BMS Test 2 Review

BMS Test 2 Review - BMS Test 2 Chapters 1-4 Cell Division...

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BMS Test 2 Chapters 1-4 Cell Division Chapter 18 pg. 420-424 Chapters 17, 18, 20, 21 Module 1 Page 8- Theories and Concepts (matching) Theory Concept Cell Theory All organisms are composed of cells, and new cells only come from pre-existing cells. Homeostasis The internal environment of an organism stays relatively constant. Genes Organisms contain coded information that dictates their form, function, and behavior. Ecosystem Populations of organisms interact with each other and the physical environment. Evolution All organisms have a common ancestor, but each is adapted to a particular way of life. The Characteristics of Life- (Page 17 1.1) Living things, often called organisms, share common characteristics. Organisms: Have levels of organization—atoms, molecules, cells, tissues, organs, organ systems, organisms, populations, community, ecosystem, and biosphere Take materials and energy from the environment Reproduce Grow and develop Are homeostatic Respond to stimuli Have an evolutionary history and are adapted to a way of life Page 18 (9-12) (9-12 match each description with the correct characteristic of life from the key) Key: a. Life is organized b. Living things reproduce and grow. c. Living things respond to stimuli. d. Living things have an evolutionary history. e. Living things acquire materials and energy. 9. Human heart rate increases when scared. 10. Humans produce only humans. 11. Humans need to eat for building blocks and energy. 12. Similar cells form tissues in the human body.
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Chapter 2 - 4 Macromolecules - Carbs -made up of subunits called monosaccharide - Lipids - molecules that do not dissolve in water -found in cell membranes -Fats- usually animal origin -Oils- usually plant origin - Proteins -made of subunits called amino acids (do-ers in the body) -important for diverse functions in the body, including hormones - Nucleic Acids -made of nucleotides -function in the cell to make proteins - Properties of Water (pg. 40 2.2) -Water is a liquid, instead of a gas, at room temperature -Water heats and freezes slowly, moderating temperatures and allowing bodies to cool by vaporizing water. -Frozen water is less dense than liquid water, so ice floats on water. -Water is cohesive and fills tubular vessels, such as blood vessels. A thin film of water allows the lungs to adhere to the chest wall. -Water is the universal solvent because of its polarity. -Water has a neutral pH. -Acids increase H+ but decrease the pH of water. - Bases decrease H+ but increase the pH of water. Chapter 3 Cell Theory -a cell is the basic unit of life -all living things are made up of cells -new cells arise only from preexisting cells Diffusion vs. Osmosis Diffusion - the random movement of molecules from the area of higher concentration to the area of lower concentration, until they are equally distributed Osmosis - the net movement of water across a semi permeable membrane, from an area of higher concentration to lower concentration -Types of Transport
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This note was uploaded on 02/25/2012 for the course ECO 101 taught by Professor Staff during the Fall '10 term at Texas State.

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BMS Test 2 Review - BMS Test 2 Chapters 1-4 Cell Division...

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