BIOLOGY 100 EXAM 1 EKDALE SDSU
FINAL PREP 2026 VERIFIED
ANSWERS INCLUDED
◉ What is the correct order of complexity?
Answer: Atom, Molecule, Organelle, Cell, Tissue, Organ, System,
Organism, Population, Community, Ecosystem, Biosphere
◉ What is the definition of a population?
Answer: Members of a single type of living thing, living together in a
defined area
◉ What is homeostasis?
Answer: Maintaining a constant internal environment
◉ What is the definition of a tissue?
Answer: A large mass of similar cells that make up a part of an organism
and perform a specific function.
◉ Living things inherit information from their parents encoded in what?
Answer: DNA
◉ What are the subatomic particles of an atom?
Answer: protons, neutrons, and electrons
, ◉ Which subatomic particle plays the greatest role in chemical
reactions?
Answer: electrons
◉ Why will atoms react with other atoms?
Answer: their outermost shell of electrons has not been filled
◉ What is the definition of a hydrophobic molecule?
Answer: A molecule that is repelled by water or is "water-fearing".
◉ How many covalent bonds can oxygen make with hydrogen?
Answer: two
◉ What is the definition of a solute? Solvent?
Answer: A solute is the substance to be dissolved (example: sugar). The
solvent is the one doing the dissolving (example: water).
◉ What is the definition of an acid (in regards to hydrogen atoms)?
Answer: Acids are substances that can donate H+ ions to bases.
◉ What is glycogen?
Answer: a substance deposited in bodily tissues as a store of
carbohydrates. It is a polysaccharide that forms glucose on hydrolysis.
FINAL PREP 2026 VERIFIED
ANSWERS INCLUDED
◉ What is the correct order of complexity?
Answer: Atom, Molecule, Organelle, Cell, Tissue, Organ, System,
Organism, Population, Community, Ecosystem, Biosphere
◉ What is the definition of a population?
Answer: Members of a single type of living thing, living together in a
defined area
◉ What is homeostasis?
Answer: Maintaining a constant internal environment
◉ What is the definition of a tissue?
Answer: A large mass of similar cells that make up a part of an organism
and perform a specific function.
◉ Living things inherit information from their parents encoded in what?
Answer: DNA
◉ What are the subatomic particles of an atom?
Answer: protons, neutrons, and electrons
, ◉ Which subatomic particle plays the greatest role in chemical
reactions?
Answer: electrons
◉ Why will atoms react with other atoms?
Answer: their outermost shell of electrons has not been filled
◉ What is the definition of a hydrophobic molecule?
Answer: A molecule that is repelled by water or is "water-fearing".
◉ How many covalent bonds can oxygen make with hydrogen?
Answer: two
◉ What is the definition of a solute? Solvent?
Answer: A solute is the substance to be dissolved (example: sugar). The
solvent is the one doing the dissolving (example: water).
◉ What is the definition of an acid (in regards to hydrogen atoms)?
Answer: Acids are substances that can donate H+ ions to bases.
◉ What is glycogen?
Answer: a substance deposited in bodily tissues as a store of
carbohydrates. It is a polysaccharide that forms glucose on hydrolysis.
