Related InterviewSolutions

• [A] : In mammals, ends of presynaptic fibres are enlarged to form synaptic Knobs which are separated by a synaptic cleft from postsynaptic neurons. Each synaptic knob contains many mitochondria and small gran- ule-Iike synaptic vesicles filled with minute packets of the chemical that transmits im- pulses to postsynaptic neurons. [R]: The chemical transmitters are called neurohumors which proportionate to `K^+` in- flux.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A] : Upon stimulation of a muscle cell, cal- cium ions `(Ca^(++))` are released from the sar- coplasmic reticulum. [R]: In reacting with a protein complex, `Ca^(++)` unmasks myosin binding sites on the ac-tin filaments.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A]: in mammalian heart there is a very swift conduction of stimulation all over the body. [R]: Conduction of stimulation is caused by Purkinje fibres and Bundle of HisA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A] : Deamination occurs by transaminase enzyme in kidney. [R]: Removal of COOH group from an amino acid is used in the production of urea.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A]: A tadpole whose thyroid gland has been removed does not metamorphose into adult [R]: calcitonin and thyroxine are produced from thyroid gland, these hormones stimu- late protein synthesis for the development and growth of tadpole larva.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A]: Taste buds are called the sense organs for olfaction [R]: Taste buds bear olfactory receptor cells which get stimulated by certain chemical substancesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A] : Testes are attached to abdominal wall by a ligament and under testosterone influence, it is drawn into scrotum. [R]: Leydig cells secrete androgens like test- osterone.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A]: The tadpoles become giant tadpoles when fed on thiourea. [R]: Thiourea is an antithyroid substanceA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A]: Pinna of ear is quite elastic and pliable. [R]: Pinna Qf ear is made up of spongy bone.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
• [A]: Osteoporosis is a bone disorder that re- sults from the loss of calcium and phosphate from the bone matrix. [R]: In osteoporosis, osteoblast activity is de- creased and new bone is deposited more slowly than it is removed by osteoclasts.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false