The control of gastric acid secretion in response to a meal involves several events that take place over a 4- or 5-hr period following the meal. These events include

(1) a decrease in the pH of the gastric contents,

(2) an increase in the rate of acid secretion,

(3) a decrease in the rate of acid secretion, and

(4) an increase in the pH of the gastric contents. Which of the following best describes

the correct temporal order of events over a 4- or 5-hr period following a meal?

TLS Online TPP Program

#Question id: 12049

#Unit 7. System Physiology – Animal

Which of the following hormones is released by the presence of fat and protein in the small intestine and has a major effect to decrease gastric emptying?

TLS Online TPP Program

#Question id: 2205

#Unit 2. Cellular Organization

Amino acid entry into cells can occur via uniporters or symporters. If the rate of leucine entry into the cell increases when the pH decreases, this suggests:

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#Question id: 19886

#Unit 13. Methods in Biology

Gene cloning refers to the

I) Production of large number of copies of the gene being cloned

II) Production of asexual progeny from a single individual or a cell 

III) Mechanism of intake of DNA fragments from the surrounding medium by a cell

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#Question id: 79

#Unit 1. Molecules and their Interaction Relevant to Biology

The structure of D-arabinose is shown below. How many stereoisomers are possible for this molecule?

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#Question id: 10919

#Unit 6. System Physiology – Plant

Both of these observations—________X__________and________Y__________—support the existence of mass flow in the sieve elements of the phloem.