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CAMPBELL BIOLOGY EXAM 1 questions with correct answers.
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CAMPBELL BIOLOGY EXAM 1 questionswith correct answers
Scientific method: - correct answer>> 1) Observation
2) Question
3) Hypothesis
4) Design an experiment
5) Prediction
6) Do experiment/collect data
7) Analyze data
What 4 elements make up 96% of living matter? - correct answer>> Carbon, hydrogen, oxygen, nitrogen
Atomic Number - correct answer>> Number of protons in the nucleus
Mass Number - correct answer>> Sum of protons and neutrons
Isotopes - correct answer>> Different number of neutrons
Radioactive isotope - correct answer>> decay spontaneously, giving off energy
Valence Electrons - correct answer>> found in outermost shell (valence shell)
Covalent Bond - correct answer>> shared electrons
Ionic bond - correct answer>> strip electrons from their bonding partners
Hydrogen bond - correct answer>> Bond two hydrogen
, Solution - correct answer>> liquid that is completely homogenous mixture of substances
Solvent - correct answer>> Dissolving agent in a solution
Solute - correct answer>> Substance that is being dissolved
Hydrophilic (polar) - correct answer>> affinity for water
Hydrophobic (nonpolar) - correct answer>> doesn't have affinity for water
Acid - correct answer>> Any substance that increases the H+ concentration of a solution
Base - correct answer>> Any substance that reduces the H+ concentration of a solution
Acid pH: - correct answer>> pH<7
Base pH: - correct answer>> pH>7
4 classes of Macromolecules: - correct answer>> Carbohydrates, Lipids, Proteins, Nucleic Acids
Polymers include: - correct answer>> Carbohydrates, proteins, nucleic acids
Dehydration reaction - correct answer>> lose water to form a new bond
Hydrolysis - correct answer>> add water to form a new bond
Function of a carbohydrate: - correct answer>> serve as fuel and building material
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