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BIO 201 Exam 1 (Frampton, UNCW)and
Answers
Biology - Answers✓✓the scientific study of life
Levels of Organization - Answers✓✓atoms, molecules and macromolecules, cells, tissues,
organs, organisms, population, community, ecosystem, biosphere
Key Features of Life - Answers✓✓cells and organization, energy and metabolism, response to
environmental changes, regulation and homeostasis, grown and developments, reproduction,
biological evolution
All Cells - Answers✓✓enclosed by a membrane and use DNA
Eukaryotic Cell - Answers✓✓has membrane-enclosed organelles
- plants, animals, fungi
Prokaryotic Cell - Answers✓✓simpler and smaller, does not contain a nucleus or other
membrane-enclosed organelles
Negative Feedback - Answers✓✓as more product accumulates, the process that creates it slows
and less of the product is created
Positive Feedback - Answers✓✓as more of a product accumulates, the process that creates it
speeds up and more of the product is produced
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Two Main Types of Scientific Inquiry - Answers✓✓discovery science, hypothesis-based
science
Discovery Science - Answers✓✓describes natural structures and processes, based on
observation and the analysis of data
Hypothesis - Answers✓✓a tentative answer to a well-framed question
A Theory Is - Answers✓✓broader in scope than a hypothesis, general and can lead to new
testable hypotheses, supported by a large body of evidence in comparison to a hypothesis
Matter - Answers✓✓consists of chemical elements in pure form and in combinations called
compounds
- anything that takes up space and has mass
Element - Answers✓✓substance that cannot be brown down to there substances by chemical
reactions
Compound - Answers✓✓substance consisting of two or more elements in a fixed ratio
- has characteristics different from those of its elements
Essential Elements - Answers✓✓carbon, hydrogen, oxygen, and nitrogen
- 95% of matter
calcium, phosphorus, potassium, and sulfur
-4%
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remaining amount are trace elements
Atom - Answers✓✓the smallest unit of matter that still retains the properties of an element
- each element consists of unique atoms
Neutron - Answers✓✓no electric charge
Proton - Answers✓✓positively charged particle
- determines the elements atomic number
Electron - Answers✓✓negatively charged particle
Mass Number - Answers✓✓sum of the protons plus neutrons in the nucleus
Isotopes - Answers✓✓two atoms of an element that differ in number of neutrons
- applications: dating fossils, tracing atoms through metabolic processes, diagnosing medical
disorders
Energy - Answers✓✓the capacity to cause change
Potential Energy - Answers✓✓the energy that matter has because of its location or structure
3 Types of Bonding - Answers✓✓covalent & ionic (strongest), hydrogen (weakest)