Physiology Exam 1: WileyPLUS Questions With 100% Correct Answers 2024

Physiology Exam 1: WileyPLUS Questions With 100% Correct Answers 2024 Pavlov's dog was given food every time a tone sounded. Eventually, the dog increased salivation rates just by hearing the tone, even if food was not given to it. The increase is salivation rates is occurs through a) negative feedback systems b) positive feedback systems c) feedforward controls d) homeostatic imbalances Introductory Assignment Which would be an example of physiology? a) identification of a new bone b) documenting the physical area where a heart is damaged c) tracing the blood vessels used form an organ to the heart d) explaining how a neuron conducts a signal Oxygen levels have decreased during a period of exercise, leading to an increase in respiration rate. In the feedback system that regulates blood gasses, the lungs are acting as the a) receptor b) control center c) stimulus d) effector Feedback systems maintain homeostasis by monitoring and responding to changes in a parameter. The monitored parameter maintained in a homeostatic state is called the a) effector b) receptor c) control center d) controlled variable The body uses the nervous and endocrine systems to regulate homeostatic changes, but the endocrine is much slower. This occurs because a) hormones travel via neurons, which only go to a few places in the body b) hormones travel via blood, and it takes longer for the blood to reach all the cells of the body c) hormones travel via the lungs, so they only real the body during inspiration d) hormones travel as electrical signals and they disappear quickly, so not all signals reach the organs Blood capillaries have anatomical features to increase the transfer between plasma and interstitial fluid to maintain homeostasis. What structural features would you expect would help? a) few capillaries b) great distance between cells and capillaries c) thin walls d) fewer capillaries with thin walls The urinary and respiratory systems rely on the cardiovascular system to circulate the blood with which they exchange wastes and gases. This reliance is an example of a) equilibrium b) emergent properties c) integration d) differentiation Many compounds in our body are regulated to maintain homeostatic levels. Which of the following would NOT be maintained in homeostasis? a) oxygen b) glucose c) temperature d) carbon dioxide e) all of the choices are normally maintained in homeostasis Which of the following situations would most likely have the greatest increase in catabolic reactions compared to anabolic reactions occurring in the body? a) an athlete going through pre-season conditioning b) a person on a hunger strike c) a child going through a rapid growth spurt d) an individual maintaining a healthy eating and exercise plan The relationship between structure and function in the human body is a major theme in physiology. It applies to all organ systems but not to individual cell types. a) true b) false 1.2 Concept Check A group of similar cells that work together to perform a particular function is a/an a) molecule b) tissue c) organ d) organism Refer to Table 1.2. Which body system helps to eliminate solid wastes? a) digestive b) integumentary c) urinary d) lymphatic These are caused by the interactions of simpler components of the lower levels of organization a) organisms b) organ system c) cell differentiations d) emergent properties Chemical Properties of Molecules, Membranes, and Communication A patient's body is not effectively fighting off a bacterial infection. The type of protein that is most likely malfunctioning is a) structural b) regulatory c) immunological d) transport What is the correct arrangement of the phospholipid bilayer (two layers)? a) tails together with polar heads facing out b) heads together with non-polar tails facing out c) polar heads of one layer next to the tails of the next layer d) it depends not he temperature. (At higher temperature, more tails move to the outside layers.) Sucrose is an example of a) a carbohydrate b) a disaccharide c) an organic molecule d) a disaccharide, carbohydrate, and organic molecule These two functional groups are always found on the monomers of a protein. a) carboxyl and amino b) hydroxyl and carbonyl c) sulhydryl and ester d) phosphate and sulfhydryl Buffers play a role in maintaining pH by a) absorbing excess H+ b) releasing additional H+ c) destroying excess H+ d) absorbing or releasing H+ Sweating cools the body because a) the water in the sweat is cooler than the body temperature b) the salts in the sweat utilize the energy in the body heat to dissociate c) *the water in the sweat uses a large amount of body heat to evaporate d) water has a low heat vaporization, which means the water is cooler when it evaporates Fill in the terms to make this sentence correct: When the _____ is dissolved into the _____, it forms a _____. a) solution; solute; solvent b) solute; solvent; solution c) solvent; solution; solute d) solute; solution; solvent How many atoms of oxygen are in a molecule of carbonic acid (H2CO3)? a) 6 b) 1 c) 3 d) 2 Ionization occurs when an atom gains or loses a) electrons b) protons c) neutrons d) protons and neutrons Which of the following properties of a ligand-protein binding is illustrated in the figure? a) specificity b) affinity c) saturation d) competition A chemical released into the blood fails to communicate with its receptor on/in a target organ or cell. You suspect there is an issue with a/an a) neurotransmitter b) local modulator c) hormone d) enzyme What cell junctions prevent the intestines from leaking intestinal contents to the body? a) tight junctions b) adherens junctions c) desmosomes d) hemidesmosomes e) gap junctions Match the parts of the cell with their function plasma membrane <-> selective barrier cytosol <-> fluid portion of the cytoplasm nucleus <-> control center of the cell Large molecules require vesicles for transport into and out of the cell a) true b) false Which of the following statements is correct concerning facilitated diffusion? a) it require an input of energy b) it allows diffusion to proceed against a gradient c) it occurs via a carrier protein d) all of the choices are correct If the solute concentration is greater inside the cell than outside the cell, water will move by osmosis a) into the cell b) out of the ell c) in equal amount into and out of the cell d) toward the lower concentration of solute