Summary
Summary Cells: Basic Form Of Life
Easy to understand notes on cells and their properties, as well as mitosis. Well organised and well typed. Includes diagrams and definitions and all you need to know.
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Seller
Follow
Content preview
PARTS OF A LIGHT MICROSCOPEFUNCTIONS OF MICROSCOPE
, calculating total magnification:
total magnification = magnification of eyepiece lens X magnification of objective lens
- a cell is the smallest unit of life – mostly made up of proteins, carbohydrates, lipids, nucleic
acids, water
- both plant and animals cells consists of a cell nucleus, cytoplasm and a cell membrane
- not all cells contain a nucleus (bacteria)
prokaryotic cell – cell without a nucleus
eukaryotic cell – cell with a nucleus
- ratio of surface area : volume is large as it facilitates the movement of substances into and
out of the cell, but the volume must be small enough for easy diffusion of substances
- all cells don’t look the same; size, shape and structure change to perform specific functions
[differentiation]
- cells become specialised to perform a specific function [specialisation]
eg: muscle cells contract and relax
nerve cells conduct impulses
glandular cells secrete substances (secretion)
MAIN COMPONENTS OF PLANT AND ANIMAL CELLS
- all cells are made up of protoplasm (the living material in plant and animal cells)
- plant cells also have a non-living part, the cell wall, surrounding the living component,
protoplasm – animal cells don’t have cell walls
- protoplasm consists of the cytoplasm and nucleoplasm in the nucleus
- all organelles occur within the cytoplasm which is enclosed by cell membrane or plasma
membrane
organelle: a membrane-bound structure that is found in the cytoplasm of a cell and that
performs a specific function
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller emmajade. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R150,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now