Bio 100 quiz 1 UPDATED Exam Questions
and CORRECT Answers
Hypothesis - CORRECT ANSWER - A testable explanation or prediction for an
observation or scientific question.
dependent variable - CORRECT ANSWER - The variable that is measured or observed in
response to changes in the independent variable.
independent variable - CORRECT ANSWER - The variable that is changed or
manipulated by the researcher.
Control variable - CORRECT ANSWER - A factor kept constant to ensure the validity of
the experiment
P-value - CORRECT ANSWER - The probability that the observed results are due to
chance
Ion - CORRECT ANSWER - An atom or molecule that has gained or lost electrons, giving
it a charge.
Isotope - CORRECT ANSWER - Atoms of the same element with different numbers of
neutrons.
Radioactive decay - CORRECT ANSWER - The process by which an unstable atomic
nucleus loses energy by emitting radiation.
Octet Rule - CORRECT ANSWER - Atoms tend to gain, lose, or share electrons to have 8
electrons in their outer shell.
, polar covalent bond - CORRECT ANSWER - A bond where electrons are shared
unequally, causing partial charges on atoms.
Ionic bond - CORRECT ANSWER - A chemical bond formed by the transfer of electrons
from one atom to another, creating ions.
nonpolar covalent bond - CORRECT ANSWER - bond where electrons are shared equally
between atoms.
Hydrogen bond - CORRECT ANSWER - Attraction between a slightly positive hydrogen
atom and a slightly negative atom.
pH - CORRECT ANSWER - The concentration of hydrogen ions (H⁺) in a solution;
indicates acidity or alkalinity.
Acid-Base Balance - CORRECT ANSWER - Acids have more protons H⁺ ions (low pH).
Bases have less protons H⁺ or donate OH⁻ ions (high pH).
Acid examples - CORRECT ANSWER - HCI, COOH, H2SO4, H2CO3
Base examples - CORRECT ANSWER - NaOH, LiOH, Ca(OH)2
Lipids and function - CORRECT ANSWER - Hydrophobic molecules used for energy
storage, cell membranes, and signaling.
Proteins and function - CORRECT ANSWER - Made of amino acids; perform structural,
transport, enzymatic, and regulatory roles. Machine of cell
Nucleic acid - CORRECT ANSWER - Store and transmit genetic information (DNA &
RNA).
and CORRECT Answers
Hypothesis - CORRECT ANSWER - A testable explanation or prediction for an
observation or scientific question.
dependent variable - CORRECT ANSWER - The variable that is measured or observed in
response to changes in the independent variable.
independent variable - CORRECT ANSWER - The variable that is changed or
manipulated by the researcher.
Control variable - CORRECT ANSWER - A factor kept constant to ensure the validity of
the experiment
P-value - CORRECT ANSWER - The probability that the observed results are due to
chance
Ion - CORRECT ANSWER - An atom or molecule that has gained or lost electrons, giving
it a charge.
Isotope - CORRECT ANSWER - Atoms of the same element with different numbers of
neutrons.
Radioactive decay - CORRECT ANSWER - The process by which an unstable atomic
nucleus loses energy by emitting radiation.
Octet Rule - CORRECT ANSWER - Atoms tend to gain, lose, or share electrons to have 8
electrons in their outer shell.
, polar covalent bond - CORRECT ANSWER - A bond where electrons are shared
unequally, causing partial charges on atoms.
Ionic bond - CORRECT ANSWER - A chemical bond formed by the transfer of electrons
from one atom to another, creating ions.
nonpolar covalent bond - CORRECT ANSWER - bond where electrons are shared equally
between atoms.
Hydrogen bond - CORRECT ANSWER - Attraction between a slightly positive hydrogen
atom and a slightly negative atom.
pH - CORRECT ANSWER - The concentration of hydrogen ions (H⁺) in a solution;
indicates acidity or alkalinity.
Acid-Base Balance - CORRECT ANSWER - Acids have more protons H⁺ ions (low pH).
Bases have less protons H⁺ or donate OH⁻ ions (high pH).
Acid examples - CORRECT ANSWER - HCI, COOH, H2SO4, H2CO3
Base examples - CORRECT ANSWER - NaOH, LiOH, Ca(OH)2
Lipids and function - CORRECT ANSWER - Hydrophobic molecules used for energy
storage, cell membranes, and signaling.
Proteins and function - CORRECT ANSWER - Made of amino acids; perform structural,
transport, enzymatic, and regulatory roles. Machine of cell
Nucleic acid - CORRECT ANSWER - Store and transmit genetic information (DNA &
RNA).
