BIO-181 TEST 1 GCU QUESTIONS WITH
CORRECT ANSWERS 2025-2026
Hypothesis - CORRECT ANSWER -
ARproposed, scientifically testable explanation for an observed phenomenon.
Discovery science - CORRECT ANSWER -
The process of scientific inquiry that focusesRon using observations to describe nature
Observation - CORRECT ANSWER -
The process of gathering information about events or processes in a careful, orderly way
Experimental Group - CORRECT ANSWER -
the group in an experiment that receives the variable being tested
Control Group - CORRECT ANSWER -the group that does not receive the experimental treatment.
Essential Element - CORRECT ANSWER -
ARchemical element required for an organism to survive, grow, and reproduce.
What are the essential elements? - CORRECT ANSWER -Hydrogen
Oxygen
Nitrogen
Carbon
(HONC)
Sulfur
Trace Elements - CORRECT ANSWER -required by an organism in only minute quantities
Electronegativity - CORRECT ANSWER -
ARmeasure of the ability of an atom in a chemical compound to attract electrons
, Covalent Bond - CORRECT ANSWER -
Where electrons are shared between atoms and usually formed between non-metals.
Polar Covalent Bond - CORRECT ANSWERR-
When the electrons being shared are not shared equally, due to electronegativity of the elements in the
molecule, causing one side to have a net positive charge and the other net negative.
Nonpolar Covalent Bond - CORRECT ANSWER -
A covalent bond in which the electrons are shared equally between two atoms.
Ionic Bond - CORRECT ANSWER -
Where electrons are not shared, yet stolen, one atom gives an electron and the other takes the electron
. Atoms that gives electron becomes cations and atoms that gain electrons become anions.
Ion - CORRECT ANSWER -An atom or group of atoms that has a positive or negative charge.
Anion - CORRECT ANSWER -A negatively charged ion
Cation - CORRECT ANSWER -A positively charged ion
Hydrogen Bond - CORRECT ANSWER -
Attraction between a slightly positive hydrogen atom and a slightly negative atom.
Van der Waals interactions - CORRECT ANSWER -
individually weak and occur only when atoms and molecules are very close together
List the bonds from weakest to strongest. - CORRECT ANSWER -Hydrogen, Covalent Bond, Ionic Bond.
Chemical Equilibrium - CORRECT ANSWER -
When the rate of the forward reaction equals the rate of the backward reaction.
CORRECT ANSWERS 2025-2026
Hypothesis - CORRECT ANSWER -
ARproposed, scientifically testable explanation for an observed phenomenon.
Discovery science - CORRECT ANSWER -
The process of scientific inquiry that focusesRon using observations to describe nature
Observation - CORRECT ANSWER -
The process of gathering information about events or processes in a careful, orderly way
Experimental Group - CORRECT ANSWER -
the group in an experiment that receives the variable being tested
Control Group - CORRECT ANSWER -the group that does not receive the experimental treatment.
Essential Element - CORRECT ANSWER -
ARchemical element required for an organism to survive, grow, and reproduce.
What are the essential elements? - CORRECT ANSWER -Hydrogen
Oxygen
Nitrogen
Carbon
(HONC)
Sulfur
Trace Elements - CORRECT ANSWER -required by an organism in only minute quantities
Electronegativity - CORRECT ANSWER -
ARmeasure of the ability of an atom in a chemical compound to attract electrons
, Covalent Bond - CORRECT ANSWER -
Where electrons are shared between atoms and usually formed between non-metals.
Polar Covalent Bond - CORRECT ANSWERR-
When the electrons being shared are not shared equally, due to electronegativity of the elements in the
molecule, causing one side to have a net positive charge and the other net negative.
Nonpolar Covalent Bond - CORRECT ANSWER -
A covalent bond in which the electrons are shared equally between two atoms.
Ionic Bond - CORRECT ANSWER -
Where electrons are not shared, yet stolen, one atom gives an electron and the other takes the electron
. Atoms that gives electron becomes cations and atoms that gain electrons become anions.
Ion - CORRECT ANSWER -An atom or group of atoms that has a positive or negative charge.
Anion - CORRECT ANSWER -A negatively charged ion
Cation - CORRECT ANSWER -A positively charged ion
Hydrogen Bond - CORRECT ANSWER -
Attraction between a slightly positive hydrogen atom and a slightly negative atom.
Van der Waals interactions - CORRECT ANSWER -
individually weak and occur only when atoms and molecules are very close together
List the bonds from weakest to strongest. - CORRECT ANSWER -Hydrogen, Covalent Bond, Ionic Bond.
Chemical Equilibrium - CORRECT ANSWER -
When the rate of the forward reaction equals the rate of the backward reaction.
