100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
OCRA ALevel Biology Revision + Summary Notes. For OCRA AS exams and OCRA ALevel exams. For Paper 1, 2, 3. Modules 2, 3, 4, 5, 6 all featured.. £6.48   Add to cart
Quickly navigate to
Preview
  2.  
  3. OCR
  4.  
  5. Biology A
  6.  
  7. Module 2 Basic Components of living systems

Summary

OCRA ALevel Biology Revision + Summary Notes. For OCRA AS exams and OCRA ALevel exams. For Paper 1, 2, 3. Modules 2, 3, 4, 5, 6 all featured..

 3 views  0 purchase
  • Institution
  • OCR

OCR A Depth and Breath in Biology. Paper 1, 2, 3. Module 2, 3, 4, 5, 6. OCRA A Level Modules and OCRA Biology AS Module 2.2 Basic components of living systems, 2.3 Biological molecules, 2.4 Enzymes, 2.5 Cell division, 2.6 Cell division, Module 3 3.1 Exchange and Transport, 3.2 Transport in animal...

[Show more]

Preview 1 out of 10  pages

Document information

  • September 5, 2024
  • 10
  • 2024/2025
  • Summary

Subjects

Written for

All documents for this subject (2)

Seller

avatar-seller
ariel3

Content preview

Basic components of living systems

2.1 The use of microscopy to observe and investigate different types of cell

Light Microscope: A compound light microscope has two lenses- the objective
lens placed near the specimen, and an eyepiece objective lens through which
the specimen is viewed through. The objective lens produces a magnified image,
which is magnified again by the eyepiece lens.

Rules to a scientific drawing:
➔ Title
➔ State magnification
➔ Use a sharp pencil
➔ Use at least 50% of the paper
➔ Do not shade
➔ Label lines drawn with ruler and no arrow

2.2 Use of magnification formula
Magnification- How many times
larger the image is than the
actual size of the object being
observed.

Resolution- the ability to
distinguish between two points

Calibration
Eyepiece graticule is a glass disc marked with a scale 1-100 with no units
Calibrating x4 :

1. Put the stage micrometre in place and the eyepiece graticule in the
eyepiece
2. Get the scale on the stage micrometre in clear focus
3.Align the micrometre scale with the scale in the eyepiece and take a reading
from the two scales


2.3 The preparation and examination of microscope slides in light
microscopes

Sample Preparation:
Dry Mount Viewing hair, pollen, dust and parts of insect and muscle
tissue.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

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 ariel3. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £6.48. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

66475 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£6.48
  • (0)
  Add to cart