2015 Bio 1 Midterm Exam Review

20 Questions

Settings
Please wait...
2015 Bio 1 Midterm Exam Review

Questions and Answers
  • 1. 
    Scientists use observations and data to form and test ___.
    • A. 

      Constants

    • B. 

      Hypotheses

    • C. 

      Theories

    • D. 

      Conclusions

  • 2. 
    During an experiment, which factors are observed and measured?
    • A. 

      Dependent variables

    • B. 

      Independent variables

    • C. 

      Constants

    • D. 

      Hypotheses

  • 3. 
    What gives water many properties that are important to living things?
    • A. 

      Temperature

    • B. 

      Hydrogen bonds

    • C. 

      Density

    • D. 

      Specific heat

  • 4. 
    The four main types of carbon-based molecules in organisms are carbohydrates, lipids, nucleic acids, and ___.
    • A. 

      Starches

    • B. 

      Fatty acids

    • C. 

      Proteins

    • D. 

      Monosaccharides

  • 5. 
    When graphing experimental results, you should place the ______ onto the y axis.
    • A. 

      Independent variables

    • B. 

      Dependent variables

    • C. 

      Constant

    • D. 

      Bar

  • 6. 
    If an organic molecule model contains carbon atoms arranged in a long chain, it is probably a model of ___.
    • A. 

      Starch

    • B. 

      A lipid

    • C. 

      Polar molecules

    • D. 

      Protein

  • 7. 
    Many factors should remain unchanged during an experiment. These factors are referred to as  ___.
    • A. 

      Levels

    • B. 

      Hypotheses

    • C. 

      Controlled variables

    • D. 

      Independent variables

  • 8. 
    DNA and RNA are two types of ___.
    • A. 

      Proteins

    • B. 

      Carbohydrates

    • C. 

      Lipids

    • D. 

      Nucleic acids

  • 9. 
    The smallest basic unit of matter is the ___.
    • A. 

      Atom

    • B. 

      Cell

    • C. 

      Compound

    • D. 

      Molecule

  • 10. 
    Which of the following is formed when an atom gains or loses electrons?
    • A. 

      Element

    • B. 

      Compound

    • C. 

      Molecule

    • D. 

      Ion

  • 11. 
    Atoms in molecules share pairs of electrons when they make ___.
    • A. 

      Ionic bond

    • B. 

      Covalent bond

    • C. 

      Hydrogen bond

    • D. 

      Polymers

  • 12. 
    Substances are changed into different substances when bonds break and reform during ___.
    • A. 

      Chemical equilibrium.

    • B. 

      Chemical reactions.

    • C. 

      Ion formation.

    • D. 

      Hydrogen bonding.

  • 13. 
    Fats, oils, and cholesterol are all types of ___.
    • A. 

      Hormones.

    • B. 

      Lipids.

    • C. 

      Cell membranes.

    • D. 

      Fatty acids.

  • 14. 
    Protein polymers are made of a series of ___.
    • A. 

      Amino acids

    • B. 

      Monosaccharides

    • C. 

      Histones

    • D. 

      DNA strands

  • 15. 
    The activation energy needed for a chemical reaction is decreased by a ___.
    • A. 

      Catalyst

    • B. 

      Reactant

    • C. 

      Substrate

    • D. 

      Product

  • 16. 
    Which aspect of a chemical reaction is affected by enzymes?
    • A. 

      Direction

    • B. 

      Rate

    • C. 

      Equilibrium

    • D. 

      PH

  • 17. 
    What pH would be considered a strong base?
    • A. 

      2

    • B. 

      6

    • C. 

      8

    • D. 

      12

  • 18. 
    Which of the following molecules found in the food we eat is most commonly broken down to make ATP (providing us with the most readily available energy)?
    • A. 

      Carbohydrates

    • B. 

      Lipids

    • C. 

      Proteins

    • D. 

      Vitamins

  • 19. 
    Which of the following is a major principle upon which cell theory is based?
    • A. 

      All cells form by free-cell formation.

    • B. 

      All cells have DNA.

    • C. 

      All organisms are made of cells.

    • D. 

      All cells are eukaryotic.

  • 20. 
    In the lock-and-key model of enzyme function shown in Figure 2.2, what is happening in step 2? 
    • A. 

      The catalyzed reaction is releasing a product.

    • B. 

      The active sites are restructuring the enzyme.

    • C. 

      The enzyme is causing new bonds to form between the substrates.

    • D. 

      The substrates are beginning to separate from each other.