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Biology Exam 4- Part 2

29 Questions
Biology Quizzes & Trivia

To help me prepare for my biology exam

Questions and Answers
  • 1. 
    Humpback whales
    • A. 

      Eat nothing but kelp

    • B. 

      Use baleen to catch salmon

    • C. 

      Catch and eat salmon and seals throughout the year

    • D. 

      Use baleen to blow bubbles for capturing krill

    • E. 

      Use a bubble net system to catpure krill for food

  • 2. 
    Digestion is the
    • A. 

      Churning of food in the stomach and intestine

    • B. 

      Absorption of nutrients suspended in water

    • C. 

      Process of building proteins from amino acids

    • D. 

      Conversion of glycogen to glucose

    • E. 

      Chemical and mechanical breakdown of food for absorption into the body

  • 3. 
    During which of teh follwoign stages of food processsing is undigested material removed from teh digestive tract?
    • A. 

      Elmination

    • B. 

      Gestation

    • C. 

      Absorption

    • D. 

      Ingestion

    • E. 

      Digestion

  • 4. 
    What happens to nutrient macromolecules in an animals digestive tract?
    • A. 

      They are abosrbed whole and are broken down into monomers in the cells that ultimately use them

    • B. 

      Nucleuic acids and triclycerides( which diffuse across the plasma membrane) are not digested into monomers, but other macromolecules are.

    • C. 

      The digestive breakdown of macromoles is keyed to teh body's ened for monomers; only the monomers that immediately needed are produced

    • D. 

      Nutreitns macromolecules are difested into monomers before absorption

    • E. 

      Proteins and nucleic acids are digested into monomers before absorption; energy-storage macromolecules (starch and fat) are absorbed whole.

  • 5. 
    Through digestion, polysaccharides are broken down into
    • A. 

      Monosaccharides

    • B. 

      Glycerols

    • C. 

      Nucleotides

    • D. 

      Fatty acids

    • E. 

      Amino acids

  • 6. 
    Through digestion, nucleic acis are broken down into
    • A. 

      Amino acids

    • B. 

      Glycerols

    • C. 

      Monosaccharides

    • D. 

      Nucleotides

    • E. 

      Fatty acids

  • 7. 
    Which of the follwogin organims has a complete digestive system?
    • A. 

      Hydra

    • B. 

      Flatworm

    • C. 

      Paramecium

    • D. 

      Cow

  • 8. 
    Which of the follwoing organism has an incomplete digestive system?
    • A. 

      Earth worm

    • B. 

      Flat worm

    • C. 

      Frog

    • D. 

      Birds

    • E. 

      Cow

  • 9. 
    An animals digestive tract that consists of two openings (a mouth and anus) is called
    • A. 

      The digestive enzyme center

    • B. 

      A mammalian crop

    • C. 

      The alimentary canal

    • D. 

      An excretory system

    • E. 

      An intestine

  • 10. 
    An alimentary canal is best defined as
    • A. 

      A tube-shaped compartment with either one or two openings

    • B. 

      A tube-shaped compartment for transport, digestion, and absorption

    • C. 

      An organ designed for regulation of food passage

    • D. 

      A digestive cavity in which food is churned and mixed

    • E. 

      The compartment in which an animal temporarily stores its food

  • 11. 
    The main funciton of bird's gizzard is to
    • A. 

      Moisten food

    • B. 

      Grind food

    • C. 

      Absorb nutrients

    • D. 

      Store food

    • E. 

      Digest vitamins

  • 12. 
    Which of the following choices list the organs of the bird digestive system in the correct order, from first to last contact with food material?
    • A. 

      Esophagus, stomach, gizzard, crop, intestine, anus

    • B. 

      Esophagus, gizzard, crop, stomach,intestine, anus

    • C. 

      Esphagus, crop, gizzard, stomach, intestine, anus

    • D. 

      Esohagus, gizzard, stomach, crop intestine, anus

    • E. 

      Esophagus, crop, stomach, gizzard, intestine, anus

  • 13. 
    Which of the following correctly list the order of the parts of the human digestive system, form first to alst contact with food matter?
    • A. 

      Oral cavity, pharynx, esophagus, stomach, small intestine, large intestine

    • B. 

      Esophagus, pharynx, stomach, small intestine, large intestine

    • C. 

      Esophagus, parynx, stomach, large intestine, small intestine

    • D. 

      Oral cavity, esophagus, stomach, large intestine, small intestine

    • E. 

      Pharynx, oral cavity, esophagus, stomach, large intestine

  • 14. 
    Smooth muscle propels food throught e alimnetary canal by a process called
    • A. 

