and parasitic diseases generally caused by?
Last Answer : Feel Free to Answer
Description : The isoenzymes LDH5 is elevated in (A) Myocardial infarction (B) Peptic ulcer (C) Liver disease (D) Infectious diseases
Last Answer : Answer : C
Description : Name some Infectious diseases ?
Last Answer : Some of the Infectious diseases are Malaria, meningitis, trypanosomiasis, hepatitis etc…
Description : Coagulopathies are the method of analysis blood which analyse the __________ a. Parasitology b. Immuno-detection c. Clotting disorder d. Infectious diseases
Last Answer : c. Clotting disorder
Description : Match the lab with the correct set of identified diseases. a. Pasteur: tetanus and tuberculosis b. Koch: anthrax and rabies c. Koch: cholera and tuberculosis d. Pasteur: diphtheria and typhoid
Last Answer : c. Koch: cholera and tuberculosis
Description : A bacterial cell that is transformed _____. a. Cannot Form A Conjugation Pilus. b. Has Undergone A Frameshift Mutation. c. Has Acquired Dna From The Environment. d. Will Probably Die Within 24 Hours.
Last Answer : c. Has Acquired Dna From The Environment.
Description : A heritable change in DNA is called a ______. a. mistake b. mutation c. gene d. pathogen
Last Answer : b. mutation
Description : Penicillin resistance in staphylococci is acquired due to A.conjugation B.mutation C.transformation D.transduction
Last Answer : D.transduction
Description : Penicillin resistance in staphylococci is acquired due to A- conjugation B- mutation C- transformation D- transduction
Last Answer : transduction
Description : The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.
Last Answer : d. All Of The Above (A—C) Are Correct
Description : Two linked genes a and b show 20% recombination. the individuals of a dihybrid cross between ++/++ × ab/ab shall show gametes (a) ++ : 80 : : ab : 20 (b) ++ : 50 : : ab : 50 (c) ++ : 40 : : ab : 40 : : + a : 10 : : + b : 10 (d) ++ : 30 : : ab : 30 : : + a : 20 : : + b : 20.
Last Answer : (c) ++ : 40 : : ab : 40 : : + a : 10 : : + b : 10
Description : Which of the following statements is not true of two genes that show 50% recombination frequency? (a) The gene show independent assortment. (b) If the genes are present on the same chromo- some, they ... every meiosis. (c) The genes may be on different chromosomes. (d) The genes are tightly linked.
Last Answer : (b) If the genes are present on the same chromo- some, they undergo more than one cross-overs in every meiosis.
Description : During the process of lysogeny _____. a. Phage DNA Integrates Into The Bacterial Chromosome. b. A Bacterium Acquires DNA From The External Environment. c. Competent Cells Receive Plasmids. d. New Phage Particles Are Assembled In The Host Bacterium.
Last Answer : a. Phage DNA Integrates Into The Bacterial Chromosome.
Description : Abnormalities in chromosome number give rise to diseases of karyotype. How might these aberrations occur?
Last Answer : Under usual conditions of meiotic division, each tetrad separates into its constituent homologous chromosomes. One homologue migrates to one pole and the other homologue to the opposite pole during ... and internal inversion of chromosomes or chromosome parts may also produce diseases of karyotype.
Description : Antibiotics will not work against _____ diseases because they lack the structures and metabolic machinery with which antibiotics interfere. a. viral b. bacterial c. fungal d. protozoan
Last Answer : a. viral
Description : The imidazole drugs are of value for treating a. Viral diseases. b. Protozoal diseases and bacterial diseases. c. Bacterial diseases. d. Fungal diseases.
Last Answer : d. Fungal diseases
Description : ______ follow streptococcal diseases and appear to be consequences of immune complex formation in the kidneys or heart. a. Scarlet fever b. Yellow fever c. Rheumatic fever d. Necrotizing fasciatis
Last Answer : c. Rheumatic fever