Lesson Plans Lesson Plans I have compiled various lesson plans and worksheets for units covered in most basic biology classes.
What level of complexity is necessary for life? Aristotle - BC From the C17th microscopists discovered tissues were made of cells Hooke and Leeuwenhoek Research in the C18th and C19th showed that tissues were made of cells and that the cells of a particular tissue had a common structure.
Xavier Bichat An organ is composed of different tissues and several organs can be grouped together as an organ system e. An idea of hierarchy of structure developed: Purkinje Observed a fertilised hen's egg a single cell could develop into an embryo many specialised cells in a compact mass.
C19th botanists showed that plant tissues consist of many different types of cells. The Cell Theory Matthias Schleiden working on plants and Theodor Schwann working on animals came to the same basic conclusion: The cell is the basic unit of living tissue. The cell is an autonomous unit "a citizen" grouped together to form an organism "the society".
Rudolf Virchow a pathologist noted that all cells come from pre-existing cells.
A fact that was particularly clear when studying the growth of tumours. The counter argument to the cell theory developed during the later part of the C19th. Argued that an organism has a structured plan. Cells are connected in an organism sometimes by cytoplasmic bridges plant cell plasmodesmata.
Sherrington and Pavlov neurophysiologists: Cells communicate with one another and they are co-ordinated in their actions. Your donations help towards the cost of maintaining this free service on-line.High School Biology can be a complex subject for some students, because it differs from their previous science classes.
High School Biology emphasizes experimentation and critical thinking, in addition to introducing detailed information about living organisms. IB Biology Notes for Homeostasis & Excreton When body temperature is too low, it is known as hypothermia.
vasoconstricton decreases the diameter of blood . BIOLOGY – HIGHER LEVEL SAMPLE 3 hours Section A Answer any five questions from this section. Each question carries 20 marks. Write your answers in the spaces provided on the examination paper.
Section B Answer any two questions from this section. Each question carries 30 marks. The Group 4: Experimental sciences subjects of the International Baccalaureate Diploma Programme comprise the main scientific emphasis of this internationally recognized high school programme.
They consist of seven courses, five of which are offered at both the Standard Level (SL) and Higher Level (HL): Chemistry, Biology, Physics, Design Technology, and, as of August , Computer Science.
IB biology higher level was probably the HARDEST subject in IB that I STRUGGLED with most in IB and I put the most time and effort into. THESE NOTES were what enabled me to achieve the 7 I had been longing for so much throughout those two years.
The nephron is the functional unit of the kidney, with e ach nephron being comprised of the following components. Bowman’s capsule – first part of the nephron where blood is initially filtered (to form filtrate).