Practise Questions Flashcards
The parasympathetic nervous system (including the vagus nerve) influences
digestion by:
a) Decreasing gastrointestinal flow
b) Stimulating peristalsis and secretory activity
c) Constricting sphincters
d) Inhibiting enzyme activity
b) Stimulating peristalsis and secretory activity
Which of the following statements about the TCA cycle is NOT true?
a) It does not occur in red blood cells
b) It is amphibolic (both a degradative and a synthetic pathway)
c) It operates under aerobic and anaerobic conditions
d) It occurs in the mitochondrial matrix
c) It operates under aerobic and anaerobic conditions
Ischiocavernosus muscle:
a) Forms the crura of the penis
b) Forms the bulb of the penis
c) Is absent in the body of the penis
d) Prevents the spongy urethra from collapsing
c) Is absent in the body of the penis
In liver disease, portal hypertension may result in all the following features
EXCEPT:
a) Oesophageal varices
b) Fluid accumulation in the peritoneal cavity (ascites)
c) Enlargement of the spleen
d) Abnormalities of blood coagulation
d) Abnormalities of blood coagulation
Which of the following plasma glucose levels is diagnostic of diabetes mellitus?
a) Fasting plasma glucose <7mmol/L
b) Random plasma glucose <11.1mmol/ L
c) Fasting plasma glucose ≥7mmol/L
d) 2-hour plasma glucose <11.1mmol/L
d) 2-hour plasma glucose <11.1mmol/L
The right gastric artery is a branch of the:
a) Splenic artery
b) Gastroduodenal artery
c) Common hepatic artery
d) Coeliac trunk
c) Common hepatic artery
The TCA cycle takes place in which part of eukaryotic cells?
a) Nucleus
b) Inner mitochondrial membrane
c) Inner cell membrane
d) Cytosol
b) Inner mitochondrial membrane
Which of the following statements is true about glycolysis?
a) It functions rapidly when ATP is abundant
b) Molecular oxygen is required
c) It generates energy from sugars and fat
d) Its rate is controlled by allosteric regulation
d) Its rate is controlled by allosteric regulation
Which of the following is a steroid?
a) Adrenaline
b) Insulin
c) ACTH
d) Oestrogen
d) Oestrogen
Which of the following is a metabolite suitable for excretion following drug
metabolism?
a) a glucuronide
b) a glutathione
c) a cytochrome
d) a dehydrogenase
a) a glucuronide
Which of the following structures mark the posterolateral osseofibrous
boundaries of the perineum:
a) Ischiopubic rami
b) Inguinal ligaments
c) Ischial tuberosities
d) Sacrotuberous ligaments
d) Sacrotuberous ligaments
Which of the following is CORRECT regarding Helicobacter pylori?
a) Helicobacter pylori is a common cause of food poisoning
b) Helicobacter pylori is rarely eradicated by a combination of proton pump
inhibitor and antibiotics
c) Up to 80% of population is infected by Helicobacter pylori
d) Helicobacter pylori is a Gram positive bacteria
c) Up to 80% of population is infected by Helicobacter pylori
Which of the following statements IS true?
a) Brain cannot derive any energy without glucose
b) Brain can derive 30% of its energy from ketone bodies
c) Brain can derive 70% of its energy from ketone bodies
d) Ketone bodies cannot cross the blood brain barrier
c) Brain can derive 70% of its energy from ketone bodies
In the TCA cycle energy-rich molecules are produced from the oxidation of
acetyl CoA are:
a) NAD+, FAD and ATP
b) NAD+, FAD and GTP
c) NADH, FADH2
d) NADH, FADH2, ATP and GTP
d) NADH, FADH2, ATP and GTP
Which of the following would NOT be linked to a cell surface receptor?
a) An ion channel
b) A trimeric G-protein
c) A DNA binding protein
d) Enzymatic activity
c) A DNA binding protein
