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PSIO 201 Final Exam Guide| 209 Questions with 100% Correct with Solutions
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PSIO 201 Final Exam Guide| 209 Questions with 100% Correct with Solutions
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PSIO 201 Final Exam Guide| 209Questions with 100% Correct with
Solutions
____ is the result of cell manipulation of the energy stored in chemical bonds (continuously
breaking) - Ans metabolism
catalyst - Ans compounds that make reactions go faster by reducing the amount of energy to
get them started.
speed up reactions
reduces Ea
biological catalyst (protein in cells) - Ans enzymes
hexokinase - Ans an enzyme in the cytoplasm of cells
solution - Ans mixture of two or more components
___ are mixed in a ___ (usually water) - Ans solutes (salt); solvent (aqueous solution)
solutes are dissolved in the ____ - Ans solvent (water)
An example of cation would be...? - Ans K+
A chemical bond that involves the unequal sharing of electrons, such as in waters, is called - Ans
polar covalent bond
,True or False
Hydrogen Bonds are the strongest type of bond in biological systems - Ans False; weakest
moles have _______ _______ but they have the _____ _____ _______ - Ans different masses;
same # of particles
H+ - Ans naked proton, highly reactive
adds or subtracts electrical charge and thereby influences structure and function of molecules -
Ans H+
pH= - Ans -log [H+]
the _____ the concentration of H+ proton the _____ the pH - Ans greater (lower)
concentration; lower (greater) pH
Buffers - Ans act as a sponge on H+ adding or removing H+ to keep [H+] relatively constant
organic compounds - Ans 1. lipids (C,H)
2. carbohydrates (C,H,O)
3. proteins (C,H,O,N)
4. nucleic acid (C,H,O,N,P)
what causes a lipid to be unsaturated making it harder to stack? - Ans a double bond
carbohydrates - Ans energy source
dehydration - Ans 2 monosaccharides linked together (removing an H)
, protein contains what groups? - Ans amino and carboxyl +side group
what hold the double helix structure - Ans hydrogen bonds
adenine + ribose - Ans adenosine
adenosine + 2 phosphate - Ans Adenosine diphosphate
adenosine + 3 phosphate - Ans adenosine triphosphate
you add 100 micromoles of H+ to pure water. the resulting solution would be _____ (acidic;
basic; neutral) and its pH would _____ (increase; decrease; stay the same) - Ans acidic;
decrease
Which of the following molecules is NOT organic?
- triglyceride
- glycogen
- testosterone
- DNA
- water - Ans water
organic compounds must contain what element? - Ans carbon
two categories of organelles - Ans 1. membranous (ER, nucleus, mitochondria, golgi
complex, lysosomes, peroxisomes)
2. non-membranous (cytoskeleton, ribosomes, cilia/flagella, centrioles/centrosomes, microvilli)
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