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CLEMSON BIOL 2220 EXAM 1 (ACTUAL / ) QUESTIONS
WITH VERIFIED CORRECT ANSWERS UPDATE| CERTIFIED
QUALITY
what role do proteins play in living systems? - ---Answers--- --structural -regulatory (signalling) -contractive(movement) -immunological(antibodies) -carrier(hemoglobin) -catalytic(enzymes)
denaturation of enzymes - ---Answers----when an enzyme loses its 3D structure
denaturation of functional proteins - ---Answers----easily denatured
denaturation of structural proteins - ---Answers----do not denature easily
DNA - ---Answers----in nucleus of cell -genetic material -contains genes -codes for the production of proteins indirectly 1 / 3
-sugar is deoxyribose -nucleotides
RNA - ---Answers----directly codes for nucleotides -single stranded -ribose -slightly different nucleotide sequence
cell theory - ---Answers-----cell is structural functional unit of life -activity of organism is combined results of the cell -activity of each individual cell depends on sub cellular composition -cells come from other cells
ATP - ---Answers----amine bound to phosphate in which 2 additional phosphates have been added
fluid mosaic model - ---Answers----proteins are impeded in the plasma membrane and float around "fluidly"
active transport - ---Answers----requires energy -low concentration to high concentration -requires carrier protein
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passive transport - ---Answers----does not require energy high to low concentration
factors affecting plasma membrane function - ---Answers---- molecular size of molecules -solubility -ionic charge of particles
diffusion - ---Answers----passive movement of a substance for an area of high concentration to an area of low concentration -dependent on molecular size and temperature
facilitated diffusion - ---Answers----involves carrier or channel protein
osmosis - ---Answers----diffusion of things in water
filtration - ---Answers----movement of particles across a selectively permeable membrane
tonicity - ---Answers----concentration -hypo -hyper -isotonic
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