Navigation » List of Schools » West Los Angeles College » Physiology » Physiology 101 – Introduction to Human Physiology » Fall 2020 » Lecture Exam 1 (A)
Below are the questions for the exam with the choices of answers:
Question #1
A Synthesis of lipids and intracellular storage of calcium ions
B Transcription of DNA into RNA
C Generation of ATP
D Synthesis and packaging of proteins for secretion from the cell or export to other organelles
E Digestion of engulfed bacteria and cellular debris
Question #2
A FALSE
B TRUE
Question #3
A TRUE
B FALSE
Question #4
A Substance X and Substance Y will diffuse at the same rate, as they are of equal size and concentration.
B Substance X will diffuse faster.
C Substance Y will diffuse faster.
Question #5
A TRUE
B FALSE
Question #6
A The term “tonicity” refers to the effect that a solution has on the degree of stretch or shrinking of the cell membrane.
B Hypertonic solutions are always hyperosmotic.
C The term “osmolarity” refers to the osmotic properties of a solution, regardless of its tonicity.
D Hypoosmotic solutions are always hypotonic.
E Isotonic solutions are always isoosmotic.
Question #7
A FALSE
B TRUE
Question #8
A It will stay the same size.
B The result can’t be predicted
C It will shrink in size.
D It will swell in size.
Question #9
A only allow ions to move from the intracellular fluid out of the cell.
B may open in response to binding a ligand.
C are not affected by differences in electrical potential across the membrane.
D only allow ions to move from the extracellular fluid into the cell.
E are nonspecific.
Question #10
A It is a nonpolar molecule.
B It is an amphipathic molecule.
C It is a polar molecule.
Question #11
A Modifying proteins destined for secretion
B Sorting of proteins destined for various locations in the cell
C Packaging enzymes destined for lysosomes
D Addition of carbohydrate groups to proteins
E Transcribing a signal sequence onto proteins destined for secretion
Question #12
A mitochondria
B peroxisomes
C ribosomes
D lysosomes
E endosomes
Question #13
A They have different number of energy shells
B They can form different numbers of chemical bonds.
C They have different numbers of neutrons.
D They have different numbers of protons.
E They have different numbers of electrons.
Question #14
A A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell decrease to 0.5 millimolar.
B A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 5 millimolar.
C A cell is placed into a 1 millimolar solution of substance X and over time you witness the size of the cell swell.
D A cell is placed into a 1 millimolar solution of substance X and over time you witness the size of the cell shrink.
E A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 1 millimolar.
Question #15
A are nonspecific.
B only allow ions to move from the extracellular fluid into the cell.
C may open in response to binding a ligand.
D only allow ions to move from the intracellular fluid out of the cell.
E are not affected by differences in electrical potential across the membrane.
Question #16
A plasma membrane.
B Golgi apparatus.
C nucleus.
D mitochondria.
E endoplasmic reticulum.
Question #17
A TRUE
B FALSE
Question #18
A Pinocytosis
B Phagocytosis
C Active transport
D Hyperosmotic vesicular entrapment
E Hydrosmosis
Question #19
A polypeptide
B polymerase
C peptide
D chemical
Question #20
A TRUE
B FALSE
Question #21
A Ribosomes
B Peroxisomes
C Mitochondria
D Lysosomes
E Endosomes
Question #22
A FALSE
B TRUE
Question #23
A TRUE
B FALSE
Question #24
A FALSE
B TRUE
Question #25
A Secondary
B Tertiary
C Quaternary
D Primary
Question #26
A polypeptide
B polyunsaturated
C polymerase
D polysaturated
Question #27
A 1
B 6
C 2
D 8
E 4
Question #28
A FALSE
B TRUE
Question #29
A TRUE
B FALSE
Question #30
A It is the main mechanism fortransportinghydrophobic molecules across membranes.
B It always involves the movement of substances against a concentration gradient.
C It is always directly coupled to the splitting of ATP molecules.
D There is no limit to how fast it can occur as the concentration gradient becomes larger.
E It involves a specific membrane protein that functions as a carrier molecule.
Question #31
A TRUE
B FALSE
Question #32
A Lipid molecules
B Charged particles
C Water
D Solutes
E Glucose
Question #33
A are catalysts in chemical reactions.
