Exploring Lipids and Proteins
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Questions and Answers

Which organ combines ammonia with carbon dioxide to form urea?

  • Kidneys
  • Liver (correct)
  • Heart
  • Lungs

What is the shape of DNA?

  • Triple helix
  • Single helix
  • Double helix (correct)
  • Spiral helix

What are the building blocks of DNA/RNA called?

  • Lipids
  • Monosaccharides
  • Nucleotides (correct)
  • Amino acids

What is the function of enzymes?

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

Which process breaks down fats into glycerol and fatty acid chains?

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

What happens to excess ketones produced during fat metabolism?

<p>They cause keto-acidosis (A)</p> Signup and view all the answers

When are amino acids converted into energy?

<p>When there are too many proteins and carbohydrates and fats are not available (A)</p> Signup and view all the answers

Which process breaks down fats into glycerol and fatty acid chains?

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

What is the result of too many ketones in the body?

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

When are amino acids converted into energy?

<p>When carbohydrates and fats are not available (A)</p> Signup and view all the answers

Which organ handles fat metabolism with hydrolysis?

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

What is the function of the Kreb cycle?

<p>To convert substances into ATP (C)</p> Signup and view all the answers

What is the result of too many ketones in the body?

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

What is the primary function of proteins in the body?

<p>To maintain cellular structures (C)</p> Signup and view all the answers

What happens to excess ketones produced during fat metabolism?

<p>They are excreted in urine (D)</p> Signup and view all the answers

What is the primary function of amino acids in the body?

<p>To maintain cellular structures (A)</p> Signup and view all the answers

Which process removes the nitrogen group called ammonia from amino acids?

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

Which molecule is formed when the liver combines ammonia with carbon dioxide?

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

What is the function of DNA polymerase during DNA synthesis?

<p>It binds the separated base pairings together (D)</p> Signup and view all the answers

Which of the following is NOT an organic base found in DNA?

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

What is the role of enzymes in cell metabolism?

<p>They regulate cell metabolism (C)</p> Signup and view all the answers

Which of the following is NOT a classification of enzymes based on their function?

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

What is the active site of an enzyme?

<p>A wall that fits a shaped object (substrate) (A)</p> Signup and view all the answers

What happens during enzyme inhibition?

<p>The active site of the enzyme is distorted and cannot fit the substrate (C)</p> Signup and view all the answers

What is the function of hydrolases?

<p>To add water to a molecule without splitting it (B)</p> Signup and view all the answers

What is the role of cofactors in enzyme activity?

<p>They are substances essential for enzyme activity (D)</p> Signup and view all the answers

Which factors can affect enzyme activity?

<p>Temperature, hydrogen ion concentration, cofactors (A)</p> Signup and view all the answers

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