Basic Chemistry for Bioscience: Atoms, Elements, and Compounds

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Questions and Answers

What is the smallest particle of a chemical element?

  • Compound
  • Atom (correct)
  • Molecule
  • Mixture

What is the significance of chemistry in the human body?

  • It has no role in the human body
  • It only affects the brain
  • It controls basic processes, such as DNA and protein formation (correct)
  • It only affects the heart

Why is an understanding of chemical concepts important for healthcare professionals?

  • It helps in understanding key A&P concepts and disease processes (correct)
  • It only helps in understanding patient medical history
  • It only helps in understanding patient demographics
  • It is not relevant to healthcare professionals

What is the term for the smallest unit of matter that still retains the properties of an element?

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

What is the relationship between atoms and molecules?

<p>Molecules are formed from atoms (C)</p> Signup and view all the answers

What is the role of chemistry in the development of drugs?

<p>It helps in understanding how drugs interact with proteins on the surface of cells (B)</p> Signup and view all the answers

What is the definition of an atom in Greek?

<p>A- = not, tom = to cut (C)</p> Signup and view all the answers

What is an element?

<p>A pure substance made from only one type of atom (D)</p> Signup and view all the answers

What is the charge of an electron?

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

What is a molecule?

<p>A particle made up of multiple atoms (D)</p> Signup and view all the answers

Which of the following is best described as an element?

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

Which of the following is NOT a type of particle?

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

What is the minimum number of atoms required to form a molecule?

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

What is the definition of an ion?

<p>An atom or molecule that has an electrical charge (C)</p> Signup and view all the answers

What is the fundamental difference between ionic and covalent bonds?

<p>The transfer or sharing of electrons (B)</p> Signup and view all the answers

Which shell of an atom participates in bonding?

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

What is the term for a substance formed from two or more different elements?

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

In a covalent bond, what do the atoms do with their electrons?

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

What is the primary function of enzymes in cells?

<p>To catalyze biochemical reactions (A)</p> Signup and view all the answers

What is the active site of an enzyme?

<p>A small region on the surface of the enzyme involved in catalysis (A)</p> Signup and view all the answers

What is the pH of a neutral solution?

<p>7 (B)</p> Signup and view all the answers

What is the definition of an acid?

<p>A substance that donates protons (B)</p> Signup and view all the answers

What is the range of pH values?

<p>0-14 (C)</p> Signup and view all the answers

What is the role of hydrogen ions in pH?

<p>They decrease the pH of a solution (A)</p> Signup and view all the answers

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