PSU BIO 110 EXAM 2 Questions with
Verified Answers
phospholipid bilayer - ANSWERSWhat are membrane bound organelles seperated by?
Nucleus - ANSWERSprovides genetic information
Nuclear envelope - ANSWERSdouble membrane surrounding nucleus
Nucleolus - ANSWERSgenes that are encoded/transcribed with RNA
Nuclear pore - ANSWERSHow does mRNA leave the nucleus?
Smooth ER - ANSWERSsynthesize lipids
degrade toxins
Rough ER - ANSWERShouses ribosomes
Translation complex rough ER - ANSWERS1. protein N-terminus
2. SRP binds polypeptide SRP and sends to Rough ER
3. Polypeptide inserted into Rough ER
Golgi Body - ANSWERSProcess proteins
Glycosylation - ANSWERSHow are carbs added to protein?
Protein export - ANSWERS1. vesicle docks protein
2. primed for fusion
3. fuse with membrane and release content
Microfilaments - ANSWERSsmallest filaments
made of actin
beads on string
facilitate cellular migration and contract muscles
cell digestion
phagocytosis
Intermediate filaments - ANSWERSthick, cable
support structure and anchor organelles
static
Microtubules - ANSWERSlargest
, hollow tubes with tubulin rows
important in mitosis
Lysosomes - ANSWERSbreak down material within cell
vesicles off plasma membrane fuse with these
Hydrolytic enzymes - ANSWERSsynthesized in inactive site
become activated in lysosome
Vacuoles - ANSWERSstorage of proteins and lipids
holds pigments in plants
Mitochondria - ANSWERSconvert food energy to ATP
have a double membrane (smooth outer, folded inner)
circular DNA
used to be bacteria
maternally inherited
lots in brain and muscles
Protists - ANSWERSsingle celled organisms most of time
autotrophic and heterotrophic
water and land
paraphyletic
Paraphyletic - ANSWERScommon ancestor but doesnt include all groups
Pelmxya - ANSWERSNo ER, No Golgi, No mitochondria
depends on bacteria in cytoplasm
Diplomonads - ANSWERSmitosomes that lack electron transport
cant perform cell respiration
get energy from pathways
flagellum
anaerobic
parasites
Giardia - ANSWERSdiplomonads
intestinal parasite causing beaver fever
contaminated water
attaches to intestinal lining
Parabasalids - ANSWERSanaerobes lacking mitochondria
energy by hydrogenosome
HAVE golgi
flagellum
live in animal guts and sexually trans. parasite
Verified Answers
phospholipid bilayer - ANSWERSWhat are membrane bound organelles seperated by?
Nucleus - ANSWERSprovides genetic information
Nuclear envelope - ANSWERSdouble membrane surrounding nucleus
Nucleolus - ANSWERSgenes that are encoded/transcribed with RNA
Nuclear pore - ANSWERSHow does mRNA leave the nucleus?
Smooth ER - ANSWERSsynthesize lipids
degrade toxins
Rough ER - ANSWERShouses ribosomes
Translation complex rough ER - ANSWERS1. protein N-terminus
2. SRP binds polypeptide SRP and sends to Rough ER
3. Polypeptide inserted into Rough ER
Golgi Body - ANSWERSProcess proteins
Glycosylation - ANSWERSHow are carbs added to protein?
Protein export - ANSWERS1. vesicle docks protein
2. primed for fusion
3. fuse with membrane and release content
Microfilaments - ANSWERSsmallest filaments
made of actin
beads on string
facilitate cellular migration and contract muscles
cell digestion
phagocytosis
Intermediate filaments - ANSWERSthick, cable
support structure and anchor organelles
static
Microtubules - ANSWERSlargest
, hollow tubes with tubulin rows
important in mitosis
Lysosomes - ANSWERSbreak down material within cell
vesicles off plasma membrane fuse with these
Hydrolytic enzymes - ANSWERSsynthesized in inactive site
become activated in lysosome
Vacuoles - ANSWERSstorage of proteins and lipids
holds pigments in plants
Mitochondria - ANSWERSconvert food energy to ATP
have a double membrane (smooth outer, folded inner)
circular DNA
used to be bacteria
maternally inherited
lots in brain and muscles
Protists - ANSWERSsingle celled organisms most of time
autotrophic and heterotrophic
water and land
paraphyletic
Paraphyletic - ANSWERScommon ancestor but doesnt include all groups
Pelmxya - ANSWERSNo ER, No Golgi, No mitochondria
depends on bacteria in cytoplasm
Diplomonads - ANSWERSmitosomes that lack electron transport
cant perform cell respiration
get energy from pathways
flagellum
anaerobic
parasites
Giardia - ANSWERSdiplomonads
intestinal parasite causing beaver fever
contaminated water
attaches to intestinal lining
Parabasalids - ANSWERSanaerobes lacking mitochondria
energy by hydrogenosome
HAVE golgi
flagellum
live in animal guts and sexually trans. parasite
