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5 Written questions

5 Matching questions

  1. Describe two ways that atoms may combine with other atoms.
  2. What is likely to happen to a protein molecule exposed to intense heat or radiation?
  3. A hydrophilic molecule dissolved in....
  4. How does the number of protons in a water molecule compare with the number of electrons?
  5. What are the functions of DNA and RNA?
  1. a Two atoms of hydrogen can combine with one atom of oxygen to produce a molecule of the compound water.
    Atoms of the same element combine, they produce molecules of that element.
  2. b Water
  3. c DNA: molecules store the information for protein synthesis.
    RNA: molecules use this information to construct specific protein molecules.
  4. d The number of protons equals the number of electrons.
  5. e All proteins have a special shape and their shape determines what function they will perform. Proteins can become denatured or their shape can change and it'll cause the loss of function. Proteins exposed to heat will most likely become denatured and lose the ability to perform their task.

5 Multiple choice questions

  1. Atoms that have the same atomic number but different atomic weight.
  2. The solution at pH 6.4 has 100 times the hydrogen ion concentration of a solution at pH 8.42.
  3. Atoms whose outermost electron shells are filled already have stable structures and are chemically inactive.
  4. Energy or atomic fragments they emit.
  5. Each electron shell can hold a limited # of electrons. The maximum number of electrons that each of the 1st three shells can hold for elements of atomic number 18 and under is ...1st shell ( close to the nucleus) 2 e-, second shell 8 e-, third shell 8 e-. More complex atoms may have as many as 18 e- in the 3rd shell.

5 True/False questions

  1. Identify the 4 levels of protein structure.Synthesis: when 2 or more atoms, ions, or molecules bond to form a more complex structure A+B->AB
    Decomposition: bonds of a reactant molecule break to form simpler molecules, atoms, or ions AB->A+B
    Exchange: parts of 2 different types of molecular trade positions as bonds are broken and new are formed AB + CD-> AD+ BC
    Reversible: product or products can change back to reactant or reactants A+B<-> AB

          

  2. What is biochemistry?Chemistry of living organisms, a field of life science.

          

  3. What is the relationship between matter and elements?DNA: molecules store the information for protein synthesis.
    RNA: molecules use this information to construct specific protein molecules.

          

  4. Describe 4 types of chemical reactions.Synthesis: when 2 or more atoms, ions, or molecules bond to form a more complex structure A+B->AB
    Decomposition: bonds of a reactant molecule break to form simpler molecules, atoms, or ions AB->A+B
    Exchange: parts of 2 different types of molecular trade positions as bonds are broken and new are formed AB + CD-> AD+ BC
    Reversible: product or products can change back to reactant or reactants A+B<-> AB

          

  5. Which elements are most common in the human body?DNA: molecules store the information for protein synthesis.
    RNA: molecules use this information to construct specific protein molecules.