Monday October 17, 2011

Transcription

1 Monday October 17, 2011 Thanks for the feedback!! Go over cheek and onion cell lab Cell video Homework: Review questions, STSE Questions? The 'Big Picture' handout Ben and John STSE talk Feedback! What can I do to improve this class? Explain concepts more Less microscope work Play more games Less homework More time to work on homework in class More fun things like microscope labs More visual diagrams Talk more in depth about notes What can you do to improve this class? Finish homework try harder Come to class on time 1

2 Cheek Cells Low Magnification High Magnification Onion Cells Low Magnification High Magnification 2

3 Key Concepts o Cells are the of life. o Cell results in the production of many types of specialized cells. o Specialized cells work together to form. o Different tissues perform specific functions related to the type of that they are a part of. The Big Picture o In order for a cell to carry out the functions necessary for life, its must work together. o Similarly, cells must work together in tissues to carry out a specific task. e.g. o Two or more different types of tissues work together to perform a specific task and form organs. e.g. o contain one or more organs, along with other structures, that work together to perform a vital function for the body. e.g. Organ systems work together to make up an _. Plants and Animals Organelles Cells Tissues Organs Organ Systems Multi cellular Organism Stem Cells o Unspecialized cells are called. They can develop into all other types of cells. The type of cell it becomes is influenced by: Environmental conditions: nutrients, temperature Neighbouring cells: compounds released by other cells (hormones ) o Each stem cell contains instructions, in the form of, to become any type of cell. o During the process of differentiation specific genes on the DNA get turned on and others get turned off. o As a result, stem cells begin producing organelles and proteins that they need to carry out a specific function. 3

4 o In animals, stem cells are found in embryos and can differentiate into any type of cell. As the organism matures, its stem cells are called stem cells, which can differentiate into a limited number of types of cells to replace damaged tissue. o In plants, stem cells are called cells. Unlike embryonic stem cells they continually produce new cells throughout the plant s life. These cells are found in growing root and stem tips. Specialized Cells in Animals bone cells fat cells muscle cells red blood cells white blood cells nerve cells photophore cells skin cells sperm cells Contain hemoglobin that carries oxygen in blood Are smooth so that they can easily pass through the blood vessels _ Fit together tightly to cover the outside of the body Protect the cells inside and reduces water loss Collect calcium from food Allow the growth and repair of bones Are arranged in bundles called muscle fibers Can contract which makes the fibers shorter and causes bones to move Can move like an amoeba to engulf bacteria and fight infection Are able to move independently Carry DNA from the male parent to join the egg from the female parent Have a large vacuole in which to store fat molecules How cells store chemical energy Are long, thin, and have many branches Conduct electrical impulses to coordinate body activities Can emit light Are used by animals that are active at night or live deep in the ocean 4

5 Expert Groups Epithelial Dermal Muscle Ground Nervous Vascular Connective Meristematic Teaching Groups Group A Mitch Nicole Jordan Arianna Group B Devon Ben Lisa Jake Group C Brad Hannah Peter Kathleen Epithelial Dermal Muscle Ground Nervous Vascular Connective Meristematic Group D Joseph Brent Zack Miranda Group E Brady John Joshua Kailey Group F Ryan Michael Brianna Luke 5

6 Attachments cheek.webloc imgres.webloc