Navigation » List of Schools » East Los Angeles College » Physiology » Physiology 001 – Introduction to Human Physiology » Winter 2021 » Lecture Exam 1 (A)
Below are the questions for the exam with the choices of answers:
Question #1
A TRUE
B FALSE
Question #2
A FALSE
B TRUE
Question #3
A Inhibiting phosphodiesterase activity
B Acting as an agonist on the receptor for epinephrine, a hormone that increases heart contractility
C Increasing the availability of phosphodiesterase molecules
D Decreasing the activity of cAMP-dependent protein kinase
E Increasing the expression of cAMP
Question #4
A Downregulation of insulin receptors
B Decreased expression of the second messenger in the insulin pathway
C Upregulation of insulin receptors
D Increased affinity of insulin for its receptor
E Saturation of the insulin receptor
Question #5
A cAMP
B Enzymes
C Tyrosine residues
D G-protein coupled receptor
Question #6
A TRUE
B FALSE
Question #7
A is an agonist to the enkephalin receptor.
B increases enkephalin in the brain.
C decreases enkephalin in the brain
D increases enkephalin’s affinity for its receptor.
Question #8
A FALSE
B TRUE
Question #9
A FALSE
B TRUE
Question #10
A Cyclic AMP-dependent protein kinase activates two kinds of enzymes.
B Cyclic AMP directly activates enzymes that catabolize glycogen and fat.
C Epinephrine is binding to two types of receptors in the plasma membrane.
D The activated receptor complex stimulates production of two different second messengers.
Question #11
A allows a cell to respond to more different hormones.
B results in the production of more of the first messenger.
C allows small amounts of hormones to produce large responses in target cells.
D takes small molecules and makes polymers out of them.
Question #12
A Diacylglycerol
B Adenylyl cyclase
C ATP
D Epinephrine
E Phospholipase C
Question #13
A TRUE
B FALSE
Question #14
A Epithelial cells lining the small intestine have Na +-K +-ATPase pumps only in their basolateral membranes.
B The plasma membrane of epithelial cells that face the inside of a hollow or fluid-filled chamber in the body is called the basolateral membrane.
C When substances cross epithelial barriers by going through the cell membranes and cytosol, it is called the transcellular pathway.
D The pathway taken by substances that flow between epithelial cells is called the paracellular pathway.
E Epithelial cell membranes express different transport proteins on different cell surfaces.
Question #15
A TRUE
B FALSE
Question #16
A TRUE
B FALSE
Question #17
A false, because the rate of diffusion of nonpolar and polar molecules through the bilayer is essentially the same as long as the molecules are the same size.
B false, because polar molecules diffuse through less rapidly because the bilayer is nonpolar throughout its width.
C false, because nonpolar molecules diffuse through more rapidly because much of the bilayer is nonpolar.
D true.
E false, because polar molecules diffuse through less rapidly because the bilayer is polar throughout its width.
Question #18
A Secondary active transport of molecules would cease
B All transport processes would cease immediately when the ATP was depleted.
C Facilitated diffusion of molecules would cease.
D Primary active transport of molecules would cease.
E Ion concentration gradients would reach equilibrium across the cell membrane.
Question #19
A osmosis.
B facilitated diffusion.
C diffusion.
D apoptosis.
E endocytosis.
Question #20
A FALSE
B TRUE
Question #21
A At equilibrium, X will cease movingacross the cell membrane.
B Solute X will reach equilibrium, but the concentration will be much higher on the inside of the cell because of the smaller volume.
C At equilibrium, movement of X across the membrane will be much faster in one direction than in the other.
D At equilibrium, the netflux of X across the cell membrane is zero.
E Solute X will be unable to reach equilibrium because it is nonpolar.
Question #22
A Its nonpenetrating solute concentration is less than that of a normalcell
B Its penetrating solute concentration is less than that of a normalcell.
C Its nonpenetrating solute concentration is greater than that of a normalcell.
D Its nonpenetrating solute concentration is equal to that of a normalcell.
E Its penetrating solute concentration is greater than that of a normalcell
Question #23
A The reaction is catabolic and the energy content of the products are equal to that of the reactant.
