Biology Exam 4-part2 Ch21

24 Questions | Total Attempts: 142

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Questions and Answers
  • 1. 
    Bile produced in the liver is stored in the _______ before entering the intestine.
    • A. 

      Blood

    • B. 

      Pancreas

    • C. 

      Gallbladder

    • D. 

      Intestinal wall

    • E. 

      Common bile duct

  • 2. 
    Which of the following nutrients is digested only after it reaches the small intestines?
    • A. 

      Protein

    • B. 

      Complex carbohydrate

    • C. 

      Fat

  • 3. 
    Nutrients absorbed by the intestines move directly to the liver, which
    • A. 

      Converts glucose to alcohol

    • B. 

      Converts the nutrients into monomers

    • C. 

      Manages the amount of glucose that is converted to polysaccharides

    • D. 

      Converts excess glucose to glycogen

  • 4. 
    Absorption of water is a major function of the
    • A. 

      Colon

    • B. 

      Esophagus

    • C. 

      Cecum

    • D. 

      Appendix

    • E. 

      Rectum

  • 5. 
    Which of the following statements regarding animal digestive systems is false?
    • A. 

      Prokaryotes in the colon and cecum digest plant material

    • B. 

      We expect that an herbivore will have a longer alimentary canal than a carnivore of similar body size.

    • C. 

      Meat is more difficult to digest than vegetable matter because of its protein content

    • D. 

      Many herbivorous animals have cellulose-digesting microbes in their colon and cecum.

    • E. 

      Rumination helps to soften and break down plant fibers, making them more accessible to digestion by microbes.

  • 6. 
    Lions are not always successful hunters, and may go days between meals. What evolutionary adaptation helps the lion survive periods of famine?
    • A. 

      An expandable stomach

    • B. 

      Formation of a two-chambered stomach

    • C. 

      Production of amylase

    • D. 

      An extended cecum

    • E. 

      A rich microbial flora in the colon

  • 7. 
    Interestingly, most herbivorous animals do not have the ability to digest the cellulose in plants. However, in the absence of this ability, they have evolved a mechanism that allows them to survive despite eating only plant matter, namely A) converting cellulose to other carbohydrates.
    • A. 

      Converting cellulose to other carbohydrates

    • B. 

      Production of saliva containing amylase

    • C. 

      Drinking large volumes of water

    • D. 

      Digestion by symbiotic microorganisms

    • E. 

      Avoidance of platns containing cellulose

  • 8. 
    The rate of energy consumption by the body is called
    • A. 

      Glycolsis

    • B. 

      Metabolism

    • C. 

      Metabolic rate

    • D. 

      Digestion

    • E. 

      Consumption

  • 9. 
    Organisms suffering from malnourishment have a diet deficient in
    • A. 

      Calories

    • B. 

      One or more essential nutrients

    • C. 

      Protein

    • D. 

      Water

    • E. 

      Bile and acids needed for digestion

  • 10. 
    Essential fatty acids, which are required in the human diet, are
    • A. 

      Stored in the gallbladder

    • B. 

      Required in order to synthesize most vitamins

    • C. 

      The fatty acids that humans can synthesize from simpler molecules.

    • D. 

      The fatty acids used in the construction of the phospholipids of cell membranes.

    • E. 

      Those fatty acids that humans are unable to synthesize.

  • 11. 
    Vegetarians who rely upon a single type of plant food
    • A. 

      May become protein-deficient

    • B. 

      May become severely dehydrated

    • C. 

      Run the risk of depleting their liver of glycogen

    • D. 

      Are soon unalbe to produce sufficicnet quantities of bile

    • E. 

      Live longer than people who ingest animal protein

  • 12. 
    Which of the following vitamins is fat-soluable and consequently, can be stored in body fat?
    • A. 

      Pyridoxine

    • B. 

      Pantothenic acid

    • C. 

      Biotin

    • D. 

      K

    • E. 

      Niacin

  • 13. 
    Which of the following statements regarding vitamins is true?
    • A. 

      They must be ingested in large quantities.

    • B. 

      They lower the activation energy required for biochemical reactions.

    • C. 

      They can serve as coenzymes or parts of coenzymes.

    • D. 

      They are major sources of dietary calories.

    • E. 

      They are simple inorganic compounds.

  • 14. 
    If a person on a fad diet experiences muscle cramps and reduced appetite, a physician would suspect that this individual is likely suffering from a deficiency of
    • A. 

      Table salt

    • B. 

      Zinc

    • C. 

      Calcium

    • D. 

      Iodine

    • E. 

      Iron

  • 15. 
    Which of the following diseases is associated with obesity?
    • A. 

      Cardiovascular disease

    • B. 

      Chicken pox

    • C. 

      Cancer

    • D. 

      Rheumatoid arthritis

    • E. 

      Multiple sclerosis

  • 16. 
    To reduce the risk of cancer, it has been suggested that a diet high in ________ is beneficial.
    • A. 

      Moldy foods

    • B. 

      Antioxidants

    • C. 

      Red meat

    • D. 

      Cured and smoked foods

    • E. 

      Bacon

  • 17. 
    While the chyme is in the stomach _______ is converted to ______ in the presence of ________.
    • A. 

      Pepsiogen,pepsin, HCL

    • B. 

      Pepsin, HCL, Pepsinogen

    • C. 

      Amylase, HCL, pepsin

    • D. 

      Amylase, maltose, HCL

  • 18. 
    The formation of pepsin in the stomach is an example of ____________________________
    • A. 

      Positive feedback mechanism

    • B. 

      Negative feedback mechanism

    • C. 

      Acid-base reaction

    • D. 

      Emulsification

  • 19. 
    _______________________is not the function of liver
    • A. 

      Scretes insulin

    • B. 

      Produces bile juice

    • C. 

      Converts glucose to glycogen

    • D. 

      Converts toxic ammonia into urea

  • 20. 
    Which of the following is not true
    • A. 

      Lipase converts fat into fatty acid and glycerol

    • B. 

      Pepsin converts protein into amino acids

    • C. 

      Amylase converts polysccharides into glucose

    • D. 

      Amylase converts lipids into fatty acid and glycerol

  • 21. 
    Chewing bread in mouth gives a sweet taste because
    • A. 

      Amylase in saliva converts starch into glucose

    • B. 

      Lipase converts fat into fatty acid and glycerol

    • C. 

      Pepsin converts protein into amino acids

    • D. 

      Trypsin converts protein into amino acids

  • 22. 
    Which of the follwing is related to the inflamation of the portion at the junction of small and large intestine?
    • A. 

      Appendicitis

    • B. 

      Gastric ulcer

    • C. 

      Constipation

    • D. 

      Heart burn

    • E. 

      Diahoea

  • 23. 
    Rabbits have a simple stomach and large cecum, they sometime eat their feces because
    • A. 

      Their sense of distinguishing food from feces is poor

    • B. 

      Partially digested food in their cecum is eliminated and it still comtains a lot of nutrients.

    • C. 

      They have symbiotic microbes in the cecum.

    • D. 

      They are rumminant mammals.

  • 24. 
    The bilejuice involved conversion of huge lump of fat into droplets of fat is called
    • A. 

      Emulsification

    • B. 

      Peristlasis

    • C. 

      Lipase

    • D. 

      Fatty acids and glyceral

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