Carbohydrates Basics

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Questions and Answers

What is the primary function of carbohydrates in the human body?

  • To regulate body temperature
  • To supply energy to the body (correct)
  • To synthesize proteins
  • To provide structural support to cells

What is the name of the smallest carbohydrate, which is a triose?

  • Glycogen
  • Fructose
  • Glucose
  • Glyceraldehyde (correct)

Where are carbohydrates primarily stored in the body?

  • In the heart
  • In the liver and muscle (correct)
  • In the brain
  • In the kidneys

What is the predominant form of sugars found in humans?

<p>D-form (D)</p> Signup and view all the answers

What is the general formula for carbohydrates?

<p>Cx(H2O)y (A)</p> Signup and view all the answers

What is the term for a carbohydrate with a terminal carbonyl group?

<p>Aldose (C)</p> Signup and view all the answers

What is the functional group present in carbohydrates?

<p>C=O (A)</p> Signup and view all the answers

What is the number of carbon atoms in a pentose?

<p>5 (C)</p> Signup and view all the answers

What is the term for a carbohydrate with three carbon atoms?

<p>Triose (B)</p> Signup and view all the answers

Which carbohydrate has six carbon atoms?

<p>Hexose (B)</p> Signup and view all the answers

What is the name of the carbohydrate with the fewest carbon atoms?

<p>Glyceraldehyde (A)</p> Signup and view all the answers

How many carbon atoms are present in a tetrose?

<p>4 (B)</p> Signup and view all the answers

What is the process by which glucose molecules are converted to pyruvate or lactate for energy production?

<p>Glycolysis (A)</p> Signup and view all the answers

Which process involves the formation of glucose-6-phosphate from non-carbohydrate sources?

<p>Gluconeogenesis (C)</p> Signup and view all the answers

What is the breakdown of glycogen to glucose for use as energy called?

<p>Glycogenolysis (B)</p> Signup and view all the answers

What is the conversion of glucose to glycogen for storage called?

<p>Glycogenesis (C)</p> Signup and view all the answers

What is the decomposition of fat called?

<p>Lipolysis (B)</p> Signup and view all the answers

What is the byproduct of glucose conversion in the presence of insulin via the EMP pathway?

<p>CO2 and H2O (A)</p> Signup and view all the answers

What is the product of glycolysis in the EMP pathway?

<p>2 moles of pyruvate (A)</p> Signup and view all the answers

What is the process of synthesizing glucose from amino acids, glycerol, lactate, and pyruvate called?

<p>Gluconeogenesis (B)</p> Signup and view all the answers

What is the process of converting glycogen to glucose in the liver called?

<p>Glycogenolysis (B)</p> Signup and view all the answers

What is the process of converting excess glycogen into fat called?

<p>Lipogenesis (C)</p> Signup and view all the answers

What is the breakdown of triglycerides with the formation of ketone bodies called?

<p>Lipolysis (C)</p> Signup and view all the answers

What is the primary function of insulin in the body?

<p>To regulate glucose metabolism (D)</p> Signup and view all the answers

What is the result of high sugar levels in the blood?

<p>Hyperglycemia (C)</p> Signup and view all the answers

Which hormone is responsible for increasing plasma glucose?

<p>Glucagon (A)</p> Signup and view all the answers

What happens to glucose when it is absorbed by the small intestine?

<p>It is used by the cells to derive energy (D)</p> Signup and view all the answers

Which part of the pancreas produces insulin?

<p>The middle portion (C)</p> Signup and view all the answers

What is the function of epinephrine in response to stress?

<p>To increase plasma glucose (B)</p> Signup and view all the answers

Where are the chromatin cells that secrete epinephrine located?

<p>Adrenal medulla (C)</p> Signup and view all the answers

What triggers the release of epinephrine?

<p>Physical and emotional stress (A)</p> Signup and view all the answers

What is the location of the adrenal glands?

<p>At the top of the kidneys (A)</p> Signup and view all the answers

What is the classification of epinephrine?

<p>Hormone (D)</p> Signup and view all the answers

Where is cortisol produced in the body?

<p>Adrenal cortex (A)</p> Signup and view all the answers

What is the process by which cortisol provides the body with glucose during stressful conditions?

<p>Gluconeogenesis (C)</p> Signup and view all the answers

Which type of cells in the zona fasciculata release cortisol?

<p>Spongiocytes (A)</p> Signup and view all the answers

What is the source of glucose that cortisol taps into during stressful conditions?

<p>Protein stores (B)</p> Signup and view all the answers

In which organ does cortisol stimulate the process of gluconeogenesis?

<p>Liver (A)</p> Signup and view all the answers

What gland is responsible for secreting growth hormone?

<p>Anterior pituitary gland (D)</p> Signup and view all the answers

What is the resulting hormone when three iodine atoms are bound to thyroglobulin?

<p>Triiodothyronine (A)</p> Signup and view all the answers

What is the effect of somatostatin on plasma glucose levels?

<p>Increases plasma glucose levels (B)</p> Signup and view all the answers

Where are the D-cells located in the pancreas?

<p>Between the location of A-cells and B-cells (D)</p> Signup and view all the answers

What is the precursor molecule that is iodinated to form thyroxine?

<p>Tyrosine (B)</p> Signup and view all the answers

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