QUESTION 9

1. Drugs that aim to lower blood cholesterol work by

   		preventing recycling of bile salts.
   		All the alternatives
   		inhibiting hepatic cholesterol synthesis.
   		inhibiting its intestinal absorption.

2 points   

QUESTION 10

1. For marathoners, the ATP for sustained muscle contraction comesfrom the metabolism of which of the following substrates?

   		proteins and amino acids
   		fatty acids
   		All the alternatives
   		glucose

2 points   

QUESTION 11

1. Which of the following is TRUE about fasted-statemetabolism?

   		it is catabolic
   		All the alternatives
   		leads to the formation of ketone bodies
   		maintains plasma glucose for the brain

2 points   

QUESTION 12

1. Which of the following is NOT true regarding type 2diabetes?

   		incidence is related to poor lifestyle habits
   		accounts for 90% of all diabetes
   		tissues are insulin-resistant
   		is associated with beta cell destruction in the pancreas

2 points   

QUESTION 13

1. Generally, insulin and glucagon are released by opposing stimuliand have opposing effects on metabolism. However, both hormones arereleased by the stimulus of an increase in blood amino acids. Whichanswer below explains why this occurs?

   		Glucagon release is part of a positive feedback loop.
   		Both insulin and glucagon promote amino acid absorption at thesmall intestine.
   		Glucagon prevents hypoglycemia following ingestion of a pureprotein meal.
   		Amino acids are present in the blood during both anabolism andcatabolism.

2 points   

QUESTION 14

1. Individuals with diabetes who need to take insulin usuallyinject insulin rather than taking it as a pill because

   		injecting it means that the insulin reaches most cells beforepassing through the liver first.
   		injecting it helps it to cross the blood-brain barrier.
   		the hormone will be broken down in the digestive system if takenorally.
   		they need insulin to enter their bloodstream more quickly.

2 points   

QUESTION 15

1. The maintenance of plasma glucose concentration within itsnarrow range is achieved through which of the following?

   		glycogenesis
   		glycogenolysis
   		All the alternatives
   		oxidative metabolism

2 points   

QUESTION 16

1. The exocrine portion of the pancreas produces

   		insulin.
   		somatostatin.
   		digestive enzymes
   		glucagon.

2 points   

QUESTION 17

1. During the absorptive state in a person at rest,

   		the liver forms glycogen.
   		skeletal muscles have net glycogen catabolism.
   		gluconeogenesis takes place.
   		adipocytes dump fatty acids into plasma.