B The reaction is anabolic and the energy content of the reactant is greater than that of the products.
C The reaction is catabolic and the energy content of the products is greater than that of the reactant.
D The reaction is anabolic and the energy content of the products is greater than that of the reactant.
E The reaction is catabolic and the energy content of the reactant is greater than that of the products.
Question #24
A FALSE
B TRUE
Question #25
A The forward direction (toward more carbonic acid accumulation)
B The net rate will be unaffected by an increase in carbonic acid concentration.
C The reverse direction (toward more water and carbon dioxide accumulation)
Question #26
A The temperature of the room needs to increase to increase the rate of reaction.
B The enzyme has become saturated.
C The enzyme molecules are being used up and broken down by the reaction.
D The substrate solution has become contaminated with an allosteric inhibitor.
E Over time, the substrate molecules are denaturing.
Question #27
A TRUE
B FALSE
Question #28
A TRUE
B FALSE
Question #29
A ribosomes
B endosomes
C peroxisomes
D lysosomes
E mitochondria
Question #30
A None of the choices are correct.
B The breakdown of fatty acids to CO 2 and H 2O
C Krebs cycle
D Oxidative phosphorylation
E Glycolysis
Question #31
A TRUE
B FALSE
Question #32
A Synthesis and packaging of proteins for secretion from the cell or export to other organelles
B Generation of ATP
C Synthesis of lipids and intracellular storage of calcium ions
D Digestion of engulfed bacteria and cellular debris
E Transcription of DNA into RNA
Question #33
A TRUE
B FALSE
Question #34
A TRUE
B FALSE
Question #35
A Vitamins
B Gasses
C Free radicals
D Electrolytes
E Isotopes
Question #36
A FALSE
B TRUE
Question #37
A Carbon and oxygen, connected by polar covalent bonds.
B Carbon and hydrogen, connected by hydrogen bonds
C Oxygen and hydrogen, connected by hydrogen bonds
D Carbon and hydrogen, connected by non-polar covalent bonds
E Carbon and hydrogen, connected by ionic bonds
Question #38
A TRUE
B FALSE
Question #39
A FALSE
B TRUE
Question #40
A Sugars that were broken down for energy
B Oxygen and gases used by metabolism
C Ionic forms of mineral elements
D Lipids that form the membranes of cells
E Vitamins
Question #41
A They have different numbers of neutrons.
B They have different number of energy shells
C They have different numbers of electrons.
D They have different numbers of protons.
E They can form different numbers of chemical bonds.
Question #42
A TRUE
B FALSE
Question #43
A FALSE
B TRUE
Question #44
A They are polymers of subunits containing a phosphate group, a sugar, and an amino acid.
B They are polymers of subunits containing glucose, a phosphate group, and an amino acid.
C They are polymers of subunits containing glucose andamino acids.
D They are long polymers of amino acids, folded into an alpha helix.
E They are polymers of subunits containing a phosphate group, a sugar, and a purine or pyrimidine base.
Question #45
A FALSE
B TRUE
Question #46
A Change the set point for sodium
B Leave the amount of sodium unchanged
C Increase the amount of sodium in the blood
D Inhibit the ingestion of more sodium
E Decrease the amount of sodium in the blood
Question #47
A Ventricles of the heart
B Endocrine gland in the gonads
C The adrenal glands
D Photoreceptors of the eye
E Suprachiasmatic nucleus of the brain
Question #48
A FALSE
B TRUE
Question #49
A TRUE
B FALSE
Question #50
A Receptor, afferent pathway, integrating center, efferent pathway, effector
B Effector, afferent pathway, integrating center, efferent pathway, receptor
C Integrating center, receptor, afferent pathway, efferent pathway, effector
D Effector, efferent pathway, integrating center, afferent pathway, receptor
E Receptor, efferent pathway, integrating center, afferent pathway, effector
Question #51
A FALSE
B TRUE
Question #52
A how organisms function.
B the spread of diseases.
C two of the choices are correct.
D the structure of the body.
E how two organisms interact.