Human Physiology Review

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    Mitochondria

    • Produce energy
    • Make proteins
    • Digest cellular components
    • Make carbs
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Human Physiology Quizzes & Trivia
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Human Physiology

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  • 2. 

    Hormones that have opposing actions are

    • Permissive

    • Antagonistic

    • Synergistic

    • Mutualistic

    Correct Answer
    A. Antagonistic
  • 3. 

    The rate of diffusion of a compound depends on

    • The magnitude of the concentration gradient

    • Permeability of the membrane to the compound

    • Surface area of the membrane

    • All of the above

    Correct Answer
    A. All of the above
  • 4. 

    Which of the following affect cardiac output

    • Stroke volume

    • Contraction strength

    • End diastolic volume

    • All of the above

    Correct Answer
    A. All of the above
  • 5. 

    Desensitization (down-regulation)

    • Occurs wen a hormone induces more of its own receptors

    • Results in a greater response of the target cell

    • Occurs after long exposure to high levels of hormones, lowering the response to the hormone

    • Describe the half-life of a hormone

    Correct Answer
    A. Occurs after long exposure to high levels of hormones, lowering the response to the hormone
  • 6. 

    The jelly-like fluid that is secreted by the alveolar cells to counteract the surface tension in the alveoli is called the

    • Macrophage

    • Bicarbonate Ion

    • Surfactant

    • Chlorine

    Correct Answer
    A. Surfactant
  • 7. 

    pH is a measure of

    • Hydroxide ion (OH-) concentration

    • Hydrogen ion (H+) concentration

    • Water concentration

    • Enzyme concentration

    Correct Answer
    A. Hydrogen ion (H+) concentration
  • 8. 

    The opening of the valves in the heart (AV and semilunar) is due mainly to

    • Pressure differences in the heart chambers

    • Heart rate

    • Cardiac output

    • Total peripheral resistance

    Correct Answer
    A. Pressure differences in the heart chambers
  • 9. 

    ______ breaks down proteins, _______ breaks down lipids and _______ breaks down carbs

    • Protease, Lipases, Amylases

    • Amylases, Lipases, Proteases

    • Lipase, Amylase, Proteases

    Correct Answer
    A. Protease, Lipases, Amylases
  • 10. 

    Which of the following is NOT an organelle

    • Lysosome

    • Mitochondria

    • Cytosol

    Correct Answer
    A. Cytosol
  • 11. 

    An ECG measures

    • Heart rate

    • Strength of cardiac muscle contraction

    • Electrical activity of the heart

    • Refractory periods of the heart

    Correct Answer
    A. Electrical activity of the heart
  • 12. 

    The Lymphatic System

    • Transports interstitial fluid back to the blood

    • Transports absorbed fat from the small intestine to the blood

    • Aids in Immune Defense

    • All of the above

    Correct Answer
    A. All of the above
  • 13. 

    Substrates bind to enzymes at the

    • Active site

    • Inhibitive site

    • Inactive site

    Correct Answer
    A. Active site
  • 14. 

    Which of the following is NOT a leukocyte

    • Basophil

    • Red Blood cell

    • Monocyte

    • Lymphocyte

    Correct Answer
    A. Red Blood cell
  • 15. 

    Blood Platelets

    • Cant bind to intact endothelium

    • Release molecules that stimulate vasoconstriction

    • Are part of the platelet plug

    • All of the above

    Correct Answer
    A. All of the above
  • 16. 

    The functional unit of the kidney is the

    • Renal pyramid

    • Renal artery

    • Nephron

    • Glomerulus

    Correct Answer
    A. Nephron
  • 17. 

    Which of the following affect the ease of ventilation (how easily one is able to bring air into and expel air out of the lungs, and how much and how long the air is held in the lungs.)

    • Compliance

    • Elasticity

    • Surface tension

    • All of the above

    Correct Answer
    A. All of the above
  • 18. 

    The pulmonary circulation

    • Is the path of blood from the heart to the body

    • Is the path of blood from the heart to the liver

    • Is the path of blood from the heart to the lungs

    • Is the path of blood from the heart to the kidney

    Correct Answer
    A. Is the path of blood from the heart to the lungs
  • 19. 

