BIO 202 SBU EXAM 1 STUDY GUIDE & PRACTICE QUESTIONS
2026/2027
weight of each subatomic particle - ANS✔✔ - Proton 1 amu
- Neutron 1 amu
- Electron 1/2000 amu
atomic number - ANS✔✔ # of protons
mass number - ANS✔✔ # of protons and neutrons
isotopes - ANS✔✔ atoms of the same element that have different # of neutrons
radioactive isotopes - ANS✔✔ the nucleus decays spontaneously.
if energy is absorbed - ANS✔✔ electrons move to the outer shells
if energy is released - ANS✔✔ electrons move toward the nucleus
cohesion - ANS✔✔ water molecules attract to each other
surface tension - ANS✔✔ how hard it is to break the surface of a liquid
water is less dense as a - ANS✔✔ solid than a liquid
hydroxyl group - ANS✔✔ polar
, carbonyl group - ANS✔✔ ketoses & aldoses
carboxylic acid group - ANS✔✔ polar, acts as an acid
amino group - ANS✔✔ acts as a base, can pick up H+ from a solution
sulfhydryl group - ANS✔✔ thiol
SH
polymers - ANS✔✔ a long molecule consisting of similar building blocks linked by covalent
bonds
monomers - ANS✔✔ repeating units
building blocks of a polymer
dehydration synthesis - ANS✔✔ molecules combine by the removal of water
hydrolysis - ANS✔✔ add water to break down a polymer
carbohydrates - ANS✔✔ sugars & polymers of sugars
Monosaccharides - ANS✔✔ have molecular formulas that are multiples of CH2O
aldose - ANS✔✔ the carbonyl group is on the end of the chain
2026/2027
weight of each subatomic particle - ANS✔✔ - Proton 1 amu
- Neutron 1 amu
- Electron 1/2000 amu
atomic number - ANS✔✔ # of protons
mass number - ANS✔✔ # of protons and neutrons
isotopes - ANS✔✔ atoms of the same element that have different # of neutrons
radioactive isotopes - ANS✔✔ the nucleus decays spontaneously.
if energy is absorbed - ANS✔✔ electrons move to the outer shells
if energy is released - ANS✔✔ electrons move toward the nucleus
cohesion - ANS✔✔ water molecules attract to each other
surface tension - ANS✔✔ how hard it is to break the surface of a liquid
water is less dense as a - ANS✔✔ solid than a liquid
hydroxyl group - ANS✔✔ polar
, carbonyl group - ANS✔✔ ketoses & aldoses
carboxylic acid group - ANS✔✔ polar, acts as an acid
amino group - ANS✔✔ acts as a base, can pick up H+ from a solution
sulfhydryl group - ANS✔✔ thiol
SH
polymers - ANS✔✔ a long molecule consisting of similar building blocks linked by covalent
bonds
monomers - ANS✔✔ repeating units
building blocks of a polymer
dehydration synthesis - ANS✔✔ molecules combine by the removal of water
hydrolysis - ANS✔✔ add water to break down a polymer
carbohydrates - ANS✔✔ sugars & polymers of sugars
Monosaccharides - ANS✔✔ have molecular formulas that are multiples of CH2O
aldose - ANS✔✔ the carbonyl group is on the end of the chain