Atoms, Molecules, and Body Mass Elements

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Questions and Answers

Which level of human structure is the simplest according to the text?

  • Atoms (correct)
  • Tissue
  • Organelle
  • Cell

What is the major function of the Integumentary system?

  • Synthesize hormones
  • Protects the body from the external environment (correct)
  • Regulate body temperature
  • Assist in digestion

In which fluid compartment does the intracellular fluid (ICF) reside?

  • Intracellular fluid (ICF) (correct)
  • Plasma
  • Interstitial fluid (IF)
  • Extracellular fluid (ECF)

What is the volume of Total body water in an average adult human as mentioned in the text?

<p>40 L (A)</p> Signup and view all the answers

Which of the following is NOT considered a part of the Macroscopic level of human structure?

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

What is the term used for components dissolved in the solvent in a solution?

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

What is the molecular formula for glucose?

<p>C6H12O6 (A)</p> Signup and view all the answers

Which type of chemical reaction involves the breakdown of complex molecules into simpler ones?

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

What is the function of enzymes in chemical reactions?

<p>Increase the rate of reactions (C)</p> Signup and view all the answers

Which of the following is an example of an inorganic molecule?

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

What type of ions have a positive charge?

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

Which statement about pH is correct?

<p>Low hydrogen ion concentration indicates acidity (C)</p> Signup and view all the answers

What is the normal range for plasma pH?

<p>7.35 - 7.45 (B)</p> Signup and view all the answers

Which macromolecule class is responsible for providing long-term energy storage, thermal insulation, and protection from mechanical trauma?

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

Which macromolecule class encodes genes and carries hereditary information?

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

What is the primary function of ATP (Adenosine triphosphate)?

<p>Cellular energy storage and release (D)</p> Signup and view all the answers

Which type of protein is known for its elongated, strand-like structure and stability?

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

What can cause a protein to denature and lose its shape?

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

What can happen if internal conditions are outside the normal range?

<p>Leads to cell malfunction (D)</p> Signup and view all the answers

Which macromolecule class provides easily accessible energy storage in cells?

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

'Cell membranes' are primarily composed of which type of lipid?

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

Which macromolecule class provides structural material for the body?

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

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