HW #1 - AP Biology Period 4 Nguyen Liem AP Bio HW#1(090909...

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AP Biology Period - 4 Nguyen, Liem 9/8/09 AP Bio HW #1 (090909): Chapter 1 Instruction: Answer all the 10 assignments. Type all answers use Font (Times New Roman) size 12 and use MS WORD. Retain electronic files. Print a hardcopy and turn in by the due date. Each Homework Assignment must follow the following format Example: Homework #1 (090909): Chapter 1 (due Wednesday 090909 ) (30 points) 1. Briefly describe the unifying themes that characterize the biological sciences. - the cell: basic units of structure/function - heritable information: encoded in nucleotide sequence of DNA - emergent properties of biological systems: organization where each step upward in level, system properties emerges - regulation: maintains steady state for internal factors (body temp.) - interaction with the environment: organisms exchange materials/energy with surroundings - energy and life: energy for work, work for life - unity and diversity: diverse, but have unity through universal genetic code - evolution: adaptations to environment change species over time - structure and function: correlated at all levels of biological organization - scientific inquiry: observe, hypothesis, test - science, technology, and society: all goal-oriented Cells have structure, function, and contain DNA. Levels interact in biological organization, allowing all living things maintain homeostasis, interact with environment, use energy to live, and are diverse, united through genetic code. As a group, we evolve with structures needed to function. Through scientific inquiry, we understand more about society. 2. Diagram the hierarchy of structural levels in biological organization. - (1) Biosphere: consists of all environments on Earth inhabited by life. - (2) Ecosystems: consists of all living things and nonliving components - (3) Communities: array of organisms in an ecosystem\ - (4) Populations: individuals of a species living within bounds of an area - (5) Organisms: individual living things - (6) Organs/organ systems: body part made of 2 or more tissues - (7) Tissues: group of similar cells - (8) Cells: life’s fundamental unit of structure and function - (9) Organelles: functional components that make up cells
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- (10) Molecules: chemical structure made of atoms The biosphere has ecosystems that have living/nonliving things. Array of organisms of ecosystem are communities, and all individuals of a species of communities are populations. Individuals are called organisms that have organs/organ systems. Organs are made of tissues composed of cells. Cells have organelles made of molecules. 3. Describe the two major dynamic processes of any ecosystem. - 2 major dynamic processes: a. (1) cycling of nutrients: minerals acquired by plants returned to soil by microorganisms b. (2) the flow of energy from sunlight to producers from consumer: producers convert energy of light to chemical, consumers feed on producers and others for energy One major dynamic process of ecosystem are cycling of nutrients, where
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HW #1 - AP Biology Period 4 Nguyen Liem AP Bio HW#1(090909...

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