BIO 201 EXAM 1 UB WITH CORRECT ANSWERS 2025

BIO 201 EXAM 1 UB WITH
CORRECT ANSWERS 2025



What makes up an atom? correct answers >> Protons,
Neutrons, electrons


Mass number = X+Y correct answers >> Number of Protons ,
Number of Neutrons


List the chemical bonds, strongest to weakest. (5) correct
answers >> Covalent->Ionic->Hydrogen->Hydrophobic->Van
der waals


Define electronegativity correct answers >> Attraction force
that an atomic nucleus exerts on electrons


What makes up an ion? correct answers >> Cation, Anions


What is a complex ion? correct answers >> Covalently
bonded atom that carries a charge


Polar =? correct answers >> Hydrophillic


Non-polar=? correct answers >> Hydrophobic

, What does Acid do? correct answers >> Releases H+
(protons)


What does Base do? correct answers >> Accepts H+ ions


What are Living organisms made out of? correct answers >>
Proteins, Carbohydrates, Lipids, Nucleic Acid


What makes up Proteins? correct answers >> combination 20
amino acids


What are Carbohydrates? correct answers >> Sugar
monomers(monosaccharides) linked to form polysaccharides.
It also stores energy, carbon skeleton


What makes up Nucleic Acid? correct answers >> Nucleotide
Monomers


What force keeps lipid together? correct answers >>
Noncolalent forces between lipid monomers.


Function of enzymes? correct answers >> Catalyze (speed
up) biochemical reaction


What is polypeptide chain? correct answers >> Single,
unbranched chain of amino acids