Exam 2 Study Guide
BI 111 Study Guide
Exam #1: Some of Ch. 4, the brief discussion summarizing Ch. 6, and Chptrs. 5, 7, and 8
HOW TO USE THIS STUDY GUIDE: You should be able to provide fairly detailed answers to the following questions and directions… this means you will probably use more room than is provided by the small spaces between them. Some of those answers will include things I talked about in lecture, as well as concepts that are explained by your textbook. You may want to reformat the guide on the computer before you print it, leaving yourself more room to write or type, or transcribe the questions to other sheets of paper.
Chapter Four: The Working Units of Life
1. Describe the characteristics and functions of mitochondria, chloroplasts, and peroxisomes. Answer the “big picture” questions: Why do we breathe? How do plants get larger (gain dry mass, more specifically)?
2. Describe the functions of the cytoskeleton. Specifically, describe microtubules, intermediate filaments, and microfilaments.
3. Discuss cell wall composition among various organisms.
4. Describe the functions of the extracellular matrix of animal cells. What are collagen, fibronectin, and integrins, and how do they interact?
5. What are plasmodesmata, tight junctions, gap junctions, and desmosomes, and where are they located?
Chapter Five: Cell Membranes and Signaling
1. Discuss the composition of the cell membrane, and how membrane molecules may differ among organisms, within an organism, and even within a cell.
2. What factors affect membrane fluidity, and how? Why is the cell membrane referred to as a “fluid matrix”?
3. Describe the properties of peripheral and integral membrane proteins and discuss membrane protein movement within the membrane.
4. What are recognition sites, and how do they work?
5. Membranes are selectively permeable… what can pass easily via simple diffusion, and why?
6. Define passive transport, and simple
Exam #1: Some of Ch. 4, the brief discussion summarizing Ch. 6, and Chptrs. 5, 7, and 8
HOW TO USE THIS STUDY GUIDE: You should be able to provide fairly detailed answers to the following questions and directions… this means you will probably use more room than is provided by the small spaces between them. Some of those answers will include things I talked about in lecture, as well as concepts that are explained by your textbook. You may want to reformat the guide on the computer before you print it, leaving yourself more room to write or type, or transcribe the questions to other sheets of paper.
Chapter Four: The Working Units of Life
1. Describe the characteristics and functions of mitochondria, chloroplasts, and peroxisomes. Answer the “big picture” questions: Why do we breathe? How do plants get larger (gain dry mass, more specifically)?
2. Describe the functions of the cytoskeleton. Specifically, describe microtubules, intermediate filaments, and microfilaments.
3. Discuss cell wall composition among various organisms.
4. Describe the functions of the extracellular matrix of animal cells. What are collagen, fibronectin, and integrins, and how do they interact?
5. What are plasmodesmata, tight junctions, gap junctions, and desmosomes, and where are they located?
Chapter Five: Cell Membranes and Signaling
1. Discuss the composition of the cell membrane, and how membrane molecules may differ among organisms, within an organism, and even within a cell.
2. What factors affect membrane fluidity, and how? Why is the cell membrane referred to as a “fluid matrix”?
3. Describe the properties of peripheral and integral membrane proteins and discuss membrane protein movement within the membrane.
4. What are recognition sites, and how do they work?
5. Membranes are selectively permeable… what can pass easily via simple diffusion, and why?
6. Define passive transport, and simple