Human Biology Practice Quiz Test!

72 Questions | Total Attempts: 3103

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Human Biology Practice Quiz Test! - Quiz

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Questions and Answers
  • 1. 
    If the neutrons in a nucleus of an atom are more numerous than the number of protons in the nucleus, then:
    • A. 

      The atom is considered to be an ion.

    • B. 

      The nucleus is not possible.

    • C. 

      The atomic weight will always be the same as the number of electrons in the atom.

    • D. 

      The atom has extra electrons

    • E. 

      None of the above is true.

  • 2. 
    In the human body, the food we eat is ultimately stored in what form of energy?
    • A. 

      ATP

    • B. 

      Carbon Dioxide

    • C. 

      Fructose

    • D. 

      Heat

    • E. 

      Oxygen

  • 3. 
    What is a non-polar molecule?
    • A. 

      The atoms bond by neutrons instead of electrons.

    • B. 

      Only those which contain hydrogen.

    • C. 

      Water.

    • D. 

      The atoms share the electrons equally.

    • E. 

      Ions that become neutral from bonding.

  • 4. 
    Which organelle is the site of most ATP formation in the cell?
    • A. 

      Mitochondrion

    • B. 

      Nucleus

    • C. 

      Ribosomes

    • D. 

      Smooth Endoplasmic Reticulum

    • E. 

      None of the above

  • 5. 
    The name of the process shown here is:
    • A. 

      Active Transport

    • B. 

      Condensation Reactions

    • C. 

      DNA Synthesis

    • D. 

      Facilitated Diffusion

    • E. 

      Osmosis

  • 6. 
    This is found in the membrane and forms ATP.
    • A. 

      ATP Synthase

    • B. 

      Glycolysis of cellular respiration

    • C. 

      Krebs cycle of cellular respiration

    • D. 

      Protein complexes which pass electrons

    • E. 

      None of the above

  • 7. 
    Which of the following is a characteristic of living organisms?
    • A. 

      Living organisms respond to the environment.

    • B. 

      Living organisms are composed of one or more cells.

    • C. 

      Living organisms use energy.

    • D. 

      Living organisms reproduce.

    • E. 

      All of the above are characteristics of living things.

  • 8. 
    Which bond is the weakest?
    • A. 

      Covalent

    • B. 

      Hydrogen

    • C. 

      Ionic

    • D. 

      Peptide

    • E. 

      Both C and D are the least strong (weakest)

  • 9. 
    The last heart chamber to which blood flows before going to the body is the:
    • A. 

      Left atrium

    • B. 

      Left ventricle

    • C. 

      Aorta

    • D. 

      Right ventricle

    • E. 

      Right atrium

  • 10. 
    The ______ causes contractions of the ventricles of the heart.
    • A. 

      Vena cava

    • B. 

      AB Node

    • C. 

      AV Node

    • D. 

      Aorta

    • E. 

      Air pressure in the lungs

  • 11. 
    What is a characteristic of DNA?
    • A. 

      DNA can be replicated.

    • B. 

      DNA contains phosphate (P).

    • C. 

      DNA contains ribose as its sugar.

    • D. 

      A and B are correct, C is incorrect.

    • E. 

      B and C are correct, A is incorrect.

  • 12. 
    After an mRNA molecule has been produced:
    • A. 

      A complementary mRNA copy must be made so that the mRNA has two strands.

    • B. 

      It leaves the nucleus.

    • C. 

      It must be made into a circle by joining the ends.

    • D. 

      It digests a ribosome.

    • E. 

      None of the above is correct.

  • 13. 
    DNA replication occurs during:
    • A. 

      Interphase

    • B. 

      Prophase

    • C. 

      Metaphase

    • D. 

      Anaphase

    • E. 

      Telophase

  • 14. 
    If A is dominant to a, the offspring of the cross AA  x aa will:
    • A. 

      Be homozygous.

    • B. 

      Have the same genotype as the AA parent.

    • C. 

      Have the same genotype as the aa parent.

    • D. 

      Display the same phenotype as the AA parent.

    • E. 

      Display the same phenotype as the aa parent.

  • 15. 
    What is a codon?
    • A. 

      A codon is three amino acids in a row.

    • B. 

      A three amino acid portion of mRNA.

    • C. 

      A three nucleotide base sequence in mRNA which codes for an amino acid.

    • D. 

      The sugar phosphate backbone.

    • E. 

      Three DNA bases which code for a tRNA molecule.

  • 16. 
    Air enters the human lung because of:
    • A. 

      Suction from the lung capillaries.

    • B. 

      Vacuum in the pharynx.

    • C. 

      Blood pressure.

    • D. 

      Squeezing of the trachea.

    • E. 

      Atmospheric air pressure.

  • 17. 
    This causes the membrane potential to rise (depolarize) all along the axon.
    • A. 

      K+

    • B. 

      Na+

    • C. 

      Ca++

    • D. 

      Neurotransmitter chemical

    • E. 

      Na+/K+ pump (Sodium/Potassium pump)

  • 18. 
    This changes shape to move actin.
    • A. 

      Actin

    • B. 

      ADP/ATP

    • C. 

      Myosin

    • D. 

      Tropomyosin

    • E. 

      Troponin

  • 19. 
    Glucose is removed from the nephron and reabsorbed into the blood from the:
    • A. 

      Bowman's capsule.

    • B. 

      Collecting tubule.

    • C. 

      Distal tubule.

    • D. 

      Loop of Henle.

    • E. 

      Proximal tubule.

  • 20. 
    The waste product urea is formed in the:
    • A. 

      Bowman's capsule.

    • B. 

      Collecting tubule.

    • C. 

      Gall bladder.

    • D. 

      Liver.

    • E. 

      Red blood cells.

  • 21. 
    A specific immune response means that:
    • A. 

      Antibodies are produced only by T cells rather than B cells.

    • B. 

      The response is towards a specific antigen.

    • C. 

      Activated B cells are produced but memory B cells are not produced.

    • D. 

      It occurs only during specific times of the day.

    • E. 

      Only specific cuts or wounds are protected.

  • 22. 
    One thing which helps make a vaccination work is:
    • A. 

      A mast cell.

    • B. 

      Platelets.

    • C. 

      Memory B cells.

    • D. 

      A slower response to a specific antigen the second time it invades the body.

    • E. 

      Non-specific defense mechanisms.

  • 23. 
    Cell membrane proteins called Major Histocompatability Complex (MHC) serve to:
    • A. 

      Stimulate release of antibodies from helper T cells.

    • B. 

      Allow the attachment of a muscle to a bone.

    • C. 

      Prevent the backflow of blood in the arteries.

    • D. 

      Slow the clotting of blood to prevent a scar.

    • E. 

      None of the above is correct.

  • 24. 
    Which of the following type of bond is used when a peptide bond is formed?
    • A. 

      Covalent

    • B. 

      Ionic

    • C. 

      Both covalent and ionic bonds.

    • D. 

      Bond formed by removing CO2 (carbon dioxide).

    • E. 

      None of the above is used when a peptide bond is formed.

  • 25. 
    A common characteristic of the formation of polymers is that:
    • A. 

      All types of polymers are made only by plants.

    • B. 

      All types of polymers use peptide bonds.

    • C. 

      All types of polymers are produced using one or more dehydration(=condensation) reactions.

    • D. 

      All types of polymers form CO2 (carbon dioxide) as they form.

    • E. 

      All types of polymers use the same monomers, only arranged in different ways.

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