Bio 100 - Midterm 1 Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Hypothesis - CORRECT ANSWER - Observations can lead to us asking questions and
propose hypothetical explanations called hypothesis
Elements that make up 96% of the human body weight - CORRECT ANSWER - Oxygen,
Carbon, Hydrogen, Nitrogen,
Elements that make up 4% of the human body weight - CORRECT ANSWER - Calcium,
Phosphorus, Potassium, Sulfur, Sodium, Chlorine, Magnesium
Elements that make up less than .01% of the human body weight - CORRECT ANSWER -
Boron, Chromium, Copper, Fluorine, Iodine, Iron
Mass and % of Oxygen - CORRECT ANSWER - 8, 65
Mass and % of Carbon - CORRECT ANSWER - 6, 18.5
Mass and % of Hydrogen - CORRECT ANSWER - 1, 9.5
Mass and % of Nitrogen - CORRECT ANSWER - 7, 3.3
Covalent Bond - CORRECT ANSWER - Is the sharing of a pair of valence electrons by
two atoms
Molecule - CORRECT ANSWER - Consists of two or more atoms held together by
covalent bonds
, Polar Covalent Bond - CORRECT ANSWER - One atom is more electronegative, and
atoms do not share the electron equally
Ionic Bonds - CORRECT ANSWER - Atoms strip electrons from their bonding partners.
After the transfer of an electron, both atoms have charges
Hydrogen Bond - CORRECT ANSWER - An H atom covalently bonded to one e- atom.
Usually oxygen or nitrogen atoms
Polar Molecule - CORRECT ANSWER - Polarity allows water molecules to form
hydrogen bonds with each other
Hydration Shell - CORRECT ANSWER - Each ion is surrounded by a sphere of water
molecules called...
Condensation Reaction - CORRECT ANSWER - Two monomers bond together through
the loss of a water molecule
Enzymes - CORRECT ANSWER - Macromolecules that speed up the dehydration process
Hydrolysis - CORRECT ANSWER - The process by which polymers are broken down to
monomers
Glucose Molecule - CORRECT ANSWER -
Monomer - CORRECT ANSWER - A molecule that can be bonded to other identical
molecules to form a polymer
ACTUAL Exam Questions and CORRECT
Answers
Hypothesis - CORRECT ANSWER - Observations can lead to us asking questions and
propose hypothetical explanations called hypothesis
Elements that make up 96% of the human body weight - CORRECT ANSWER - Oxygen,
Carbon, Hydrogen, Nitrogen,
Elements that make up 4% of the human body weight - CORRECT ANSWER - Calcium,
Phosphorus, Potassium, Sulfur, Sodium, Chlorine, Magnesium
Elements that make up less than .01% of the human body weight - CORRECT ANSWER -
Boron, Chromium, Copper, Fluorine, Iodine, Iron
Mass and % of Oxygen - CORRECT ANSWER - 8, 65
Mass and % of Carbon - CORRECT ANSWER - 6, 18.5
Mass and % of Hydrogen - CORRECT ANSWER - 1, 9.5
Mass and % of Nitrogen - CORRECT ANSWER - 7, 3.3
Covalent Bond - CORRECT ANSWER - Is the sharing of a pair of valence electrons by
two atoms
Molecule - CORRECT ANSWER - Consists of two or more atoms held together by
covalent bonds
, Polar Covalent Bond - CORRECT ANSWER - One atom is more electronegative, and
atoms do not share the electron equally
Ionic Bonds - CORRECT ANSWER - Atoms strip electrons from their bonding partners.
After the transfer of an electron, both atoms have charges
Hydrogen Bond - CORRECT ANSWER - An H atom covalently bonded to one e- atom.
Usually oxygen or nitrogen atoms
Polar Molecule - CORRECT ANSWER - Polarity allows water molecules to form
hydrogen bonds with each other
Hydration Shell - CORRECT ANSWER - Each ion is surrounded by a sphere of water
molecules called...
Condensation Reaction - CORRECT ANSWER - Two monomers bond together through
the loss of a water molecule
Enzymes - CORRECT ANSWER - Macromolecules that speed up the dehydration process
Hydrolysis - CORRECT ANSWER - The process by which polymers are broken down to
monomers
Glucose Molecule - CORRECT ANSWER -
Monomer - CORRECT ANSWER - A molecule that can be bonded to other identical
molecules to form a polymer
