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UCI Bio 93- Midterm 1 Exam Questions And Verified Detailed Answers 100% Pass Guaranteed
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UCI Bio 93- Midterm 1 Exam Questions And Verified DetailedAnswers 100% Pass Guaranteed
smallest unit of chemical elements - Answer atoms
two or more atoms combined - Answer molecules
two or more elements combined in a fixed ration - Answer compound
. are 4 elements that make up 96% of all living matter - Answer C, O, H, N
what is the strongest bond? - Answer covalent bond
sharing of electrons by two atoms - Answer covalent
transfer of electrons between two atoms - Answer ionic
what is a weak bond? - Answer hydrogen bond
the H atom forms one covalent bond and a second weaker bond with an atom in another
molecules - Answer hydrogen bond
equal sharing of electrons
(two of the same element) - Answer nonpolar
unequal sharing of electrons
has a charge
(water) - Answer polar
,what is the charge of O in water? - Answer negative
what is the charge of H in water? - Answer positive
interactions between water molecules
(H2O with H2O) - Answer cohesion
interactions between water and other molecules - Answer solvent
what is the maximum amount of bonds that hydrogen can form? - Answer 4 bonds
in room temperature of water what % is the maximum amount of bonds going to be
made? - Answer 15%
when H+ concentration increases. - Answer more acidic
what H- concentration decreases. - Answer more basic
affinity for water
polar and ionic bonds - hydrophilic
repel water
non polar covalent bonds - hydrophobic
chemical processes sensitive to pH changes resist change in the pH solution - buffers
pH of human blood. - 7.4
, what are the most important buffers in blood? - carbonic acid and bicarbonate
when pH increases in blood @blood becomes more basic@ - right
ability to respond to a decline in pH of blood ie become more acidic Answer left
building blocks of biomolecules Answer carbon atoms
number of VE for carbon? Answer 4 VE
how functional groups are attached to the carbon framework? Answer covalent bonds
-alcohols
-polar
solubilizes organic molecules such as sugars Answer hydroxyl
-ketones intra skeleton
-aldehydes at end of skeleton Answer carbonyl
-acidic
-weak acid
hydroxyl and carbonyl combined Answer carboxyl
-base
-animes
-can obtain H from solutions around them - Answer amino
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