Multiple Choice QuestionsIn which diagnostic system, piezoelectric effect and reverse piezoelectric effect are involved?
EEG
CAT
USG
MRI
C.
USG
Piezoelectric Effect is the ability of certain materials to generate an electric charge in response to applied mechanical stress. Also, it can be defined as the conversion of electrical energy to mechanical energy. The inverse piezoelectric effect refers to a deformation of the materials that results from the application of an electric field.
Ultrasound is produced and detected using an ultrasound transducer. Which are capable of sending an ultrasound and then the same transducer can detect the sound and convert it to an electrical signal to be diagnosed. To produce an ultrasound, a piezoelectric crystal has an alternating current applied across it. The piezoelectric crystal grows and shrinks depending on the voltage run through it.
Immunity that develops in the foetus after receiving antibodies from mother's blood through placenta is
naturally acquired active immunity
artificially acquired active immunity
naturally acquired passive immunity
artificially acquired passive immunity
The time interval of appearance of fever in the malarial patients depends on the types of malaria. The research evidences suggest that such time intervals are-(1) 36-48 hours, (2) 48 hours and (3) 72 hours. If any such patient experiences fever at an interval of 48 hours, then the said patient suffers from
only benign tertian malaria
quarantan malaria or mild tertian malaria
malignant tertian malaria or benign tertian malaria
mild tertian malaria or benign tertian malaria
Sand flies play significant role in spreading kala-azar because they
suck blood only from the patients suffering from kala-azar
convert amastigote into promastigote
engulf amastigote at the time of blood sucking from the infected persons
inject promastigote into the body of non-infected persons at the time of blood sucking
Third stage larva of Wuchereria bancrofti carried by Gulex mosquito is called
cysticercus
merozoite
microfilariae
trophozoite
Which one of the following is a causative agent of plague?
Shigella flexner
Bordetella pertussi
Staphylococcus aureus
Yersinia pestis
Antibodies produced by a group of identical B-cells against a single epitope of an antigen is called
polyclonal antibodies
monoclonal antibodies
anti- hapten antibodies
somaclonal antibodies
All of the following symptoms are found in jaundice except
disorders of hepato-biliary system
abnormal secretion of pancreatic and gastric juices
bile duct obstruction
anaemia
Which one of the following combinations acts as a usual antigen binding site of an antibody?
Variable regions of a light and another heavy chain
Variable regions of two light chains
Variable regions of two heavy chains
Variable region of a heavy chain and constant region of a light chain
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