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Dental Admissions test biology Miscellanous Questions with 100% correct answers
Dental Admissions test biology Miscellanous Questions with 100% correct answers
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Dental Admissions test biologyMiscellaneous
ingestion -✅✅-aquisition of food
assimilation - ✅✅-building of new tissues from digested food
glucose + fructose = - ✅✅-sucrose
glucose + galctose= - ✅✅-lactose
glucose +glucose = - ✅✅-maltose
what are the three types of dissachrides? - ✅✅-glycogen (energy storage in
animals), starch (energy storage in plants), cellulose (polymer of beta glucose
structural component, (chitin (like cellulose, but glucose has a nitrogen/structural
molecules)
where is chitin found? - ✅✅-fungi, exoskeleton of insects, arthropods, and
mollusks
what do enzymes do? - ✅✅ -they lower activation energy and increase the rate of
the reaction. Does not affect the overall E.
competitive inhibitors -✅✅-compete with substrate for binding an active site; can
be overcome by adding more substrate; v max not affected
noncompetitive inhibitors - ✅✅-bind at allosteric site; diminshing vmax
holoenzyme - ✅✅-union of cofactor and apoenzyme
apoenyzme - ✅✅-a protein portion of an enzyme, inactive without a cofactor
cooperativity - ✅✅-enzyme more receptive to additional substrate after one
substrate molecule attaches to an active site
what is an example of cooperatvity? - ✅✅-hemoglobin is more capable of binding
to oxygen after already binding to one
prokaryotes - ✅✅
-bacteria,cell wall, nuleoid region-- (naked dna), ribosomes (not
membrane bound)(70S and 30S ) flagella not of microtubules
, fungi and plants both have -✅✅-cell wall, nucleus, membrane bound organelles
Eukaryotes contain what inside their nucleaus - ✅✅-nucleolus- components of
DNA in the process of manufacturing components of ribosomes
chromatin - ✅✅-the normal form of DNA, spread out in a threadlike matrix
rough er - ✅✅-creates glycoproteins by attaching polysaccharides to polypeptides
smooth er - ✅✅-synthesis of lipids and hormones for export (liver)
golgi appratus - ✅✅-modify (glycosylation), and package proteins and lipids into
vessicles
centrioles - ✅✅-microtubule involved in spindle organization during cell division/
No membrane
✅✅-EUKARYOTIC, chromosomes where spindle fibers attach
centrosomes -
lysosome - ✅✅-membrane bound, involved in ingestion/ hydrolytic enzymes. LOw
pH- inactive in cytosol and NOT IN PLANT CELLs
In plant cells, this modifies the by products of photo respiration - ✅✅-peroxisomes
this breakes down, H2O2, fatty acids, and amino acids - ✅✅-peroxisomes
this structure is common in liver and kidney cells - ✅✅-peroxisomes
✅✅
this organelle exhibits the pattern of maternal inheritance and carries out aerobic
respiration - -mitochondria
this structure carries out photosynthesis - ✅✅-chloroplasts
✅✅
Name of the order of the three items that compose the cytoskeleton -
-microtubules<intermediate filiaments< microfilaments
This item is found in spindle apparatus and flagella - ✅✅-microtubules
✅✅-int. filaments
this maintains cell shape -
this is made of actin - ✅✅-microfilaments
✅✅
this is involved in motility, and found in muscle cells and phagocytes -
-microfilaments
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