The crystal of lead zirconate is a key component of
electroencephalography
electrocardiography
magnetoencephalography
sonography
D.
sonography
Sonography is a technique to visualise the structures beneath the skin. A transducer is used to recieve soundwave and signals to the skin. The transducer contains the crystals of lead zirconate that convert electric current into sound waves. It also acts as a reciever and converts the echoes into electrical signals which are processed and displayed on the screen of a monitor to show 2-D image.
Which of the following cannot be detected in a developing foetus by amniocentesis?
Klinefelter's syndrome
Sex of the foetus
Down's syndrome
Jaundice
In a population, unrestricted reproductive capacity is called
biotic potential
fertility
carrying capacity
birth rate
One of the legal methods of birth control is
abortion by taking an appropriate medicine
by abstaining from coitus from day 10-17 of the menstrual cycle
by having coitus at the time of day break
by a premature ejaculation during coitus
Assertion : Amniocentesis is a process of foetal sex determination.
Reason : Metabolic errors and other diseases can be diagnosed prenatally by this process.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Which one of the following pairs is not correctly matched
Streptomyces - Antibiotic
Serratia - Drug addiction
Spirulina - Single cell protein
Rhizobium - Biofertilizer
In assisted reproductive technology where gametes have been fertilized in vitro, which of the following is practicable for embryo transplantation in Fallopian tube
Only embryo up to 8 blastomeres if zygote is not transplanted.
Only zygote is transplanted not embryo
Either embryo or zygote with 8 blastomere phase transplanted
Morulla with 8-24 celled stage is transplanted in Fallopian tube.
Oral contraceptive pill is composed of
oestrogen and progesterone
oestrogen and testosterone
progesterone and testosterone
oestrogen and growth hormone
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with
no spleen
hare-lip
extra fingers and toes
underdeveloped limbs.
Contraceptive oral pills help in birth control by
killing the sperms in uterus
preventing implantation
preventing ovulation
both (b) and (c)
