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Given below are two statements: Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chances of fractures. Reason (R): Common cause of osteoporosis is increased levels of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below:
Persons with 'AB' blood group are called as "Universal recipients". This is due to:
Which one of the following is correct?
If the nucleus $^{27}_{13}\mathrm{Al}$ has a nuclear radius of about 3.6 fermis, then $^{125}_{52}\mathrm{Te}$ would have its radius approximately as:
Medical Termination of Pregnancy (MTP) is considered safe up to how many weeks of pregnancy?
Match List-I with List-II: List-I (a) Ammonotelism (b) Uricotelism (c) Micturition (d) ADH List-II (i) Birds (ii) Water reabsorption (iii) Bony fish (iv) Urinary bladder
Which of the following statements are correct regarding skeletal muscle? A: Muscle bundles are held together by collagenous connective tissue layer called fascicle. B: Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. C: Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. D: M line is considered as functional unit of contraction called sarcomere. Choose the most appropriate answer from the options given below:
Three types of muscles are given as a, b and c. Identify the correct matching pair along with their location in human body:
During muscular contraction, which of the following events occur? (a) 'H' zone disappears (b) 'A' band widens (c) 'I' band reduces in width (d) Myosin hydrolyzes ATP, releasing the ADP and Pi (e) Z-lines attached to actins are pulled inwards
Select the correct statement regarding the mechanism of muscle contraction.
Which of the following structures or regions is incorrectly paired with its function?
Match List-I with List-II: List-I A. Vertebrochondral Ribs B. Floating Ribs C. Scapula D. Coxal Bone List-II I. Ilium, Ischium, Pubis II. 8th, 9th and 10th pairs of ribs III. Acromion IV. 11th and 12th pairs of ribs
Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?
A certain road accident patient with an unknown blood group needs an immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
Given below are two statements: Statement I: The cerebral hemispheres are connected by nerve tract known as corpus callosum. Statement II: The brain stem consists of the medulla oblongata, pons and cerebrum. In the light of the above statements, choose the most appropriate answer from the options given below:
If $n_1, n_2$ and $n_3$ are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency $n$ of the string is given by
Which of the following is a correct match for disease and its symptoms?
Arrange the following formed elements in the decreasing order of their abundance in blood in humans: (a) Platelets (b) Neutrophils (c) Erythrocytes (d) Eosinophils (e) Monocytes
Match List-I with List-II: List-I A. Pons B. Hypothalamus C. Medulla D. Cerebellum List-II I. Provides additional space for neurons, regulates posture and balance II. Controls respiration and gastric secretions III. Connects different regions of the brain IV. Neurosecretory cells
Two non-mixing liquids of densities $\rho$ and $n\rho$ ($n>1$) are put in a container. The height of each liquid is $h$. A solid cylinder floats with its axis vertical and length $L$. The length of the cylinder inside the denser liquid is $pL$ ($p<1$). The density of the cylinder is $d$. The density $d$ is equal to: