DAT Biology Exam Solved with Complete Verified Answers
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DAT Biology
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DAT Biology
glycolysis - - exergonic bc releases ATP
still does use ATP
produce 2 ATP, 2 pyruvate, 2 NADH
transmission electron microscope (TEM) - - very magnified
2D image of single bacterial cell
must be very thin CROSS-SECTION of cell
must be DEAD
scanning electron microscope - - 3D image of single b...
DAT Biology Exam Solved with
Complete Verified Answers
competitive inhibition - ✔✔- inhibitor competes directly with the reactant at the active
site - substrate takes the place of the reactant and prevents the reaction from occurring
cofactors - ✔✔- non-protein molecules that assist enzymes in carrying out their function
can be organic (coenzymes) or inorganic (e.g. metal ions)
binds tightly to an enzyme = prosthetic group.
noncompetitive inhibition - ✔✔when an inhibitor binds to the enzyme at a binding site other than
the active site and prevents the enzyme from catalyzing the reaction
clathrin - ✔✔- protein that coats and forms vesicles
- vesicle incorporation into cell membrane during exocytosis and endocytosis
nucleoid region - ✔✔- area within prokaryotic cells that contains its genetic material
irregularly shaped
typically contains the genome of a prokaryote in the form of a double-stranded, circular DNA molecule
region, not a membrane-bound organelle (in contrast to the eukaryotic nucleus)
teichoic acids - ✔✔- on the cell walls of gram-positive bacteria
provide cell wall rigidity
used as recognition and binding sites by bacterial viruses
,pili - ✔✔- cell adhesion (prelude to conjugation)
on bacteria
bridge to connect the "donor" bacteria (which contains the F plasmid that allows for pilus formation) to
a recipient bacteria --> allows for an exchange for genetic material and can introduce genetic variation =
conjugation
glycolysis - ✔✔- exergonic bc releases ATP
still does use ATP
produce 2 ATP, 2 pyruvate, 2 NADH
transmission electron microscope (TEM) - ✔✔- very magnified
2D image of single bacterial cell
must be very thin CROSS-SECTION of cell
must be DEAD
scanning electron microscope - ✔✔- 3D image of single bacterial
cell - requires cells to be DEAD then stained
compound light microscope - ✔✔- stained with colored dye
- what you use in LAB (doesn't magnify enough to see chromosomes)
stereo microscope - ✔✔- LOW magnification
- observe surface of specimen
fluorescent microscope - ✔✔- colorful images by dying
specimen - LIVING observed
notochord - ✔✔- length of cartilage extending along the body, which will become the spine
pharyngeal gill slits - ✔✔- becomes pharynx or gills
endostyle - ✔✔- produces mucus in filter-feeding species
4 main features of chordates - ✔✔1. notochord
protect soft spinal cord
precursor to vertebral column OR remain as cartilaginous structure
2. dorsal hollow nerve cord
- nerve bundle connecting brain with organs + appendages
3. pharyngeal gill slits
connect throat with neck
gills for some animals
4. muscular post-anal tail
nematoda - ✔✔- parasitic
outer layer = cuticle
ex. roundworms
mollusca - ✔✔- open circulatory system
, echinodermata - ✔✔- radial symmetry
open circulatory system
endoskeleton composed of calcium carbonate
invertebrates
coelemate
deuterostome
no specialized execretory system --> diffuse waste out
ex. starfish
platyhelmintes - ✔✔- incomplete digestive system
lack specialized nervous, circulatory, & respiratory systems
invertebrates
O2 & CO2 transport by diffusion
ex. flatworms
cnidaria - ✔✔- incomplete digestive system
- ex. jellyfish, sea anemone, corals
fungi cell wall - ✔✔- glucans
- chitin
bacteria cell wall - ✔✔- peptidoglycans
archaea cell wall - ✔✔- polysaccharides
passive immunity - ✔✔- transfer of antibodies from one person to
another - ex. breastfeeding
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