Eukaryote - correct answer. single celled organism
Paramecium - correct answer. distant ancestor of our cells, limited by # of
biomolecular machines within itself
What does a paramecium use cilia for? - correct answer. to move
What was the precursor to our kidneys? - correct answer. contractile vacuole
SEM(Scanning Electron Microscopy) - correct answer. cannot view living cells
What can parameciums o as a defense technique against predators? - correct answer.
they can shed their cilia
Cells "walk" with ______ and ________ - correct answer. lamelipodium an
fillapodium
How do you distinguish the front and the back of the cell? - correct answer. the front
has lamelipodium and filapodium, the back has retraction fibers
Focus - correct answer. clump of cancer cells
Phase Contrast Microscopy - correct answer. can watch living cells move, light
microscopy
Retraction Fiber - correct answer. the first lamelipodia, stretches until it breaks and
then releases cytoplasm and is reabsorbed into the cell
, How can a cell stretch their parts so extensively? - correct answer. elasticity and the
plasma membrane
Normal cells are anchorage-_______________ - correct answer. dependent
Cancer cells are anchorage-________________ - correct answer. independent
Anchorage-dependent - correct answer. uses contact inhibition to stop growth
Anchorage-indepedent - correct answer. will keep growing forever given fresh
nutrients and space
Limitations of Cell Culture technique - correct answer. 1) not all cells will grow in a
culture
2) cells lose their histotype in vivoshape and 3d structure of tissue is changed
3)metabolism likely changes
Controlled Experiment - correct answer. scientists manipulate only one of the
variables/factors being tested
Comparative Experiment - correct answer. data is gathered from different sources
and is not manipulated and other variables are held constant
Cell size is limited by________ - correct answer. the diffusion of gas and
nutrients/waste
What does an extant version of a prokaryotic cell have? - correct answer.
cytoplasm, ribosomes, nucleoid, plasma membrane, cell wall and capsule
Endomembrane theory - correct answer. an infolded plasma membrane attached to
a chromosome in an ancestral prokaryote may have led to formation of plasma
membrane. endocytosis would have needed to occur
What was the advantage of losing the cell wall? - correct answer. allowed for
flexibility of the cell
What is the cytoskeleton composed of? - correct answer. actin microtubules
Do we know where the cytoskeleton came from? - correct answer. NO. genes
encoded not found in bacteria or archaea
The first true eukaryote likely possessed: - correct answer. 1) cytoskeleton
2)nuclear envelope
3) may have had an associated endoplasmic reticulum and golgi apparatus
4)one or more flagella possibly
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 techgrades. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
