Human Biology Exam 1 For Final

50 Questions | Total Attempts: 1907

SettingsSettingsSettings
Please wait...
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

  • 26. 
    When carbon reacts, it usually:
    • A. 

      Forms only polar bonds.

    • B. 

      Has gained electrons from another atom.

    • C. 

      Has lost electrons to another atom.

    • D. 

      Shares electrons with other atoms.

  • 27. 
    Three of the four answers listed below are actually members of the same tissue type. Select the exception.
    • A. 

      Blood

    • B. 

      Epithelium

    • C. 

      Bone

    • D. 

      Cartilage

  • 28. 
    The correct operational sequence of the three processes listed below is:
    • A. 

      Glycolysis >> Krebs cycle >> electron transport

    • B. 

      Electron transport >> Krebs cycle >> glycolysis

    • C. 

      Krebs cycle >> glycolysis >> electron transport

    • D. 

      Glycolysis >> electron transport >> Krebs cycle

  • 29. 
    During cellular respiration, electron energy is necessary to:
    • A. 

      Actively transport H+ ions in order to allow ATP formation.

    • B. 

      Cause dehydration reactions (= condensation reactions).

    • C. 

      Move water across the electron transport chain.

    • D. 

      Remove phosphate from ADP.

  • 30. 
    Which of the following would have already accepted 2 electrons?
    • A. 

      NAD+

    • B. 

      NADH

    • C. 

      CO2

    • D. 

      ADP

  • 31. 
    When one has reached the end of glycolysis, one can say that:
    • A. 

      The final molecule has 5 carbons.

    • B. 

      Glucose has been formed.

    • C. 

      ATP has been used.

    • D. 

      CO2 has been released.

  • 32. 
    In order to remove electrons which have completed their journey through the electron transport chain, they will be moved to:
    • A. 

      FAD

    • B. 

      ATP

    • C. 

      Oxygen

    • D. 

      NAD+

  • 33. 
    Which two particles are always equal in number in an unreacted atom?
    • A. 

      Electrons and protons

    • B. 

      Electrons and neutrons

    • C. 

      Protons and neutrons

    • D. 

      None of the above answers are correct.

  • 34. 
    Which of the following will have equal but opposite charges?
    • A. 

      Protons and neutrons

    • B. 

      Protons and electrons

    • C. 

      Electrons and neutrons

    • D. 

      Neutrons and ions

  • 35. 
    In which of the following would one produce a molecule which contains only 5 carbons?
    • A. 

      Glycolysis

    • B. 

      ATP synthase

    • C. 

      The preparatory reaction just before entering the Krebs cycle.

    • D. 

      Krebs cycle

  • 36. 
    The monomers involved in this are called simple sugars.
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Polysaccharides

    • D. 

      All of the above.

  • 37. 
    Which of the following has monomers which are put together by dehydration reactions?
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Polysaccharides

    • D. 

      All of the above.

  • 38. 
    Which of the following has monomers which are put together in ribosomes?
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Polysaccharides

    • D. 

      All of the above.

  • 39. 
    Which of the following form or make up all membranes?
    • A. 

      Proteins

    • B. 

      Lipids

    • C. 

      Polysaccharides

    • D. 

      All of the above.

  • 40. 
    A cell membrane is considered to be a bilayer (two-layered) because it is made up of:
    • A. 

      Two layers of protein on either side of a layer of water.

    • B. 

      Two layers of proteins.

    • C. 

      Two layers of phospholipids.

    • D. 

      Two layers of cholesterol, a lipid.

  • 41. 
    The Krebs cycle starts and ends with:
    • A. 

      Glucose

    • B. 

      Pyruvate

    • C. 

      A 4-carbon molecule

    • D. 

      ATP

  • 42. 
    List the biological levels in order of size and complexity:
    • A. 

      Protein, organ, cell, tissue, species, population, ecosystem

    • B. 

      Protein, cell, organelle, organ, organism, population, ecosystem

    • C. 

      Atom, protein, tissue, organelle, species, population, ecosystem

    • D. 

      Atom, molecule, cell, tissue, organ, population, ecosystem

  • 43. 
    What is the ultimate source of energy for humans?
    • A. 

      Plants

    • B. 

      ATP

    • C. 

      Sunlight

    • D. 

      Protein

  • 44. 
    Which of the following determines what element an atom is?
    • A. 

      Protons

    • B. 

      Neutrons

    • C. 

      Electrons

    • D. 

      Neurons

  • 45. 
    If you were a cholesterol molecule, with which of the following would you interact with most easily?
    • A. 

      DNA

    • B. 

      Glucose

    • C. 

      Phospholipids

    • D. 

      Amino acids

  • 46. 
    Which tissues can be found in the heart?
    • A. 

      Cardiac muscles

    • B. 

      Nervous tissues

    • C. 

      Connective tissues

    • D. 

      All of the above are found in the heart.

  • 47. 
    The type of cells shown in the illustration below are from:
    • A. 

      Blood

    • B. 

      Striated muscle

    • C. 

      Smooth muscle

    • D. 

      Nerve

  • 48. 
    In the following diagram, which numbered arrow points to the most polar region?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 49. 
    In the diagram below, which portion would interact with water most easily?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 50. 
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4