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TLS Online TPP Program

#Question id: 10547

Which of the following responses are incorrect for closing of stomata?

#Unit 6. System Physiology – Plant
  1. Fusicoccin-induced plasma membrane hyperpolarization in guard cells causes massive K+ uptake and permanent stomatal closing
  2. MAMP flg22 appears to induce partial stomatal closure by inhibiting K+ uptake by guard cells
  3. mutant npq1 fails to show any blue light responses and causes closing of stomata
  4. Abscisic acid regulates seed maturation and stomatal closure in response to water stress
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TLS Online TPP Program

#Question id: 12062

#Unit 7. System Physiology – Animal

Mass movements are often stimulated after a meal by distention of the stomach (gastrocolic reflex) and distention of the duodenum (duodenocolic reflex). Mass movements often lead to which of the following?
TLS Online TPP Program

#Question id: 12211

#Unit 7. System Physiology – Animal

A 57-year-old man is admitted as an emergency for upper GI bleeding. Endoscopy reveals multiple ulcers in the duodenum. Serum gastrin levels are eight-fold higher compared to normal. Zollinger-Ellison syndrome (ZES, gastrinoma) is suspected. Administration of which of the following substances is useful in confirming the diagnosis?
TLS Online TPP Program

#Question id: 12212

#Unit 7. System Physiology – Animal

 A 71-year-old man with upper abdominal pain and blood in the stool takes NSAIDS for the pain and washes it down with whiskey. Pentagastrin administration produced lower than predicted levels of gastric acid secretion. Secretion of which of the following substances is most likely to be diminished in this patient with gastritis?
TLS Online TPP Program

#Question id: 12213

#Unit 7. System Physiology – Animal

The gastric phase of gastric secretion accounts for about 60% of the acid response to a meal. Which of the following can virtually eliminate the secretion of acid during the gastric phase?
TLS Online TPP Program

#Question id: 12214

#Unit 7. System Physiology – Animal

A 53-year-old man with a recurrent history of ulcer disease associated with diarrhea and a strong family history of duodenal ulcer disease is suspected of having Zollinger-Ellison syndrome (gastrinoma). Secretin (2 units/kg) was given as a rapid intravenous injection to test for gastrinoma. Which of the following results would support the existence of gastrinoma following secretin administration?
TLS Online TPP Program

#Question id: 12215

#Unit 7. System Physiology – Animal

Damage to the gastric mucosal barrier is a forerunner of gastric ulcer. Which of the following can both damage the gastric mucosal barrier and stimulate gastric acid secretion?