BIOLOGY 1A03 Chapter 3: Textbook and Class Notes Collaborated - Week 1 - Unit 1 - Chapter 3 Bio 1A03

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Xudong Zhu

Document Summary

The theory of chemical evolution can be broken into four steps. Eg/ carbonic anhydrase molecules in red blood cells move carbon dioxide from cells back to lungs where it can be breathed out. Eg/ create structures such as fingernails and hair. Eg/ membranes of red blood cells have structural proteins that connect to structural proteins inside the cell itself. Structural proteins keep the cells flexible and in their normal shape: transport proteins are responsible for allowing particular molecules to enter or exit cells, and for carrying specific compounds throughout the body. Signaling; act as signals that help coordinate the activities of many cells. Signaling; receive chemical signals from outside cell and initiate response. Structure; provide support for cells and tissues from structures such as hair, feathers, cocoons and spider webs. Transport; move substances across cell membrane and throughout body. Stanley miller"s experiment miller spark-discharge experiment; 1953.