The hormone that inhibits gastric secretion and motility is:
A. Gastric inhibitory peptide (GIP)
B. Secretin
C. Gastrin
D. Cholecystokinin
Answer: Option A
Solution (By JKSSB Mock Tests)
GIP (glucose-dependent insulinotropic peptide), released by the small intestine, inhibits gastric acid secretion and motility, and stimulates insulin release. Gastrin stimulates acid secretion, secretin stimulates bicarbonate, CCK stimulates gall bladder contraction. GIP was originally named for its gastric inhibitory effect.
Consider statements about diseases: 1. Cholera is caused by a bacterium. 2. AIDS is caused by a retrovirus. 3. Dengue is transmitted by Culex mosquito. Which are correct?
Explanation:
Cholera is a severe diarrheal disease caused by the bacterium Vibrio cholerae. AIDS is caused by the Human Immunodeficiency Virus (HIV), which is a retrovirus. Dengue fever is transmitted by the bite of an infected female Aedes aegypti mosquito, not Culex (which transmits filariasis and Japanese encephalitis). Thus, statements 1 and 2 are correct.
Explanation:
The right ventricle pumps deoxygenated blood through the pulmonary artery to the lungs for oxygenation. The pulmonary artery is the only artery carrying deoxygenated blood. Pulmonary veins carry oxygenated blood from lungs to the left atrium. The left atrium receives oxygenated blood, not deoxygenated. The right atrium receives deoxygenated blood from the body. Thus, C is correct.
Explanation:
The leavening (rising) of bread dough is caused by the anaerobic respiration (fermentation) of the yeast Saccharomyces cerevisiae (baker's yeast). The yeast ferments the sugars in the dough, producing carbon dioxide (CO2) gas and ethanol. The CO2 gas gets trapped in the dough, causing it to expand and rise, giving bread its light and fluffy texture.
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