ASU BIO 181 EXAM 1 ACTUAL TEST QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) ALREADY GRADED A+
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Course
ASU BIO 181
Institution
ASU BIO 181
ASU BIO 181 EXAM 1 ACTUAL TEST QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) ALREADY GRADED A+
facilitated diffusion uses a channel to let components move down their concentration gradient. - Answer-true
T/F a single pass trans-membrane protein that is an alpha helix...
ASU BIO 181 EXAM 1 ACTUAL TEST
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES
(VERIFIED ANSWERS) ALREADY
GRADED A+
facilitated diffusion uses a channel to let components move down their concentration
gradient. - Answer-true
T/F a single pass trans-membrane protein that is an alpha helix can make a channel. -
Answer-false
when a vesicle fuses with the plasma membrane the contents of the lumen of the
vesicle are - Answer-ligands that are used in cell communication
T/F the ER is contiguous with the golgi apparatus - Answer-false
amino acids can be largely subdivided into groups. what are the two groups - Answer-
hydrophobic and hydrophlic
what are the orphaned organelles orphaned from? - Answer-they are mitochrondria and
chloroplast and they orphaned from the endomembrane system
what is the difference between a single pass transmembrane protein and a 7 pass
transmembrane protein? - Answer-single is singular protein that passes once through
the bilayer and cannot create ion channel. a 7 passes through the bilayer 7 times
creating channels for ion passage.
for protein to enter the endoplasmic reticulum as part of the endoplasmic reticulum's
lumen or part of the endoplasmic reticulum membrane: - Answer-a ribosome binds to
the mRNA and a short stretch of protein is synthesized that contains a signal sequence.
we are made up of ____ percent water - Answer-50-70
what is the difference between a triglyceride and a phospholipid? - Answer-triglyceride
has 3 fatty acids and phospholipid has 2
T/F the ER is contiguous with the nuclear envelope - Answer-true
, what are the functions of a membrane? - Answer-cell protection and controlling cell
movement
T/F its a simple matter (ie thermodynamically) for vesicle to form from the endoplasmic
reticulum. - Answer-false
is cholesterol good or bad to have in biological membranes - Answer-good
the plasma membrane gets new lipids from - Answer-none of the above
consider the geography of cells. Actin filaments are present in the cell's ____ and the
microtubules are present in the cell's - Answer-cortex
T/F chromosomes are made out of Euchromatin - Answer-false
Where is the histone H1 found? - Answer-they are found in eukaryotic cell nuclei
T/F the diameter of an intermediate filament is 25 nm. - Answer-false
T/F the actin filament system is present in the nucleus - Answer-false
T/F to get into the nucleus a component has to have the correct signal sequence and
pass through a nuclear pore. - Answer-True
which cytoskeleton filament system lines the inside of the nucleus to protect it? -
Answer-microtublues
T/F cilia and microvilli contain a similar number of parallel actin filaments - Answer-false
T/F naked DNA does not exist in nature of parallel actin filaments - Answer-false
T/F naked DNA does not exist in Nature but scientists can make naked DNA in a test
tube. - Answer-true
what does the nucleosomal core have in it (ie the basketball like structure on the
slides)? - Answer-histones
T/F molecular motor use ATP as the energy source to power the molecular motor. -
Answer-true
T/F the actin filament system extends outside of the cell - Answer-false
T/F heterochromatin does not exist in interphase nuclei - Answer-false
T/F many chemotherapy drugs act by arresting the cell in m phase of the cell cycle. -
Answer-true
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