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assignment set 1
Physio- chapters 1 through 7
| Question | Answer |
|---|---|
| Shivering to try to raise the body temperature back to normal would be an example of: a. the body trying to maintain homeostasis b. a positive- feedback mechanism c. a negative- feedback mechanism | both A and C- the body trying to maintain homeostasis and a negative feedback mechanism |
| intracellular parasites that consist of DNA and RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called: a. viruses b. bacteria c. fungi d. protozoa | a. viruses |
| The body's thermostat is located in the: a. heart b. cerebellum c. pituitary d. hypothalamus | d. hypothalamus |
| which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease? a. virus b. bacteria c. prion d. protozan | c. prion |
| If the secretion of oxytocin during childbirth operated as a negative- feedback control loop, what affect would it have on uterine contractions? a. oxytocin would stimulate stronger uterine contractions b. oxytocin would inhibit uterine contractions | oxytocin would inhibit uterine contraction |
| intrinsic control: | is sometimes called auto regulation |
| the contraction of the uterus during the birth of a baby is an example of ____ feedback a. negative b. positive c. inhibitory d. deviating | b. positive |
| of the 11 major body systems, which is the least involved in maintaining homeostasis a. circulatory b. endocrine c. lymphatic d. reproductive | d. reproductive |
| the normal reading or range of normal is called the: | set point |
| which of the following may put one at risk for developing a given disease? environment stress lifestyle all of the above | all of the above |
| which of the following is not one of the basic components in a feedback control loop? effector mechanism transmitter sensor integrating center | transmitter |
| pathogenesis can be defined as: a. a specific disease b. a group of diseases c. the course of disease development d. a subgroup of viruses | the course of disease development |
| positive- feedback control systems: a. have no affect on the deviation setpoint b. accelerate a change \ c. ignore a change d. do no exists in human systems | b. accelerate a change |
| homeostasis can be described as: a. a constant state maintained by living organisms and nonliving organisms b. a state of relative consistency c. adaption to the external environment d. changes in body temperature | a state of relative constancy |
| of the pathogenic organisms, which of the following are the most complex? a. viruses b. tapeworms c. bacteria d. protozoa | tapeworms |
| negative-feedback mechanisms: a. minimize changes in blood glucose levels b. maintain homeostasis c. are responsible for an increased rate of sweating when air temperature is higher than body temprature d. all of the above | d. all of the above |
| of the 11 major body systems, which is the least involved with homeostasis? a. circulatory b. endocrine c. lymphatic d. reproductive | d. reproductive |
| negative-feedback control systems: a. oppose a change b. accelerate a change c. have no affect on the deviation set point d. establish a new set point | a. oppose a change |
| Epidemiology is the study of the ___ of diseases in human populations a. occurrence b. distribution c. transmission d. all of the above are correct | d. all of the above are correct |
| the term that literally means self-immunity is a. autoimmunity b. homoimmunity c. passive immunity d. active immunity | a. autoimmunity |
| the alpha helix is an example of which level of protein structure?a. primary b. secondary c. tertiary d. quaternary | b. secondary |
| DNA: a. is a single strand of nucleotides b. contains the sugar ribose c. is a double-helix strand if nucleotides d. transports amino acids during protein synthesis | c. is a double-helix strand of nucleotides |
| the amino group in an amino acid is | NH3+ |
| Which energy-releasing or energy transferring molecule does not contain a nucleotide? FAD creatine phosphate NAD ATP | Creatine phosphate |
| peptide bonds join together molecules of:m a. glycerol b. glucose c. amino acids d.water | amino acids |
| The roles played by proteins can be divided into which categories? a. structural and functional b. chemical and functional c. structural and chemical dehydration synthesis and hydrolysis | structural and functional |
| If one side of a DNA molecule is CTAGGCTG, the other side would be | GATCCGAC |
| The term glycoprotein, a combination of two words, tells you the compound is made of ____, with ____ being the dominant component a. carbohydrate and protein; protein b. carbohydrate and protein; carbohydrate c. a lipid and a protein; the protein | carbohydrate and protein; protein |
| a structural lipid fond in a cell membrane is a: a. triglyceride b. phospholipid c. steroid | both B and C are correct, phospholipid and steroid |
| the formation of sucrose involves the removal of a molecule of water. This is called: a. hydrolysis b. oxidation c. decomposition d. dehydration synthesis | dehydration synthesis |
| which of the following is not one of the major groups of organic substances in the human body? a. proteins b. salts c. lipids d. nucleic acids | b. salts |
| the element that is present in all proteins but not in carbohydrates is: a. carbon b. hydrogen c. oxygen d. nitrogen | d. nitrogen |
| humans can synthesize 13 of the 21 basic amino acids; the remaining 8, which must be included in the diet, are called: a. enzymes b. essential amino acids c. structural proteins d. peptide bonds | b. essential amino acids |
| what is the most important factor in determining the physical and chemical properties of fatty acids? a. degree of saturation b. presence of glycerol c. available bonds of hydrocarbons d. polarity | a. degree of saturation |
| which of the following is not true about carbohydrates? a. they include substances called sugars b. the are the body's primary source of energy c. they are both parts of DNA and RNA D. All of the above are true | d. all of the above are true |
| after the age of 50, the density of bone: a. levels off and maintains composition b. decreases slowly because of a shift in the remodeling activity c. increase slowly because of a shift in the remodeling activity | b. decreases slowly because of a shift in the remodeling activity |
| which of the following is not a characteristics of the diaphysis? a, provides a bulbous shape for attachment of muscle hallow b. composed of compact bone c. all of the above | a. provides a bulbous shape for attachment of muscle hallow |
| appositional growth of cartilage occurs when chrondocytes begin to divide and secrete a. additional calcium b. additional matrix c. less calcium d. less matrix | b. additonal matrix |
Created by:
kyleehaight12