BIO 253 BUNDLED EXAMS 2026
BIOCHEMISTRY AND METABOLIC PATHWAYS
DRILL PACK ANSWER SHEET
◉ Anatomical position.
Answer: standing erect, facing forward, arms at sides, palms facing
forward.
◉ Body cavities.
Answer: include cranial, vertebral, thoracic, abdominal, and pelvic
cavities.
◉ Negative feedback.
Answer: reverses a change (e.g., body temperature regulation).
◉ Positive feedback.
Answer: increases a change (e.g., childbirth contractions, blood
clotting).
◉ Homeostasis.
Answer: maintaining a stable internal environment.
,◉ Planes/sections.
Answer: sagittal, frontal (coronal), and transverse.
◉ Anatomy vs Physiology.
Answer: anatomy = structure, physiology = function.
◉ 9 Regions of Abdomen.
Answer: right/left hypochondriac, epigastric, right/left lumbar,
umbilical, right/left iliac, hypogastric.
◉ Structure of Atom.
Answer: protons (+), neutrons (0), electrons (−).
◉ Ion.
Answer: atom with a charge (lost/gained electrons).
◉ Cations and Anions.
Answer: Cations (+) and Anions (−).
◉ Ionic bond.
Answer: between cation and anion (forms salts).
, ◉ Covalent bond.
Answer: shares electrons; nonpolar = equal, polar = unequal.
◉ Hydrogen bond.
Answer: weak attraction between H and O/N; holds DNA strands.
◉ Chemical reactions.
Answer: reactants form products.
◉ Synthesis.
Answer: build up.
◉ Decomposition.
Answer: break down.
◉ Acids & Bases.
Answer: pH <7 acid, >7 base; blood pH 7.35-7.45.
◉ Organic vs Inorganic.
Answer: organic contains C/H (carbs, lipids, proteins, nucleic acids).
BIOCHEMISTRY AND METABOLIC PATHWAYS
DRILL PACK ANSWER SHEET
◉ Anatomical position.
Answer: standing erect, facing forward, arms at sides, palms facing
forward.
◉ Body cavities.
Answer: include cranial, vertebral, thoracic, abdominal, and pelvic
cavities.
◉ Negative feedback.
Answer: reverses a change (e.g., body temperature regulation).
◉ Positive feedback.
Answer: increases a change (e.g., childbirth contractions, blood
clotting).
◉ Homeostasis.
Answer: maintaining a stable internal environment.
,◉ Planes/sections.
Answer: sagittal, frontal (coronal), and transverse.
◉ Anatomy vs Physiology.
Answer: anatomy = structure, physiology = function.
◉ 9 Regions of Abdomen.
Answer: right/left hypochondriac, epigastric, right/left lumbar,
umbilical, right/left iliac, hypogastric.
◉ Structure of Atom.
Answer: protons (+), neutrons (0), electrons (−).
◉ Ion.
Answer: atom with a charge (lost/gained electrons).
◉ Cations and Anions.
Answer: Cations (+) and Anions (−).
◉ Ionic bond.
Answer: between cation and anion (forms salts).
, ◉ Covalent bond.
Answer: shares electrons; nonpolar = equal, polar = unequal.
◉ Hydrogen bond.
Answer: weak attraction between H and O/N; holds DNA strands.
◉ Chemical reactions.
Answer: reactants form products.
◉ Synthesis.
Answer: build up.
◉ Decomposition.
Answer: break down.
◉ Acids & Bases.
Answer: pH <7 acid, >7 base; blood pH 7.35-7.45.
◉ Organic vs Inorganic.
Answer: organic contains C/H (carbs, lipids, proteins, nucleic acids).
