Summary
Summary Cell Biology | Exam 2 Cell Biology - Histology (AB_1138)
- Course
- Institution
- Book
Summary study book Essential Cell Biology of Bruce Alberts, Karen Hopkins (Chapters 1, 11, 15-18, 20) - ISBN: 9780393680393
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
Essential Cell Biology 5th Edition by Alberts
-
Essential Cell Biology 5th Edition by Alberts
-
COMPLETE TEST BANK: ESSENTIAL CELL BIOLOGY 5TH EDITION ALBERTS [ CONTAIN ANSWER KEY Questions with 100% correct Answer.
Seller
Follow
SummaryLin
Reviews received
Content preview
Cell Biology summary(Cell Biology - Histology exam 2)
1
,Cells & organelles (Chapter 1) 3
Intracellular transport (Chapter 11 p.375-380 + Chapter 15) 4
Extracellular matrix (Chapter 20 p.691-708) 9
Cell cycle (Chapter 18) 11
Cytoskeleton (Chapter 17) 14
Cell communication (Chapter 16) 17
Signal transduction 19
2
, Cells & organelles (Chapter 1)
- Characteristics of the cell:
- Is essential building block of all life on earth
- Has limiting membrane (inside/outside compartments)
- Contains biomolecules (e.g. protein/RNA/DNA)
- Is autonomous unit in performing a function
- Can respond+adapt to stimuli
- Can (often) reproduce itself
- Cell types:
- Bacteria — no nucleus/other organelles
- Archaea — no nucleus, often extremophiles (= can survive under extreme
circumstances where other cells cannot)
- Eukaryotes — nucleus + other organelles, sometimes multicellular life forms (human/
yeast/maize)
- Microscopy:
- Light microscopes — use visible light to illuminate specimens; up to 200 nm
> Properties of light (speci cally its wavelength) limit neness of detail
> Investigation of plant+animal tissues with light microscope led to cell theory: all
living cells are formed by growth+division of existing cells
> Sample often has to be xed -> embedded -> sliced -> stained
> Possibility of living cells as samples
- Fluorescence microscopes — type of LM that use sophisticated methods of
illumination and electronic image processing to see uorescently labeled cell
components in much ner detail; up to 20 nm
> Fluorescent dyes used for staining
> Illuminating light is passed through 2 lters:
1. Filters light before reaching specimen, passing only wavelengths that
excite particular uorescent dye
2. Blocks out this light and passes only those wavelengths emitted when
dye uoresces
- Electron microscopes — use beams of electrons as source of illumination; up to 0,2
nm
> Electrons have much shorter wavelength -> ner details
> Similar preparation of cells as LM, but much thinner slices, no possibility of
living cells (vacuum), stained with electron-dense heavy metals, and time-
consuming method
- Transmission EM — used to look at thin sections of tissue; similar to LM, but
transmits beam of electrons through the sample instead of light
- Scanning EM — used to look at surface detail of cells and other structures;
scatters electrons o the sample surface
> Compartments:
- Condenser — controls beam of electrons / spotsize
- Objective — focuses image
- Wobbler — moves specimen in focal plane
- Apertures — lter out scattered electrons
3
fi fl fffi fififl fl fi fi fi
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 SummaryLin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.98. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
52510 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now