Questions with All Correct Answers
2025-2026 Updated.
Levels of organization in ecology - Answer Biosphere, ecosystem, communities, population,
organisms, organs and organ systems, tissues, cells, organelles, molecules
Levels of taxonomy - Answer Domain, kingdom, phylum, class, order, family, genus, species
Common themes in the study of life - Answer Evolution, order/organization, reproduction,
growth and development, energy processing, internal regulation, response to environment
The central theory of biology is __________ by means of ___________________ - Answer
evolution, natural selection
Scientific Method - Answer Observation, hypothesis, experiment, and analysis
Covalent Bond - Answer Sharing of a pair of valence electrons by 2 atoms
Polar Covalent Bond - Answer Atom is bonded to a more electronegative atom, the electrons
of bond aren't shared equally.
Ionic Bond - Answer Only 2 ions of opposite charge can form this
Hydrogen Bond - Answer Attraction between a hydrogen and an electronegative atom
van der Waals - Answer weak, occurs when atoms and molecules are very close together. They
stick together. This bond allows gecko to walk on the wall
Dynamic equilibrium - Answer Reactions are still going on, but with no net effect on the
concentrations of reactants and products. This does NOT mean they are equal in concentration.
Acid - Answer substance that increases the hydrogen ion concentration of a solution
, pH of a solution - Answer pH= -log[H+] , pH declines as H+ concentration increases. The lower
the number of pH, the more acidic it is.
Buffers - Answer substance that minimizes changes in the concentrations of H+ and OH-. Most
buffers contain a weak acid and corresponding base.
Isomers - Answer Same number of atoms in the same elements but have different structures
and properties.
Cis-/Trans-isomers - Answer Cis- same side, trans- opposite sides
Enantiomers - Answer mirror image of each other
Hydroxyl Group - Answer -OH
Polar
Carbonyl Group - Answer C=O
ketone
Carboxyl Group - Answer COOH
acid
Amine Group - Answer NH2
base
Sulfhydryl Group - Answer SH
Phosphate Group - Answer PO4^2-
Methyl Group - Answer CH3
Carbohydrates - Answer fuel and building material