Bio Sci 93: Midterm 1 study guide Exam Questions with Revised Correct Detailed Answers with Rationales Guaranteed Pass

Bio Sci 93: Midterm 1 study guide Exam Questions with Revised Correct Detailed Answers with Rationales Guaranteed Pass 1. Order 2. Evolutionary adaptation 3. Regulation 4. Energy processing 5. Growth and development 6. Response to the enviroment 7. Reproduction - What are the properties of life? What are emergent properties in order from smallest to biggest? - 1. Molecules 2. Organelles 3. Cells 4. Tissues 5. Organs 6. Organisms 2 | P a g e Katelyn Whitman© 2025, All Rights Reserved. 7. Populations 8. Communities 9. Ecosystems 10. The Biosphere Cells are... - an organisms basic unit of structure and function True or false: The cell is the LOWEST level of structure capable of performing all the activities of life - True What do ALL cells share in common? - 1. Are enclosed by a membrane 2. Use DNA as genetic information All life is based on ________ information - heritable Do all forms of life use the SAME genetic code? - Yes, we all have the same genetic code, although different genes are expressed differently What does it mean if organisms are open systems? - 1. They exchange energy and materials with surroundings 2. The energy exchange involves transformation of energy from one form to another What is an example of structure fits function ("form fits function")? - Bird wing-structure or rabbits ears and homeostasis What is the structural organization of cells? - 1. Atoms (O,H,C) which are the foundation 2. Molecules (lipids, proteins, etc) which are formed by combinations of atoms 3 | P a g e Katelyn Whitman© 2025, All Rights Reserved. 3. Cells, which are formed by combinations of molecules Conversions - Remember: 1m = 1000mm 1mm = 1000 micrometer 1 micrometer = 1000 nm Important: 1 nm = 1000 picometer 0.1 nm = 1 Angstrom Elements cannot... - be broken down into other substances How many natural elements are there? - 92 natural elements How many elements are essential for life? - 25 essential elements How much percent of living matter is made from the 4 elements of C, O, N, H? - 96% of living matter What are 4 trace elements? - Fe - Iron I - Iodine Zn- Zinc Cu - Copper What are atoms? - the smallest units of chemical elements 4 | P a g e Katelyn Whitman© 2025, All Rights Reserved. What are molecules? - Two or more atoms combined What are compounds? - molecule made up of 2 or more elements combined in a fixed ratio NaCl (sodium chloride/table salt) is an example of a what? - Compound Atoms use ____________ _________ to combine and form molecules and compounds - chemical bonds What are the 2 strong bonds? - 1. Covalent 2. Ionic What is a covalent bond? - the sharing of electrons by two atoms Tip to remember: Co-workers share jokes together