Recent questions in Biology

1. The distal convoluted tubules of many nephrons open into a straight tube called collecting duct, many of which converge and open into the renal pelvis through renal columns. 2. The Malpighian corpuscle, proximal convoluted tubule and distal convoluted tubule of the nephron are situated in the cortical region of the kidney whereas the loop of Henle dips into the medulla. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Which of the following is not true regarding anatomy of kidney?

asked Apr 3, 2014 by pady_1

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Which of the following is not true regarding ammonotelic, ureotelic and uricotelic organisms?

asked Apr 3, 2014 by pady_1

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Regarding excretion of waste products by organs other than kidney - choose the correct option :

asked Apr 3, 2014 by pady_1

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1. Renal calculi are Stone or insoluble mass of crystallised salts (oxalates, etc.) formed within the kidney. 2. Glomerulonephritis is Inflammation of glomeruli of kidney. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding Platelets / Thrombocytes - choose the correct option :

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Regarding White Blood Cells / Leukocytes - choose the incorrect option :

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Regarding White Blood Cells / Leukocytes - choose the incorrect option :

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Regarding Red Blood Cells / Erythrocytes - choose the correct option :

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Regarding plasma - choose the incorrect option :

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Regarding Rh incompatibility and erythroblastosis foetalis - choose the incorrect option :

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Regarding Lymphatic system - Choose the incorrect option :

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Regarding Cardiac output - Choose the incorrect option :

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1. The heart beats 72 times per minute 2. The duration of a cardiac cycle is 0.08 seconds. Regarding 1 and 2 :

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During ventricular diastole which is least likely to happen :/ Choose the incorrect option :

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During cardiac cycle :

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Regarding Nodal musculature of Heart - choose the incorrect statement :

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Regarding Heart - choose the incorrect statement :

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Incorrect statement about double circulation :

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True about incomplete double circulation :

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Single circulation : 1. In fishes the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts 2. From body parts deoxygenated blood is returned to the heart.

asked Apr 3, 2014 by pady_1

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1. Each peak in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart. 2. The number of QRS complexes that occur in a given time period can seldom correlate with heart beat rate of an individual. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Heart Failure: 1. Heart failure means the state of heart when it is not pumping blood effectively enough to meet the needs of the body. 2. It is sometimes called congestive heart failure because congestion of the lungs is one of the main symptoms of this disease. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Coronary Artery Disease (CAD): 1. Coronary Artery Disease, often referred to as atherosclerosis, affects the vessels that supply blood to the heart muscle. 2. It is caused by deposits of calcium, fat, cholesterol and fibrous tissues, which makes the lumen of arteries narrower. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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1. Repeated activation of the muscles can lead to the accumulation of pyruvic acid due to anaerobic breakdown of glycogen in them, causing fatigue. 2. Muscle contains a red coloured oxygen storing pigment called myoglobin Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding Pectoral girdle - choose the incorrect answer :

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Regarding Pelvic girdle - choose the incorrect answer :

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Regarding ribs and rib cage - choose the correct answer :

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Regarding vertebral column - choose the correct answer :

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Axial skeleton comprises bones distributed along the main axis of the body. The and ____ constitute axial skeleton.

asked Apr 3, 2014 by pady_1

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1. Myosin and actin are arranged as rod-like structures, parallel to each other and also to the transverse axis of the myofibrils. 2. Actin filaments are thinner as compared to the myosin filaments, hence are commonly called thin and thick filaments respectively. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding Skeletal system movement -choose the incorrect statement :

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About _ per cent of the body weight of a human adult is contributed by muscles. They have special properties like ________________________ .

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Muscle is a specialised tissue of origin.

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Regarding Amoeboid movement -choose the incorrect statement :

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In cartilaginous joints, the bones involved are joined together with _________ . The joint between _ is of this pattern and it ___________ .

asked Apr 3, 2014 by pady_1

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Regarding Fibrous joints - choose the correct answer :

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1. Joints are points of contact between bones, or between bones and cartilages. 2. Force generated by the muscles is used to carry out movement through joints, where the joint acts as a fulcrum. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding thyroid gland - choose the incorrect option :

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Regarding thyroid gland - choose the incorrect option :

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Regarding pineal gland - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Assertion (A) : Vasopressin is called as anti-diuretic hormone (ADH). Reason (R) : Vasopressin acts mainly at the kidney and stimulates resorption of water and electrolytes by the distal tubules and thereby reduces loss of water through urine. Regarding (A) and (R) :

asked Apr 3, 2014 by pady_1

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1. In males, LH stimulates the synthesis and secretion of hormones called androgens from testis. 2. In males, FSH and androgens regulate spermatogenesis. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding hormones of adenohypophysis - choose the incorrect option :

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Regarding pituitary hormonal action in female - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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1. Over-secretion of GH in adults, stimulates abnormal growth of the body leading to gigantism 2. Low secretion of GH results in stunted growth resulting in pituitary dwarfism. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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1. Neurohypophysis stores and releases two hormones called oxytocin and vasopressin. 2. Oxytocin and vasopressin are synthesised by the hypothalamus and are transported via portal circulation to neurohypophysis. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding pituitary gland - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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1. Hypothalamic hormone called GHRH stimulates the pituitary synthesis and release of gonadotrophins. 2. Somatostatin from the hypothalamus inhibits the release of gonadotrophins from the pituitary. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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1. Several other non-endocrine tissues secrete hormones called growth factors. 2. Growth factors are essential for the normal growth of tissues and their repairing/regeneration Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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