Biology 172 Quiz 10

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Biology 172 Quiz 10
2013-11-12 02:15:00
Biology 172 Quiz 10 exam

Introduction to Animal Architecture & Homeostasis Thermoregulation
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  1. An animal tissue that binds other tissues together and may also provide structural support is _____ tissue. 
    (this multiple choice question has been scrambled)
  2. If you gently twist your ear lobe it does not remain distorted because it contains 
    A.reticular fibers
    B.elastin fibers 
    C.loose connective tissue 
    D.adipose tissue 
    E.collagenous fibers
    Answer Key: B
  3. The longest cells of the body are likely to be 
    A.smooth muscle cells 
    B.squamous cells
    D.cardiac muscle cells 
    E.neuroglia cells
    Answer Key: C
  4. Which of the following is a problem faced by animals as they increase in size? 
    A.reproducing in aqueous environments
    B.decreasing surface-to-volume ratio 
    C.the tendency for larger bodies to be more variable in metabolic rate 
    D.more likely to be subject to predation by larger predators 
    E.losing body heat more readily
    Answer Key: B
  5. Which organ system(s) is/are involved with integrating and coordinating activities of the body. 
    A.endocrine system 
    B.nervous system 
    C.skeletal system
    D.both "A" and "B" above 
    E.none of these
    Answer Key: D
  6. Which type of epithelium would you expect to occur where easy passage of materials across it is desirable (e.g., the walls of the alveolar sacs of the lungs)?
    A.simple squamous 
    C.simple cuboidal 
    D.stratified squamous 
    E.simple columnar
    Answer Key: A
  7. Why must multicellular organisms keep their cells awash in an "internal pond" of interstitial fluid? 
    A.This phenomenon occurs only in aquatic organisms because terrestrial organisms have adapted to life in dry environments. 
    B.Negative feedback will only operate in interstitial fluids. 
    C.Cells of multicellular organisms tend to lose water because of osmosis.
    D.Cells need an aqueous medium for the exchange of nutrients, gases, and wastes. 
    E.Cells of multicellular organisms tend to accumulate wastes, a consequence of diffusion.
    Answer Key: D
  8. An animal that tolerates a broad temperature range is described as being
    B.a poikilotherm endotherm 
    D.a homeotherm 
    E.a thermoregulator
    Answer Key: A
  9. Because a polar bearʻs hair is actually transparent and its skin is black, it can absorb significant heat from its surroundings through which of the following mechanisms? 
    Answer Key: D
  10. Consider an ectotherm and an endotherm of equal body size. The ectotherm is more likely to survive an extended period of food deprivation than the endotherm because 
    A.the ectotherm is sustained by a higher basal metabolic rate 
    B.the ectotherm will invest little to no energy in temperature regulation 
    C.the ectotherm will expend less energy/kg body weight than the endotherm 
    D.actually, assuming equal size, the ectotherm and the endotherm will have the same energy expenditures
    E.both B and C
    Answer Key: E
  11. Flying insects may generate body heat as a consequence of 
    A.nonshivering thermogenesis 
    B.brown fat metabolism
    C.contraction of flight muscles 
    D.catabolism of heat-shock proteins 
    Answer Key: C
  12. The direct transfer of thermal motion between two materials in contact with each other is called
    Answer Key: A
  13. Torpor is 
    A.a physiological adjustment made by an animal to fluctuating temperatures 
    B.when an animal exhibits a hyper-alert state of being alternative physiological state whereby metabolism decreases 
    D.a phenomenon that only occurs during the cold winter months 
    E.a biochemical mechanism whereby an animal utilizes heat energy to produce organic substances from inorganic substances
    Answer Key: C
  14. Which common event most closely resembles negative feedback? 
    A.The chlorine level of a swimming pool decreases when the chlorinator is turned off.
    B.The water shuts off when the float rises in the tank of a toilet. 
    C.There is a continual buildup of moisture in a basement with a dehumidifier running. 
    D.The flame size on a gas stove changes when the gas is turned off. 
    E.There is a decrease in water pressure when the faucet is slowly turned off.
    Answer Key: B
  15. Nonshivering thermogenesis is 
    A.a behavioral adaptation for absorbing heat in ectotherms
    B.a hormone-triggered rise in metabolic rate, often associated with brown fat 
    C.a countercurrent heat exchange of blood going to the limbs
    D.a heat-producing method of large, active fishes 
    E.muscle contractions that have been identified in winter moths
    Answer Key: B
  16. Where in the body would you be most likely to find secretory cells shaped like dice?
    thyroid and salivary glands
  17. The role of an effector in a feedback loop is to _____.
    influence the stimulus