What this topic covers
B2: Scaling up has 2 subtopics:
- B2.1 Supplying the cell
- B2.2 The challenges of size
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GCSE OCR Higher Biology · Topic 2 of 6
B2: Scaling up – GCSE OCR Higher Biology revision notes
Choose a subtopic. Transport, differentiation, exchange surfaces and scaling in multicellular organisms. 27 lessons in 2 subtopics.
Revise B2: Scaling up for GCSE OCR Higher Biology, including B2.1 Supplying the cell and B2.2 The challenges of size. 27 lessons across 2 subtopics.
27
Lessons
2
Subtopics
B2: Scaling up lessons by subtopic
27 lessons, grouped by subtopic.
B2.1 Supplying the cell
- Specialised Cells in Animals
- Specialised Cells in Plants
- Linking Structure to Function
- Cell Differentiation: Animal vs Plant Cells
- The Cell Cycle and Preparation for Division
- Mitosis and Cell Division Process
- What are stem cells and where are they found?
- Medical uses and applications of stem cells
- Stem cells in agriculture and conservation
- What is diffusion and what affects its rate?
- Surface area to volume ratio and single-celled organisms
- Exchange surfaces in multicellular organisms
- Understanding Osmosis
- Measuring and Calculating Water Movement
- Graphing Osmosis Results
- Understanding Active Transport and Comparing Cell Transport Methods
- Active Transport in Action: Plants and Animals
B2.2 The challenges of size
- Blood Vessels and Their Functions
- The Heart and Double Circulation
- Heart Structure and Gas Exchange in Lungs
- Components of Blood
- Blood Cell Structure and Function
- Plant Tissues and Their Functions
- The Leaf as a Plant Organ
- Plant Transport System Structure
- Transpiration and Water Movement
- Analysing Plant Transport Data
More in this course
Go back to the full GCSE OCR Higher Biology topic list, or practise this topic with past-paper questions.
Frequently asked questions
What is B2: Scaling up?
Transport, differentiation, exchange surfaces and scaling in multicellular organisms. 27 lessons in 2 subtopics.
What is osmosis?
Osmosis is the diffusion of water through a partially permeable membrane from a dilute solution to a concentrated solution. The Understanding Osmosis notes cover this in full.
What is haemoglobin?
Haemoglobin is an iron-containing protein in red blood cells that binds to oxygen in the lungs and releases it in body tissues. The Components of Blood notes cover this in full.
What are specialised cells?
Specialised cells are cells that have developed specific structures and functions to carry out particular roles in multicellular organisms. The Specialised Cells in Animals notes cover this in full.
What is mitosis?
Mitosis is the cell division process that creates two cells genetically identical to each other and to the original parent cell. The Mitosis and Cell Division Process notes cover this in full.
What is diffusion?
Diffusion is the net movement of particles from high to low concentration. The What is diffusion and what affects its rate? notes cover this in full.
What is plasma and what does it carry?
Plasma is the pale yellow liquid component of blood that makes up about 55% of blood volume. The Components of Blood notes cover this in full.
What is a stem cell?
A stem cell is an undifferentiated cell, one that hasn't specialised yet. The What are stem cells and where are they found? notes cover this in full.
What is active transport?
Active transport is the movement of substances against a concentration gradient, from low to high concentration, using energy from respiration. The Understanding Active Transport and Comparing Cell Transport Methods notes cover this in full.