      Circular contractions

    • B. 

      Progurgitation

    • C. 

      Peristalsis

    • D. 

      Diffusion

    • E. 

      Active transport

  • 15. 
    Digestion begins in the
    • A. 

      Stomach

    • B. 

      Oral cavity

    • C. 

      Pharynx

    • D. 

      Tongue

    • E. 

      Esophagus

  • 16. 
    The digestion of carbohydrates begins in the mouth.  What is the anem given to starch-digesting enzyme secretated by salivary galnds?
    • A. 

      Amylase

    • B. 

      Bile salts

    • C. 

      Trypsin

    • D. 

      Lipase

    • E. 

      Pepsin

  • 17. 
    Human saliva performs all of the following function except
    • A. 

      Lubricating food

    • B. 

      Break down of proteins

    • C. 

      Nuetralizing food acids

    • D. 

      Break down of starch

  • 18. 
    The epiglottis is a
    • A. 

      Muscular sphincter that closes off the entry to the trachea during swallowing

    • B. 

      Muscle that moves the esophagus into line with teh pharynx during swallowing

    • C. 

      Flap of skin that coers the entry to the treachea except during breathing

    • D. 

      Muscle tha moves the treachea out of line with the pharynx during swallowing

    • E. 

      Flap of cartilage that flips down to cover the entry to the treachea during swallowing

  • 19. 
    The tongue does all of the following except
    • A. 

      Secrete saliva

    • B. 

      Manipulate food

    • C. 

      Push food into the pharynx

    • D. 

      Taste food

    • E. 

      Shape food into a ball call a bolus

  • 20. 
    The Heimlich maneuver is performed to forcibly
    • A. 

      Squeeze the ribs

    • B. 

      Straighten the back

    • C. 

      Depress the diaphragm

    • D. 

      Elevate the diaphragm

    • E. 

      Compress the intestines

  • 21. 
    The stomach mixes food with secretions of the stomach wall to form
    • A. 

      A parietal bolus

    • B. 

      Chyme

    • C. 

      Acid

    • D. 

      Gastic juice

    • E. 

      Gastrin

  • 22. 
    The function of the pyloric sphinter is to
    • A. 

      Retain chyme in the stomach until pepsin digestion is complete

    • B. 

      Periodically release chyme into the duodenum in periodic squirts

    • C. 

      Release bile and pancreatic secretions into the duodenum when chyme is present

    • D. 

      Relase pancreatic secretions into the duodenum when chyme is present

    • E. 

      Release bile into the duodenum when chyme is present

  • 23. 
    Heartburn is usually cuased by the
    • A. 

      Retention of food at the bottom of the esophagus by a sphincter that is reluctant to open

    • B. 

      Compresssion of the lower esophagus by an overfilled stomach

    • C. 

      Reflux of chyme from teh stomach into the lower esophagus

    • D. 

      Irritation of the lower esophagus by substances in spicy food

    • E. 

      Secretion of acid by the lining of the lower esophagus

  • 24. 
    When the wall of the stomach cannot proect the organ ffom the efects of digestion, the result is
    • A. 

      Reverse peristalsis

    • B. 

      Heartburn

    • C. 

      A duodenal ulcer

    • D. 

      Nausea

    • E. 

      A gastic ulcer

  • 25. 
    In the digestive system, most nutrient absorption occurs in the
    • A. 

      Liver

    • B. 

      Stomach

    • C. 

      Large intestine

    • D. 

      Small intestine

    • E. 

      Pancreas

  • 26. 
    Epithelia cells lining the intestine have surgace projections that increase nutrient absorption. These projects are called
    • A. 

      Microvilli

    • B. 

      Cilia

    • C. 

      Flagella

    • D. 

      Cristae

  • 27. 
    which of the following is important in the digestion of lipis?
    • A. 

      Bile salts

    • B. 

      Trypsin

    • C. 

      Nucleuses

    • D. 

      Pepsin

  • 28. 
    What is themain digestive function of the pancreas?
    • A. 

      To produce digestive enzymes and bile salts

    • B. 

      To produce bicarbonate-containing mucus

    • C. 

      To produce bile

    • D. 

      To aid in the control of cholesterol

    • E. 

      To produce digestive enzymes and a bicarbonate buffer

  • 29. 
    Which of the following digestive enzymes is present in children but often not in adults?
    • A. 

      Amylase

    • B. 

      Sucrase

    • C. 

      Maltase

    • D. 

      Lipase

    • E. 

      Lactase