B are broken down during chemical reactions they catalyze.
C have names generally ending in the suffix “-ose.”
D are polymers of ATP that store large amounts of energy.
E can be carbohydrate molecules.
Question #34
A FALSE
B TRUE
Question #35
A refers to any chemical reaction that involves the production of energy.
B is defined as the covalent modification and activationof a protein with binding sites for organic molecules.
C is synonymous with the term “anabolism.”
D refers to the synthesis and breakdown of organic molecules involved in cell structure and function.
E is synonymous with the term “catabolism.”
Question #36
A FALSE
B TRUE
Question #37
A A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 5 millimolar.
B A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell decrease to 0.5 millimolar.
C A cell is placed into a 1 millimolar solution of substance X and over time you witness the concentration of X inside the cell increase to 1 millimolar.
D A cell is placed into a 1 millimolar solution of substance X and over time you witness the size of the cell swell.
E A cell is placed into a 1 millimolar solution of substance X and over time you witness the size of the cell shrink.
Question #38
A FALSE
B TRUE
Question #39
A Manufacturing ribosomes
B Breaking down carbohydrates
C Dividing by mitosis
D Synthesizing lipids
E Making ATP
Question #40
A 100 mM MgCl 2
B 100 mM NaCl
C 400 mM urea
D 300 mM glucose
E 200 mM NaCl
Question #41
A Ion
B Molecule
C Lipophilic
D Atom
E Polar
Question #42
A It has no net electrical charge.
B It is ionized.
C It has opposite electrical charge at each end.
D It is covalent.
Question #43
A Modifying proteins synthesized on free ribosomes and storing calcium ions
B Digestion of engulfed bacteria and using oxygen to generate ATP
C Modifying proteins synthesized on free ribosomes and allowing the distribution of modified proteins throughout the cell in vesicles
D Synthesizing lipids and intracellular storage of calcium ions
E Modifying proteins synthesized on ribosomes associated with granular endoplasmic reticulum and allowing the distribution of modified proteins throughout the cell in vesicles
Question #44
A FALSE
B TRUE
Question #45
A FALSE
B TRUE
Question #46
A TRUE
B FALSE
Question #47
A Peripheral membrane proteins function as channels associated with transport of ions through the membrane.
B The plasma membrane is a layer of phospholipid molecules with their hyrophilic head groups in contact with the extracellular solution and the hydrophobic tail groups in contact with the intracellular solution.
C Some proteins integrated into the membrane serve as channels for the passage of nonpolar molecules through the membrane.
D The phospholipid bilayer is arranged so that the hydrophilic heads of the phospholipid molecule face the extra- and intracellular fluids.
E Cholesterol molecules function to transport ions from one side of the plasma membrane to the other.
Question #48
A TRUE
B FALSE
Question #49
A FALSE
B TRUE
Question #50
A Bonds between two cysteine amino acids
B Van der Waals forces
C Covalent bonds between purine and pyrimidine bases
D Ionic bonds
E Hydrogen bonds
Question #51
A 90
B 1
C 30
D 10
E 0
Question #52
A The breakdown of fatty acids to CO 2 and H 2O
B Glycolysis
C Krebs cycle
D Oxidative phosphorylation
E None of the choices are correct.
Question #53
A TRUE
B FALSE
Question #54
A FALSE
B TRUE
Question #55
A No effect on blood glucose level
B Increase blood glucose level
C Decrease blood glucose level
Question #56
A Storing calcium ions
B Generating ATP
C Providing genetic information
D Storing organic chemicals for metabolism
E Regulating the passage of molecules into and out of the cell
Question #57
A By phosphorylating a reactant
B By acting as one of the reactant molecules
C By increasing the temperature of a solution
D By decreasing the energy of activation
E By increasing the energy content of the product molecules
Question #58
A It helps to determine a cell’s shape.
B It is important for cellular movement.
C It refers to the cellular components of bone.
D It refers to a network of cytoplasmic filaments.
E It includes actin filaments.
Question #59
A Accommodation
B Acclimatization
C Saturation
D Specificity
E Inhibition