Biology/Anatomy Chapter 25: Digestive System Exam Prep (2025–2026)

Biology/Anatomy Chapter
25: Digestive System
Exam Prep (2025–2026)




Including Exam Questions
and Certified Answers, with
a 100% Guarantee of
Success

, chapter 25 - digestive system
Question 1
digestive
system Correct
Answer
processes food, extracts nutrients, eliminates waste


Question 2 reabsorption Correct
Answer from filtrate in nephron tubule
into blood


Question 3 propulsion
Correct Answer
Movement of food through the digestive tract.
bolus


Question 4
mechanical digestion
Correct Answer
chewing and churning
- exposes more food surface to digestive enzymes


Question 5 chemical
digestion Correct Answer
macromolecules to
monomers carbohydrates
proteins fats nucleic acids


Question 6 what happens to the nutrients in ingested food that are not digested and are
absorbed as is? Correct Answer vitamins, amino acids, minerals, cholesterol, H20

,Correct Answer




Question 7
how are polysaccharides broken
down Correct Answer
di/monosaccride


Question 8 how are proteins
broken down peptides


Question 9
how are nucleic acid broken down
Correct Answer nucleotides


Question 10
what are the 4 biological molecule categories in
polymers Correct Answer carbohydrate proteins lipids
nucleic acids


Question 11 carbohydrate Correct Answer plants make of
starch (we digest) and cellulose (we don't digest) animals make
glycogen



Question 12
lipid
Correct Answer no polymers ex:
triglycerides or phospholipids


Question 13 nucleic
acids
Correct Answer
polynucleotides
- nucleotides linked together to make a strand


Question 14 proteins Correct Answer polypeptides (many
amino acids linked together in a chain)
- can have four levels of structure


Question 15 primary
structure of protein

, Correct Answer


sequence of amino acids linked by peptide bonds


Question 16
secondary structure of protein Correct Answer usually
maintained by hydrogen bonds, which shape this helix


Question 17
tertiary structure of protein Correct Answer folding the helix results from hydrogen
bonds with surrounding water molecules and disulfide bridges between cysteine
amino acids


Question 18
Quanternary structure of protein Correct
Answer
individual polypeptides are linked to one another by hydrogen bonds or disulfide
bridges


Question 19
what are the 4 biological molecule categories in monomers

Correct Answer carbohydrate - monosaccharide protein

- amino acids

lipids (varied group) - no clear-cut subunit, but fats are made up of glycerol plus three
fatty acids (aren't real monomers) nucleic acid - nucleotide



Question 20
alimentary canal
Correct
Answer
digestive tract


Question 21 what glands do ingestion
Correct Answer oral cavity: salivary
glands and tongue


Question 22 gastrointestinal
tract stomach and intestines