Biomolecules: Classification and Types
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Questions and Answers

What are the four classes of molecules found in living organisms?

  • Carbohydrates, Lipids, Proteins, and ATP
  • Carbohydrates, Lipids, Proteins, and Vitamins
  • Carbohydrates, Lipids, Proteins, and Hormones
  • Carbohydrates, Lipids, Proteins, and Nucleic Acids (correct)

What is the fourth class of molecules found in living organisms, along with Carbohydrates, Lipids, and Proteins?

  • Nucleic Acids (correct)
  • ATP
  • Hormones
  • Vitamins

Which of the following molecules are not one of the four classes found in living organisms?

  • Proteins
  • Carbohydrates
  • Lipids
  • Vitamins (correct)

What is the class of molecules that includes DNA and RNA?

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

Which of the following is NOT a type of molecule found in living organisms?

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

What is the typical characteristic of most animal fats?

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

What is the typical characteristic of plant fats?

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

What is the typical characteristic of fish fats?

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

What is the name of the animal fat that is commonly used in cooking?

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

What is the general term for fats and oils?

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

What is the result of muscle contraction?

<p>The length of the muscle shortens (B)</p> Signup and view all the answers

What is the shape of epithelial cells?

<p>Polyhedral or rectangular (B)</p> Signup and view all the answers

What is the function of epithelial cells?

<p>To form sheets for protection and absorption (C)</p> Signup and view all the answers

What happens to the muscle cell during muscle contraction?

<p>It becomes shorter (C)</p> Signup and view all the answers

What is the role of epithelial cells in the body?

<p>To protect the body and facilitate absorption (D)</p> Signup and view all the answers

What is the composition of the two membranes enclosing the organelle?

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

What is the characteristic of the outer membrane of the organelle?

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

What are the infoldings of the inner membrane called?

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

How many membranes does the organelle have?

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

What is the function of the cristae in the organelle?

<p>To increase the surface area for cellular respiration (C)</p> Signup and view all the answers

What is the primary purpose of the G1/S checkpoint?

<p>To evaluate the cell's size and environmental conditions (A)</p> Signup and view all the answers

What happens if the environment is favorable at the G1/S checkpoint?

<p>The cell proceeds to the S and M phases (A)</p> Signup and view all the answers

What is evaluated during the G1/S checkpoint?

<p>Growth factors, nutritional state, and cell size (D)</p> Signup and view all the answers

What is the outcome if the cell does not receive a go-head signal at the G1/S checkpoint?

<p>The cell cycle is halted (C)</p> Signup and view all the answers

What is the significance of the G1/S checkpoint in the cell cycle?

<p>It ensures the cell's ability to respond to environmental cues (A)</p> Signup and view all the answers

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