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BIO 219 Final Exam – Questions & Well Detailed Answers
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BIO 219 Final Exam – Questions & Well Detailed Answers
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BIO 219 Final Exam – Questions & Well DetailedAnswers
How small are eukaryotic cells? Right Ans - 10-100 micrometers
Most abundant element of life and present in all of our macromolecules
Right Ans - carbon
Humans are made up of mostly what elements Right Ans - carbon,
hydrogen, nitrogen, oxygen
which element is most abundant in the body by mass? Right Ans - oxygen
covalent bonds are Right Ans - equal sharing of electrons
which bonds are stronger in the cell Right Ans - covalent are stronger than
ionic
ionic bonds are Right Ans - giving up electrons to other atoms (strongest
bonds outside of living system)
4 types of chemical interactions Right Ans - covalent, hydrogen, ionic,
hydrophobic
Saturated fats Right Ans - Have all the hydrogen the carbon atoms can hold
how do polar things interact with each other? Right Ans - hydrogen bonds
protein folding is driven by what? Right Ans - hydrophobic interactions
what determines cells functions Right Ans - the way that molecules interact
covalent bonds that share e- equally Right Ans - non-polar/ hydrophobic
interactions
covalent bonds that share e- unequally Right Ans - polar/hydrophobic
interactions and hydrogen bonds
,hydrogen bonds are what Right Ans - attractions between opposite partial
charges
hydrogen bonds often occur when... Right Ans - molecules are surrounded
by water
how do hydrophobic regions avoid water Right Ans - they stick together
(hydrophobic interactions or Vander Waals Interactions)
during ionic bonding, how much of charges are interacting Right Ans - full
charges
during hydrogen bonding, how much of charges are interacting Right Ans -
partial charges
non-covalent could mean what kinds of interactions Right Ans - ionic,
hydrogen, or hydrophobic interactions
regulation and adjustments to the cell functions depend on Right Ans -
flexibility of molecules
list the decreasing strength of chemical interactions Right Ans - covalent,
ionic, hydrogen, hydrophobic
T/F covalent bonds help molecules to be stable over long time frames Right
Ans - True
What molecules are built with covalent bonds Right Ans -
monosaccharides, amino acids, nucleotides, fatty acids
what bonds are used so that molecules can be flexible Right Ans - non-
covalent bonds so they can be broken and rebuilt frequently
what are some examples of flexible molecules in the cell Right Ans - DNA,
proteins used for transportation
what kind of energy do molecules in the cell have Right Ans - kinetic
energy
, molecules moving randomly use what Right Ans - brownian motion
T/F: Hydrogen bonds are not easily made and broken in water Right Ans -
false
which type of atoms interact with water Right Ans - polar atoms
which type of atoms avoid water Right Ans - non-polar atoms
methyl group Right Ans -
sulfhydryl group Right Ans -
amine group Right Ans -
phosphate group Right Ans -
carbonyl group Right Ans -
hydroxyl group Right Ans -
carboxyl group Right Ans -
aldehyde group Right Ans -
polysaccharides are made of Right Ans - monosaccharides
proteins are made of Right Ans - amino acids
nucleic acids are made of Right Ans - nucleotides
fats (lipids) are made of Right Ans - fatty acids
amino acid structure Right Ans -
nucleotide structure Right Ans -
monosaccharides structure Right Ans -
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