Human Biology Exam 1 For Final

50 Questions | Total Attempts: 2075

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Human Biology Exam 1 For Final

This is part of Exam 1.


Questions and Answers
  • 1. 
    One characteristic of lipids is:
    • A. 

      They dissolve well in water.

    • B. 

      They are usually non-polar.

    • C. 

      They usually form hydrogen bonds with each other.

    • D. 

      They contain only carbon and no other element.

  • 2. 
    Which is the unit of life which is made up of cells of one type performing a specific function?
    • A. 

      A cell

    • B. 

      A tissue

    • C. 

      An organ

    • D. 

      An organelle

  • 3. 
    Most of the molecules in cell membranes which form channels or pores are:
    • A. 

      Phospholipids

    • B. 

      Lipids

    • C. 

      Proteins

    • D. 

      Carbohydrates

  • 4. 
    Which of these organelles makes ATP?
    • A. 

      Mitochondria

    • B. 

      Ribosomes

    • C. 

      Golgi Bodies

    • D. 

      Smooth Endoplasmic Reticula

  • 5. 
    Which of the following is a cellular structure with two membranes , the inner of which is folded?
    • A. 

      Ribosomes

    • B. 

      Golgi Bodies

    • C. 

      Mitochondria

    • D. 

      Lysosomes

  • 6. 
    In which of the following is glucose split into two molecules of 3 carbons each?
    • A. 

      Ribosomes

    • B. 

      Glycolysis

    • C. 

      Electron Transport Chain

    • D. 

      Krebs Cycle

  • 7. 
    Water will move into a cell if:
    • A. 

      The membrane is not too thick.

    • B. 

      The cell is not too large.

    • C. 

      Water is of higher concentration outside the cell.

    • D. 

      Water is attached to another molecule such as a phospholipid.

  • 8. 
    The method of movement across a membrane of a molecule from a region of low concentration to a region of high concentration is called:
    • A. 

      Passive transport

    • B. 

      Osmosis

    • C. 

      Facilitated diffusion

    • D. 

      Active transport

  • 9. 
    Which is true of Active Transport?
    • A. 

      Only large molecules are moved across a membrane.

    • B. 

      A portion of the membrane dissolves when active transport occurs.

    • C. 

      It requires a membrane lipid which forms a hole in the membrane.

    • D. 

      It requires energy, usually in the form of ATP.

  • 10. 
    The atomic number and the atomic weight of an element:
    • A. 

      Do not count the weight of electrons.

    • B. 

      Both include the weight of the electrons, but only the atomic number includes the number of neutrons.

    • C. 

      Both include the weight of the protons of the element.

    • D. 

      Are actually the same thing.

  • 11. 
    How many molecules of Carbon dioxide (CO2) are eventually produced from one molecule of glucose?
    • A. 

      0

    • B. 

      2

    • C. 

      4

    • D. 

      6

  • 12. 
    Magnesium has 12 protons. How many electrons are in its second shell?
    • A. 

      4

    • B. 

      8

    • C. 

      12

    • D. 

      16

  • 13. 
    A water molecule is polar due to the presence of:
    • A. 

      An ionic bond.

    • B. 

      Carbon attached to a hydrogen.

    • C. 

      Oxygen.

    • D. 

      Too many electrons in its outer shell.

  • 14. 
    Which of the following atoms has gained a single electron?
    • A. 

      Na+

    • B. 

      Cl-

    • C. 

      An unreacted Na.

    • D. 

      An atom with 10 protons in its nucleus.

  • 15. 
    The bond that forms when a Hydrogen atom attaches to an Oxygen atom is called:
    • A. 

      Sharing of electrons between two hydrogen atoms.

    • B. 

      A non-polar bond.

    • C. 

      A polar bond.

    • D. 

      A hydrogen bond

  • 16. 
    The part of a membrane which forms a middle layer of the two layers of phospholipids is:
    • A. 

      Dissolved in water.

    • B. 

      Made up of proteins.

    • C. 

      Made of the fatty acid tails of the phospholipids.

    • D. 

      Highly polar.

  • 17. 
    In the reaction ADP + Phosphate + Energy ---> ATP, one can say that:
    • A. 

      Energy is created.

    • B. 

      The reaction cannot occur.

    • C. 

      Energy is lost.

    • D. 

      Energy is stored.

  • 18. 
    Which of the following is a polymer of glucose?
    • A. 

      Starch

    • B. 

      Glycogen

    • C. 

      Cellulose

    • D. 

      All of a, b and c are polymers of glucose.

  • 19. 
    A peptide bond forms between ________ when forming a protein.
    • A. 

      Ions

    • B. 

      Water and oxygen

    • C. 

      Two amino acids

    • D. 

      Two glucose molecules

  • 20. 
    Which of the following is produced during the formation of all polymers?
    • A. 

      Water

    • B. 

      Carbon dioxide

    • C. 

      Oxygen

    • D. 

      A 6-carbon molecule

  • 21. 
    Which of the following is evidence of quaternary protein structure?
    • A. 

      Two separate peptides (=proteins) attached together.

    • B. 

      A folding of a protein.

    • C. 

      An unfolded protein.

    • D. 

      A very long protein, unfolded.

  • 22. 
    During cellular respiration, the electrons carried by FADH2 from the Krebs cycle end up:
    • A. 

      In water.

    • B. 

      As part of ATP.

    • C. 

      As part of ADP.

    • D. 

      Being transferred to Carbon dioxide (CO2)

  • 23. 
    Which of the following organelles is actually a small, particle and not a membrane?
    • A. 

      Golgi complex

    • B. 

      A ribosome

    • C. 

      Mitochondrion

    • D. 

      Lysosome

  • 24. 
    The energy which is used by the electron transport chain to produce ATP comes from:
    • A. 

      ADP formed in glycolysis.

    • B. 

      ADP formed in the Krebs cycle.

    • C. 

      Electrons which came from glucose breakdown.

    • D. 

      CO2 (carbon dioxide)

  • 25. 
    Most ATP production in the mitochondrion occurs when ________ through ________.
    • A. 

      H+ ions ; ATP synthase

    • B. 

      Water ; water pores

    • C. 

      Electrons ; ATP synthase

    • D. 

      ADP ; protein complexes of the electron transport chain