MCAT UPDATED TEST BANK(COMPLETE QUESTIONS AND ANSWERS)
18 views 0 purchase
Course
MCAT
Institution
MCAT
MCAT UPDATED TEST BANK(COMPLETE QUESTIONS AND ANSWERS)
Cell Theory Correct Answer: -all living things composed of cells
-cell=basic functional unit of life
-cells from other cells only
-cells have DNA (parent-->daughter cells)
magnification Correct Answer: increase size
resolution ...
mcat updated test bankcomplete questions and answers
Written for
MCAT
All documents for this subject (807)
Seller
Follow
Classroom
Reviews received
Content preview
MCAT UPDATED TEST BANK(COMPLETE QUESTIONS AND
ANSWERS)
Cell Theory Correct Answer: -all living things composed of cells
-cell=basic functional unit of life
-cells from other cells only
-cells have DNA (parent-->daughter cells)
magnification Correct Answer: increase size
resolution Correct Answer: differentiate close objects
hematoxylin Correct Answer: -commonly used dye
-shows nucleic acids (DNA,RNA)
how does the dye hematoxylin show nucleic acids? Correct Answer: binds to the negative sugar-
phosphate backbone
phase contrast microscope Correct Answer: -living organisms
-differences in refractive indices among different subcellular structures
electron microscope Correct Answer: -atomic level
-samples must be sliced thinly and impregnated with heavy metals for contrast
prokaryotes Correct Answer: before nuclei (no nuclei)
eukaryotes Correct Answer: after nuclei
types of prokaryotes Correct Answer: bacteria and blue-green algae
prokaryote characteristics Correct Answer: -unicellular
-no nucleus or membrane bound organelles
-cell wall in all
-ability to carry other pieces of DNA
What type of genetic material is present within prokaryotes? Correct Answer: -single circle molecule of
DNA
,-within nucleoid region
plasmids Correct Answer: -circular DNA
-small
-few genes
-replicate independently
cocci Correct Answer: spherical bacteria
bacilli Correct Answer: rod-shaped bacteria
how do antibacterials work? Correct Answer: tend to attack bacterial specific structures
Eukaryote characteristics Correct Answer: -protists, fungi, plants, and animals
-cell walls in fungi and plants
-nucleus
-unicellular or multicellular
golgi purpose Correct Answer: -receives from smooth ER
-repackages to cell surface via secretory vescicles
lysosomes Correct Answer: -'garbage dumps'
-receives from endosomes
-uses hydrolytic enzymes at lowered pH
-break down materials
-remove old cell components and replace
-can cause autolysis
autolysis Correct Answer: cell suicide
mitochondria Correct Answer: powerhouse
-2 layers
-semi-autonomous
-inherited only from the mother
2 layers of mitochondria Correct Answer: outer-walls
inner-electron transport chain
what is the purpose of cristae on mitochondria? Correct Answer: increase surface area
semi-autonomous Correct Answer: own genes
-replicate independently
types of microbodies Correct Answer: -peroxisomes
-glyoxysomes
animal cell wall composition Correct Answer: no cell wall!!
centrioles Correct Answer: -specialized microtubules
-spindle formation
-no membrane
-in animals not in plants
microfilaments Correct Answer: -rods of actin
-muscular contraction with interaction with myosin
-movement of materials within cell membrane
microtubules Correct Answer: -hollow
-polymers of tubulin
-throughout cell
-transport and structural support
-structural basis for cilia and flagella
intermediate fillaments Correct Answer: integrity of cytoskeleton
osmosis Correct Answer: -water movement
-low solute to high solute
hypotonic solution Correct Answer: -solute inside of cell greater than surrounding
-causes cell to swell
hypertonic solution Correct Answer: -solute inside of cell less than surrounding
What types of materials are impermeable to membrane? Correct Answer: -large
-polar
-charged
pinocytosis Correct Answer: endocytosis of fluids and small particles
phagocytosis Correct Answer: ingestion of large molecules
Molecules through simple diffusion Correct Answer: -small
-nonpolar
-e.g. O2, CO2
Molecules through facilitated diffusion Correct Answer: -large
-nonpolar
-e.g. glucose
Molecules through active transport Correct Answer: -polar
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Classroom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.