Biology 189 Exam 1 Chapter 1-4 Questions and
Answers
Statistical Significance - -Measure or confidence that the results obtained.
-Scientific Theory - -A hypothesis that continues to hold up after many years of testing.
-Epidemiology - -The study of patterns of disease in populations.
-Anecdotal evidence - -informal observation that hasn't been systematically tested;
interesting but often unreliable.
-Randomized Clinical Trial - -controlled medical experiment (placebo)
-All living things have five things in common: - -1. Grow
2. Metabolism
3. homeostasis
4.Reproduction
5. sense/response stimuli
-Matter (building block) - -Anything that takes up space and has mass.
-Atoms (building block) - -smallest unit of and element.
-Covalent bond - -When electrons are shared
-Ionic - ->1.7
-Polar covalent - -0.5-1.7
-Nonpolar covalent - -0.0-0.4
-Ionic bond - -occurs when more electronegative atom steals the other atom's electron no
sharing.
-Ion - -charged particle (unequal electrons and protons)
-non polar molecules - -do not dissolve in water (ex: methane)
-Water - -polar molecule; forms hydrogen bonds with water and molecules.
-Solute - -anything being DISSOLVED
-Solvent - -DOES the dissolving
, -Hydrophilic - -interact with water
-Hydrophobic - -does not interact with water
-Cohesion - -water molecules cling TOGETHER.
-Adhesion - -water molecules cling to SURFACE
-High absorbance - -lager liquid range
-Organic Molecules - -have carbon-based backbones and at least one C-H bond.
-Inorganic Molecules - -lack carbon-based backbones and C-H bonds.
-Four types of organic macromolecules make up living things: - -1. Carbohydrates
2. Proteins
3. Lipids
4. Nucleic Acids
-Carbohydrates - -A chain of sugar monomers and hydrophilic.
-Monosaccharides - -that backbone of carbon atom in monosaccharides.
-Proteins - -Made of amino acids; help speed up the rate of chemicals
-Peptide Bonds - -link chains of amino acids
-Nucleotides - -phosphate group and sugar that varies between RNA and DNA.
-Nucleic Acids - -information bearing molecules of all life on earth.
-Lipids - -Made of hydrophobic molecules, not repeating monomers.
-Virus - -not cellular
-Cell Theory Principles - -1. Cells are fundamental units of life.
2. All ricin things are composed of cells.
3. All cells come from preexisting cells.
-Prokaryotes - -Always unicellular (smaller than eukaryotes); cell wall
-Eukaryotes - -both unicellular and multicellular (larger than prokaryotes); cell membrane
-Antibiotics - -kill bacteria cells, but does not harm cells.
Answers
Statistical Significance - -Measure or confidence that the results obtained.
-Scientific Theory - -A hypothesis that continues to hold up after many years of testing.
-Epidemiology - -The study of patterns of disease in populations.
-Anecdotal evidence - -informal observation that hasn't been systematically tested;
interesting but often unreliable.
-Randomized Clinical Trial - -controlled medical experiment (placebo)
-All living things have five things in common: - -1. Grow
2. Metabolism
3. homeostasis
4.Reproduction
5. sense/response stimuli
-Matter (building block) - -Anything that takes up space and has mass.
-Atoms (building block) - -smallest unit of and element.
-Covalent bond - -When electrons are shared
-Ionic - ->1.7
-Polar covalent - -0.5-1.7
-Nonpolar covalent - -0.0-0.4
-Ionic bond - -occurs when more electronegative atom steals the other atom's electron no
sharing.
-Ion - -charged particle (unequal electrons and protons)
-non polar molecules - -do not dissolve in water (ex: methane)
-Water - -polar molecule; forms hydrogen bonds with water and molecules.
-Solute - -anything being DISSOLVED
-Solvent - -DOES the dissolving
, -Hydrophilic - -interact with water
-Hydrophobic - -does not interact with water
-Cohesion - -water molecules cling TOGETHER.
-Adhesion - -water molecules cling to SURFACE
-High absorbance - -lager liquid range
-Organic Molecules - -have carbon-based backbones and at least one C-H bond.
-Inorganic Molecules - -lack carbon-based backbones and C-H bonds.
-Four types of organic macromolecules make up living things: - -1. Carbohydrates
2. Proteins
3. Lipids
4. Nucleic Acids
-Carbohydrates - -A chain of sugar monomers and hydrophilic.
-Monosaccharides - -that backbone of carbon atom in monosaccharides.
-Proteins - -Made of amino acids; help speed up the rate of chemicals
-Peptide Bonds - -link chains of amino acids
-Nucleotides - -phosphate group and sugar that varies between RNA and DNA.
-Nucleic Acids - -information bearing molecules of all life on earth.
-Lipids - -Made of hydrophobic molecules, not repeating monomers.
-Virus - -not cellular
-Cell Theory Principles - -1. Cells are fundamental units of life.
2. All ricin things are composed of cells.
3. All cells come from preexisting cells.
-Prokaryotes - -Always unicellular (smaller than eukaryotes); cell wall
-Eukaryotes - -both unicellular and multicellular (larger than prokaryotes); cell membrane
-Antibiotics - -kill bacteria cells, but does not harm cells.
