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Hormones secreted by the gastrointestinal tract are all categorized as:
The NCERT states, 'Endocrine cells present in different parts of the gastro-intestinal tract secrete four major peptide hormones, namely gastrin, secretin, cholecystokinin (CCK) and gastric inhibitory peptide (GIP).'
Which of the following statements about Atrial Natriuretic Factor (ANF) is INCORRECT?
The NCERT states, 'ANF is secreted which causes dilation of the blood vessels. This reduces the blood pressure.' Therefore, increasing blood pressure is incorrect.
Match the hormone with its primary site of action:
The NCERT clearly states: 'Gastrin acts on the gastric glands...', 'Secretin acts on the exocrine pancreas...', and 'CCK acts on both pancreas and gall bladder...'. GIP inhibits gastric secretion and motility, not kidney.
Which of these is a non-endocrine tissue that secretes a hormone involved in reducing blood pressure?
The NCERT highlights that hormones are secreted by tissues that are not endocrine glands, specifically mentioning 'the atrial wall of our heart secretes a very important peptide hormone called atrial natriuretic factor (ANF), which decreases blood pressure.'
In the context of the renin-angiotensin mechanism, what is the direct role of angiotensin II that ultimately affects blood pressure and GFR?
The NCERT states, 'Angiotensin II also activates the adrenal cortex to release Aldosterone. Aldosterone causes reabsorption of Na+ and water from the distal parts of the tubule. This also leads to an increase in blood pressure and GFR.'
Which of the following describes the primary advantage of alternating current (AC) over direct current (DC) for electrical energy transmission and distribution?
The NCERT text states: 'The main reason for preferring use of ac voltage over dc voltage is that ac voltages can be easily and efficiently converted from one voltage to the other by means of transformers.'
In an AC circuit containing a resistor, what is the nature of electric energy dissipation?
The NCERT text mentions: 'Joule heating is given by $i^2R$ and depends on $i^2$ (which is always positive whether i is positive or negative) and not on i. Thus, there is Joule heating and dissipation of electrical energy when an ac current passes through a resistor.'
The RMS value of current ($I_{rms}$) in an AC circuit is defined such that it:
The NCERT text states: 'Joule heating is such a property, and there is one ampere of rms value of alternating current in a circuit if the current produces the same average heating effect as one ampere of dc current would produce under the same conditions.'
If the household line voltage is specified as 220 V, what does this value typically represent?
The NCERT text highlights, 'It is customary to measure and specify rms values for ac quantities. For example, the household line voltage of 220 V is an rms value...'
For a sinusoidal AC voltage $v = v_m \sin(\omega t)$, the RMS voltage ($V$) is given by:
According to the NCERT text, 'V = $v_m / \sqrt{2}$ = 0.707 $v_m$ (7.8)'.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.