    In what order does the filtrate (urine) travel through the nephron tubules

    • Collecting duct, Distal Tubule, Loop of henle, Proximal tubule

    • Proximal tubule, Loop of henle, Distle tubule, Collecting duct

    • Distal tubule, COllecting duct, Loop of henle, Proximal tubule

    • Proximal tubule, distal tubule, collecting duct, loop of henle

    Correct Answer
    A. Proximal tubule, Loop of henle, Distle tubule, Collecting duct
  • 20. 

    The ______ arteriole supples the glomerulus and the _____ arteriole drains the glomerulus

    • Afferent, efferent

    • Efferent, afferent

    Correct Answer
    A. Afferent, efferent
  • 21. 

    The nucleus of an atom contains which of the following

    • Prtons

    • Neutrons

    • Electrons

    • A and b

    • A and c

    Correct Answer
    A. A and b
  • 22. 

    Phospholipids are found in

    • DNA

    • RNA

    • Cell membranes (plasma membrane)

    • Proteins

    Correct Answer
    A. Cell membranes (plasma membrane)
  • 23. 

    Which of the following is TRUE regarding the transport of Oxygen and Carbon Dioxide in the body

    • Veins have more oxygen than arteries

    • Oxygen is bound to copper molecule in the Hemoglobin

    • The binding or release of Oxygen and Carbon Dioxide by Hemoglobin is due to the partial pressures (concentrations) of those gases

    • The partial pressure of oxygen is high in the tissues

    Correct Answer
    A. The binding or release of Oxygen and Carbon Dioxide by Hemoglobin is due to the partial pressures (concentrations) of those gases
  • 24. 

    Aldosterone

    • Acts on the distal tubule and collecting duct

    • Helps regulate Na+/K+ balance

    • Is secreted by the adrenal gland

    • All of the above

    Correct Answer
    A. All of the above
  • 25. 

    Bile aids in te digestion of

    • Lipids

    • Proteins

    • Carbohydrates

    Correct Answer
    A. Lipids
  • 26. 

    Symport

    • Is secondary active transport where a molecule moves in the same direction as Na+

    • Is secondary active transport where a molecule moves in the opposite direction of Na+

    Correct Answer
    A. Is secondary active transport where a molecule moves in the same direction as Na+
  • 27. 

    Acids

    • Donates protons

    • Accepts protons

    Correct Answer
    A. Donates protons
  • 28. 

    The functional unit of skeletal muscle is

    • Myosin

    • Actin

    • Sarcomere

    Correct Answer
    A. Sarcomere
  • 29. 

    Cofactors 

    • Bind to enzymes, changing their conformation, making it harder for substrates to bind

    • Are necessary for some enzymes to be able to bind their substrate properly

    • Have no effect on an enzyme's ability to bind substrates

    Correct Answer
    A. Are necessary for some enzymes to be able to bind their substrate properly
  • 30. 

    G-proteins

    • Are part of 2nd messenger pathways in many cells

    • Contain 3 subunits whose components dissociate when a cell surface receptor is activated

    • Has an alpha subunit that dissociated and can activate an enzyme or open/close an ion channel

    • All of the above

    Correct Answer
    A. All of the above
  • 31. 

    Positive feedback 

    • Amplifies or increases changes in conditions

    • Is more rare than negative feedback

    • Is responsible for continual uterine muscle contractions during labor

    • All of the above

    Correct Answer
    A. All of the above
  • 32. 

    ___________________ is the volume of blood in the ventricles at end of diastole

    • Stroke Volume

    • End-Diastolic Volume

    • End systolic volume

    • Cardiac Output

    Correct Answer
    A. End-Diastolic Volume
  • 33. 

    What is the precursor for all steroid hormones

    • Glucose

    • Amino acids

    • Cholesterol

    Correct Answer
    A. Cholesterol
  • 34. 

