1.1 Use a light microscope How do we view cells

Essential idea The evolution of multicellular organisms allowed cell specialisation and cell replacement

Understandings, skills, applications Use a light microscope to investigate the structures of cells and tissues, with drawings of cells. Calculate the magnification of drawings and the actual size of structures and ultrastructures shown in drawings and micrographs.

Internal assessment Mandatory lab (assessed???)

Cellular hierarchy Cells – smallest unit of life Tissues – group of cells Organs – groups of tissues Systems – groups of organs Organisms – groups of systems

Mandatory Practicals 6+1 (Paper 3) P1 1.1 Calculation of magnification of drawings, actual size of structures from drawings or micrographs P2 1.4 Estimation of osmolarity in tissues P3 2.5 Investigation of a factor affecting enzyme activity P4 2.9 Separation of photosynthetic pigments by chromatography P5 4 Attempting to create a sealed mesocosm P6 6.4 Monitoring of ventilation at rest and after mild and vigorous exercise P7 9.1 Measurement of transpiration rates using potometers

Use of a light microscope to investigate the structure of cells and tissues, with drawing of cells. Calculation of the magnification of drawings and the actual size of structures and ultrastructures shown in drawings or micrographs. (Practical 1) Microscopes are best learn through experience the below links are primarily for those without access to a microscope. Learn about Microscopes: http://www.wisc-online.com/objects/ViewObject.aspx?ID=BIO905 Virtual microscope: http://www.udel.edu/biology/ketcham/microscope/scope.html Source: https://microbewiki.kenyon.edu/index.php/Dinoflagellata

Units of length in biology

Task: Use the microscope correctly and draw one plant and one animal cell Correctly label the drawing Use the drawing in biology sheet for guidance (g/drive)

Understandings, skills, applications Use a light microscope to investigate the structures of cells and tissues, with drawings of cells. Calculate the magnification of drawings and the actual size of structures and ultrastructures shown in drawings and micrographs.

Homework Complete the size in biology worksheet (G/Drive) Self Study