Orderly and clear summary of chapter 1 part 1 what is discussed during the cell biology lectures. It is a summary from the book "Essential Cell Biology " With this summary you will save a lot of time. I passed this course with a 7,5. Good luck :)
COMPLETE TEST BANK: ESSENTIAL CELL BIOLOGY 5TH EDITION ALBERTS [ CONTAIN ANSWER KEY Questions with 100% correct Answer.
All for this textbook (62)
Written for
Vrije Universiteit Amsterdam (VU)
Biomedical Sciences
Histology & cell biology
All documents for this subject (16)
3
reviews
By: semlunahazes • 4 year ago
By: idilsafi313 • 4 year ago
By: ariofatehi • 4 year ago
Seller
Follow
biomedicalsciencesvu
Reviews received
Content preview
Summary Cell Biology – Chapter 1
Unity and diversity of cells
Three essential features of a cell () is not what all cells have.
Membrane
(DNA)
(RNA
(Divide)
Cytosol
Cytoskeleton
(Mitochondria)
Cells are the fundamental units of life.
Cell biology is the study of cells and their structure, function and behavior
Cells vary enormously in size, shape and chemical requirements (e.g some require
oxygen to live, for other is gas deadly).
These differences often reflect differences in cell function
Although cells vary from outside, they are fundamentally similar inside.
In all organism’s genetic information is carried in DNA molecules.
Cell genome; entire sequence of nucleotides in DNA, it provides a genetic program
that instructs the cell how to behave.
Central dogma; flow of information form DNA RNA protein (these are
biomolecules)
All present-day cells evolved from the same ancestral cell
Copying is not always perfect, they are corrupted by mutations that change the DNA.
variation in cells comes from this.
Cells under the microscope
2 types of microscopes
1. Light microscopes; using beams of visible light through the sample to
illuminate (verlichten) specimens (exemplaren) moving cells
2. Electron microscopes; using beams of electrons through the sample NOT
moving cells/ wet cells
o Highest magnification (vergroting) and best resolution
3. Fluorescence microscopes; use sophisticated (geavanceerde) methods of
illumination and electronic image processing to see fluorescently labeled cell
components. moving and fixed (vaste) cells
Advantage of EM over LM;
Superior resolution
Visualize the whole cell, not only a fluorescent probe
Huge magnification range
Disadvantage of EM compared over LM
Requires fixation of cells (operates under vacuum, the small pieces otherwise
go through the environment)
Only small pieces of tissue can be imaged
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 biomedicalsciencesvu. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.21. You're not tied to anything after your purchase.