    Diffusion is best defined as

    • Active transport of molecules from an area of high concentration to low concentration

    • Passive movement of molecules from an area of low concentration to high concentration

    • Passive movement of molecules from an area of high concentration to low concentration

    • Active transport of molecules from an area of low concentration to high concentration

    Correct Answer
    A. Passive movement of molecules from an area of high concentration to low concentration
  • 35. 

    Enzyme activity (or rate) is affected by which of the following

    • Chlorine concentration

    • Activation energy

    • Substrate concentration

    • Enzyme concentration

    • C and D

    Correct Answer
    A. C and D
  • 36. 

    The plasma membrane of a cell is

    • Not selectively permeable

    • Is formed by a single layer of phospholipid

    • Has very little structural support from proteins.

    • Has a slightly negatively charged surface, which prevents charged molecules from passing directly through the membrane

    Correct Answer
    A. Has a slightly negatively charged surface, which prevents charged molecules from passing directly through the membrane
  • 37. 

    The Pons

    • Has an apnuestic center that promotes inspiration

    • Controls the Medulla

    • A and B

    Correct Answer
    A. A and B
  • 38. 

    A negative feedback loop consists of, in order the following parts

    • Sensor, effector, integrating center

    • Effector, sensor, integrating center

    • Integrating center, sensor, effector

    • Sensor, integrating center, effector

    Correct Answer
    A. Sensor, integrating center, effector
  • 39. 

    _______ blood pressure is low because of a large total cross sectional area over a many branches

    • Artery

    • Vein

    • Capillary

    Correct Answer
    A. Capillary
  • 40. 

    Blood pressure is conrtrolled/regulated by which of the following

    • Kidney

    • Baroreceptors

    • All of the above

    Correct Answer
    A. All of the above
  • 41. 

    Which of the following solutions has the highest osmotic pressure

    • As 1 molar solution of glucose

    • As 2 molar solution of glucose

    • As 3 molar solution of glucose

    • As 4 molar solution of glucose

    Correct Answer
    A. As 4 molar solution of glucose
  • 42. 

    A molecule that binds to the active site of an enzyme, thereby inhibiting its function, is called an

    • Molecular inhibitor

    • Competitive inhibitor

    • Steroid inhibitor

    • Non-competitive inhibitor

    Correct Answer
    A. Competitive inhibitor
  • 43. 

    The backbone of all organic molecules in our body is

    • Oxygen

    • Carbon

    • Nitrogen

    • Calcium

    Correct Answer
    A. Carbon
  • 44. 

    In endocrine cell signaling 

    • Cells secrete chemical regulators that travel through the bloodstream

    • Cells secrete regulatory molecules that diffuse to nearby target cells

    • A neuron sends a neurotransmitter to a neighboring cell via a synapse

    Correct Answer
    A. Cells secrete chemical regulators that travel through the bloodstream
  • 45. 

    The law of mass action states

    • A chemical reaction occurs when there are only reactants present

    • A chemical reaction occurs only when products are present

    • The direction of a reaction is from the side of equation where the concentration is higher to the side where the concentration is lower

    • The direction of a reaction is from the side of equation where the concentration is lower to the side where the concentration is higher

    Correct Answer
    A. The direction of a reaction is from the side of equation where the concentration is higher to the side where the concentration is lower
  • 46. 

    Which is necessary for the production of T4 by the thyroid gland

    • Na+

    • Iodide

    • K+

    Correct Answer
    A. Iodide
  • 47. 

    Osmotic pressure

    • Is the force that would have to be exerted to stop osmosis

    • Indicates how strongly water wants to diffuse

    • Is proportional to solute concentration

    • All of the above

    Correct Answer
    A. All of the above
  • 48. 

    Amino acids are joined together by which type of bond

    • Ionic

    • Covalent

    • Hydrogen

    • Peptide

    Correct Answer
    A. Peptide
  • 49. 

    Which secretes Melatonin

    • Pineal gland

    • Posterior pituitary

    • Anterior pituitary

    • Adrenal medulla

    Correct Answer
    A. Pineal gland

Quiz Review Timeline (Updated): Jan 24, 2013 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jan 24, 2013
    Quiz Edited by
    ProProfs Editorial Team
  • May 03, 2011
    Quiz Created by
    Nadine317

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