Animal Physiology Quizzes Module 1
Animals release energy from food by converting elements in the food to different elements. a. True b. False
False
Animals release energy from food by warming the food. a. True b. False
False
Jellyfish are animals. True or False?
True
An antagonist to a receptor decreases the number of messengers bound to the receptor. a. True b. False
a. True
Which of these is not a major pathway by which ATP is consumed/used? a. Synthesizing protein from amino acids b. Breaking down glycogen to glucose c. Transporting sodium out of a cell, from a low to high concentration d. Contraction of heart muscle
b. Breaking down glycogen to glucose
A high-affinity receptor does not saturate. a. True b. False
b. False
Polar, water-soluble hormones usually affect cells by binding to intracellular receptors. a. True b. False
b. False
Which of the following can cross a biological membrane by simple diffusion? a. Glucose b. Fatty acid c. Amino acid d. Protein
b. Fatty acid
Which of the following statements is TRUE? a. As the concentration of CO2 increases inside the cell, the transport out of the cell, across the cell membrane, reaches a maximal plateau. b. Polar vitamins can cross the cell by potocytosis. c. Glucose crosses the cell membrane via a channel. d. Secondary active transport proteins bind and hydrolyze ATP.
b. Polar vitamins can cross the cell by potocytosis.
Choose the statement that is TRUE. a. The Krebs cycle produces most of the ATP when glucose is catabolized. b. The Krebs cycle is inhibited if the cell lacks oxygen. c. The oxygen in the CO2 produced by the Krebs cycle comes from atmospheric oxygen that binds to the carbons derived from glucose during the Krebs cycle. d. a and b are correct. e. a, b, and c are correct.
b. The Krebs cycle is inhibited if the cell lacks oxygen.
Which of the following is NOT a defining characteristic of animals? a. Possession of mitochondria b. Heterotrophic c. Possession of fur d. Develop from embryonic germ layers e. Reproduce sexually
c. Possession of fur
Lipid-soluble chemical signals usually _______. a. bind to receptors in the plasma membrane b. cause phosphorylation of a cytoplasmic enzyme c. bind to nuclear receptors d. activate janus kinases
c. bind to nuclear receptors
Cystic fibrosis ___. a. is a defect of a K+ channel b. causes lungs to enlarge c. reduces water and ion flow across membranes in many parts of the body d. is caused by smoking
c. reduces water and ion flow across membranes in many parts of the body
Proteins ________________. a. form most structures in an animal b. function as most enzymes in an animal c. form most membranes in an animal d. A and B are correct e. A, B, and C are correct
d. A and B are correct
Regulation of protein concentration can occur by ________________. a. alteration of the transcription of the gene coding for that protein b. removal of the RNA coding for that protein c. allosteric modulation of that protein's activity d. A and B are correct e. A, B, and C are correct
d. A and B are correct
Choose the TRUE statement. a. Catabolizing fat produces ammonia. b. Fatty acids are catabolized via glycolysis. c. During starvation, most energy will be from catabolizing glucose. d. All of the CO2 produced during fat catabolism is produced by the Kreb's cycle.
d. All of the CO2 produced during fat catabolism is produced by the Kreb's cycle.
Choose the solution with the lowest water concentration. a. Glucose 20 mM, urea 30 mM, NaCl 150 mM, CaCl2 10 mM b. Glucose 10 mM, urea 100 mM, NaCl 10 mM, CaCl2 50 mM c. Glucose 100 mM, urea 200 mM, NaCl 20 mM, CaCl2 20 mM d. Glucose 30 mM, urea 10 mM, NaCl 60 mM, CaCl2 100 mM
d. Glucose 30 mM, urea 10 mM, NaCl 60 mM, CaCl2 100 mM
Which of the following solutions will cause cells to shrink? a. NaCl 150 mM, urea 100 mM b. NaCl 100 mM c. NaCl 100 mM, urea 50 mM d. NaCl 200 mM
d. NaCl 200 mM
Which of the following processes exhibit saturation (transport rate plateaus at high concentration)? a. Simple diffusion b. Facilitated diffusion c. Ion channel d. Secondary active transport
d. Secondary active transport
A large increase in exercise (say hiking for 20 miles a day for a week) requires _______________. a. an increase in oxygen delivery to the muscles b. an increase in nutrient delivery to the muscles c. an increase in ATP levels in the muscles d. a and b are correct e. a, b, and c are correct
d. a and b are correct
Activation of a receptor tyrosine kinase will lead to _____. a. phosphorylation of a cytoplasmic protein b. changes in conformation and/or activity of cytoplasmic proteins c. production of nitric oxide d. a and b are correct e. a, b and c are correct
d. a and b are correct
Relative to ectotherms like fish, endotherms like mammals have ______. a. higher rates of Na+ and K+ leak across their cellular membranes b. higher concentrations and activities of the Na+/K+ATPases in their cellular membranes. c. lower rates of oxygen consumption per gram d. a and b are correct e. a, b and c are correct
d. a and b are correct
Which of the following is a required input for glycolysis? a. Glucose b. NAD c. Oxygen d. a and b are correct e. a, b, and c are correct
d. a and b are correct
As the human body maintains its body temperature in a hot environment, _______________. a. temperature receptors in the body detect an elevation of body temperature and signal the brain b. neurons in the integratory center in the brain check to see if the body temperature is above the setpoint c. effectors signal sweat glands to produce sweat, and evaporation causes an increase in heat loss, stabilizing body temperature d. A and B are correct e. A, B, and C are correct
e. A, B, and C are correct
Regulation of the rate of an enzyme-mediated metabolic pathway can be affected by _________________. a. covalent modification of the enzyme b. allosteric modification of the enzyme c. concentration of the substrate d. A and B are correct e. A, B, and C are correct
e. A, B, and C are correct
Which of the following statements is TRUE? a. Ion channels are primarily composed of fatty acids. b. Usually both sodium and potassium can move through the same ion channel. c. Membranes are usually slightly positively charged on the inside. d. The electrical gradient in most cells tends to push K+ out of the cell, through open channels. e. Channel gating can be regulated by the membrane potential.
e. Channel gating can be regulated by the membrane potential.
Activated G protein-coupled receptors can ____________. a. bind GTP b. open an ion channel c. raise cytosolic calcium d. a and b are correct e. a, b and c are correct
e. a, b and c are correct
