Bio 253 exam 1 __ 2026 (Actual Exam) Questions with verified
Answers (Latest Update 2026) UPDATE!!
Anatomy - (ANSWER)Structure of the body
Physiology - (ANSWER)function of the body
Homeostasis - (ANSWER)Maintenance of stable internal environment.
positive feedback loop. - (ANSWER)Enhances change in a system. (Child birth, contractions)
Negative Feedback Loop. - (ANSWER)Reduces change to maintain stability. (Blood pressure, glucose have
to do intervention)
Element - (ANSWER)Matter with specific chemical properties.
Atom - (ANSWER)Smallest unit of an element with chemical properties.
Atomic Structure - (ANSWER)Protons and neutrons in nucleus; electrons orbit.
Ionic Bond - (ANSWER)Electrical attraction between oppositely charged ions.
Covalent Bond - (ANSWER)Sharing of electrons between atoms.
Hydrogen Bond - (ANSWER)Weak bond between polar molecules.
pH Scale - (ANSWER)Measures acidity or alkalinity of a solution.
Acids - (ANSWER)Substances that donate protons in solution.
, Bio 253 exam 1 __ 2026 (Actual Exam) Questions with verified
Answers (Latest Update 2026) UPDATE!!
Bases - (ANSWER)Substances that accept protons in solution.
Carbohydrates - (ANSWER)Organic compounds primarily used for energy.
Lipids - (ANSWER)Nonpolar molecules, essential for energy storage.
Proteins - (ANSWER)Polymers of amino acids performing various functions.
Nucleic Acids - (ANSWER)Molecules made of nucleotides; DNA and RNA.
Cell Membrane - (ANSWER)Barrier made of lipid bilayer and proteins.
Cytoplasm - (ANSWER)Fluid within cells containing organelles.
Mitochondria - (ANSWER)Organelles that produce ATP through respiration.
Microvilli - (ANSWER)Cell extensions that increase surface area.
Cilia - (ANSWER)Hair-like structures that aid in movement.
Flagella - (ANSWER)Long whip-like structures for cell motility.
Passive Transport - (ANSWER)Movement across membrane without energy use.
Simple Diffusion - (ANSWER)Movement of molecules from high to low concentration.
Answers (Latest Update 2026) UPDATE!!
Anatomy - (ANSWER)Structure of the body
Physiology - (ANSWER)function of the body
Homeostasis - (ANSWER)Maintenance of stable internal environment.
positive feedback loop. - (ANSWER)Enhances change in a system. (Child birth, contractions)
Negative Feedback Loop. - (ANSWER)Reduces change to maintain stability. (Blood pressure, glucose have
to do intervention)
Element - (ANSWER)Matter with specific chemical properties.
Atom - (ANSWER)Smallest unit of an element with chemical properties.
Atomic Structure - (ANSWER)Protons and neutrons in nucleus; electrons orbit.
Ionic Bond - (ANSWER)Electrical attraction between oppositely charged ions.
Covalent Bond - (ANSWER)Sharing of electrons between atoms.
Hydrogen Bond - (ANSWER)Weak bond between polar molecules.
pH Scale - (ANSWER)Measures acidity or alkalinity of a solution.
Acids - (ANSWER)Substances that donate protons in solution.
, Bio 253 exam 1 __ 2026 (Actual Exam) Questions with verified
Answers (Latest Update 2026) UPDATE!!
Bases - (ANSWER)Substances that accept protons in solution.
Carbohydrates - (ANSWER)Organic compounds primarily used for energy.
Lipids - (ANSWER)Nonpolar molecules, essential for energy storage.
Proteins - (ANSWER)Polymers of amino acids performing various functions.
Nucleic Acids - (ANSWER)Molecules made of nucleotides; DNA and RNA.
Cell Membrane - (ANSWER)Barrier made of lipid bilayer and proteins.
Cytoplasm - (ANSWER)Fluid within cells containing organelles.
Mitochondria - (ANSWER)Organelles that produce ATP through respiration.
Microvilli - (ANSWER)Cell extensions that increase surface area.
Cilia - (ANSWER)Hair-like structures that aid in movement.
Flagella - (ANSWER)Long whip-like structures for cell motility.
Passive Transport - (ANSWER)Movement across membrane without energy use.
Simple Diffusion - (ANSWER)Movement of molecules from high to low concentration.
