2. Group activity-(CCD Chart)- Ch. 3.1-3.2 (20)

3. Notes- Overview of Cells (30)

5. Reading Quiz Tuesday

6. Ch. 1 Test Remediation's- Due Friday ESLRs Addressed: 1. + Citizenship 2. + relationships 3. Problem Solvers 4. Effective communicators Today’ objectives: Name the 4 elements that make up the bulk of living matter. List several trace elements. Define a generalized cell.

7. Review- Cell Discovery Robert Hooke (1600’s) Cork Plant tissue Cube-like structures, reminder of “cells” at a monastery Cells- smallest unit (or building block) of all living things Human body- trillions of cells

8. Robert Hooke

9. Overview of the Cellular Basis of Cells (Ch. 3.1) Chemical makeup of cells; Primarily made up of4 elements Carbon Oxygen Hydrogen Nitrogen

10. Overview of the Cellular Basis of Cells Remaining part of cell is made up of several trace elements… Calcium Iron Iodine Sodium Potassium

11. Trace Elements and their cellular functions Calcium- needed for blood clotting Iron- makes hemoglobin which carries oxygen in the blood Iodine- required to make a thyroid hormone that controls metabolism Metals (Ca, Na, and K) can carry an electric charge when in their ionic form= electrolytes Na and K essential for transmission of nerve impulses in muscle contraction

12. Cell Facts Water- makes up about 60% of a cell!!! Cells are constantly bathed in interstitial fluid (dilute saltwater solution), derived from the blood. All chemical exchanges (between blood and cell) are made through the interstitial fluid.

13. Vary in length… 2 micrometers- over 3 feet (nerve cells) Structure reflects function Cell Facts

14. Anatomy of the Generalized Cell (Ch. 3.2) Generalized Cell- typical features of all cells. 3 Main features of most cells: Nucleus- (control-center, “headquarters”, contains genetic material) Plasma membrane- (fragile barrier that contains the cells contents and separates the them from the surrounding environment) Cytoplasm- (the material outside the nucleus and inside the plasma membrane)

15. Generalized Cell

16. Exit Quiz What are the 4 primary elements that make up a cell?. (4pts) What is the name of the fluid that cells are bathed in? (1pt) List at least 4 trace elements? (4pts) What are the 3 main features of a cell? (3 pts)