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Concept based learning Free
Concepts in learning provide a support to extend and deepen student understanding. They provide a structure to help students and teachers alike make connections between different areas of Biology and...
ATL in Biology
ORF activity
The concept of Open Reading Frames seems quite complex at first, but this activity with it's practial approach helps students to understand the idea that reading DNA from a position one base later will...
ATL in Biology
Key terms - Cells topic
1.1 Introduction to cells. (navigate the cards using the buttons in the box) 1.2 Ultrastructure of cells 1.3 Membrane structure 1.4 Membrane transport 1.5 The origin of cells 1.6 Cell Division...
ATL in Biology
Mitotic index - model answers
Questions The rate of cell division is faster in cancerous tissues than in normal tissue. The data shows mitotic index values in all the cancerous samples are higher (more than 15% higher) than the...
ATL in Biology
IB style questions - hormones & menstrual cycle model answers
The document below shows suggested model answers to the questions IB style questions on hormones of the menstrual cycle found on this page Hormones and the menstrual cycle Please notes these are suggestions,...
ATL in Biology
How do we know structure - model answers
The document below shows suggested model answers to the questions on the the How do we know about membrane structure? worksheet found on this page Falsification of membrane structures Remember access...
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ATL in Biology
Falsification of membrane structures Free
The accepted model of membrane structure today is the fluid-mosaic model but this has not always been so. Since 1900 there have been a series of hypothetical structures proposed and tested. The evidence...
ATL in Biology
Blood vessels - model answers
The document below shows suggested model answers to the questions on the the Artery and vein worksheet found on this page Blood and Blood Vessels. Please notes these are suggestions, there are other...
ATL in Biology
Cell biology test - mark scheme
I Ribosome II Rough endoplasmic reticulum III Chloroplast IV Lysosome I. Reduces permeability of the membrane to hydrophilic ions II. Acts as a channel for ion movement III. It is amphipathic IV. Reduces...
ATL in Biology
Membrane structure - QQ answers
1. Which of the definitions best describes an Integral Protein 2. Name a steroid present in the plasma membranes of animal cells that affects membrane fluidity. 3. Concentration Gradient is best described...