Download Ch 41 Worksheet Animal Nutrition File

AP Biology
Mrs. Farish
Name ____________________________
CH. 41: Worksheet: Animal Nutrition
Complete the table
Complete the following table by naming the organs described.
Organ
Main Functions
Mechanically breaks down food, mixes it with saliva
Moistens food; start polysaccharide breakdown;
buffer acidic foods in mouth
Stores, mixes, dissolves food; kills many
microorganisms; starts protein breakdown; empties
in a controlled way
Digests and absorbs most nutrients
Produces enzymes that break down all major food
molecules; produces buffers against hydrochloric
acid from stomach; secretes bicarbonate
Secretes bile for fat emulsification; plays role in
carbohydrate, fat, and protein metabolism
Stores, concentrates bile
Stores, concentrates undigested matter by
absorbing water and salts
Controls expulsion of undigested and unabsorbed
residues from end of gut
Fill – in –the- Blanks
Saliva contains an enzyme, ________________ ________________ that breaks down starch. ConTractions force the larynx against a cartilaginous flap called the ________________, which closes off
the trachea. The ________________ is a muscular tube that propels food to the stomach. Any alternating progressions of contracting and relaxing muscle movements along the length of a tube is known as
________________. ________________is an enzyme that works in the stomach to begin to
breakdown proteins.
Carbohydrates include sugars, and ________________. If these foods are chewed thoroughly,
________________ ________________ in the mouth digests to the ________________
level. (double level)
Because no carbohydrate digestions occurs in the ________________, if you gulped down your
Carbohydrates, digestion will begin in the ________________ ________________, where
________________ produced by the pancreas would do what should have been done in the mouth.
Digestion of disaccharides to monosaccharides also occurs in the________________ ______________.
The enzymes responsible are ________________with names such as sucrase, lactase, and maltase.
Proteins digestions begins in the ________________ by ________________secreted by the lining
of the stomach. Protein digestion is completed in the ________________ ________________ by
enzymes know as trypsin and chymotrypsin produced by the ________________.
________________, produced by the pancreas but acting in the ________________ _____________
brakes down fat. ________________, which is secreted by the liver, stored in the ______________,
and does not contain digestive enzymes, emulsifies any fat globule it contacts (converts it into small
droplets coated with bile salts), thereby increasing the surface area of the substrate upon which
________________ can act.
________________ are made in the pancreas, but convert DNA and RNA into nucleotides in the small
intestine.
Nutrients are mostly digested and absorbed in the ________________ ________________.