BIO 100 - MIDTERM 1 REVIEW
QUESTIONS WITH VERIFIED ANSWERS
2025
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%Aof 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 c
harges
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
AAmolecule that can be bonded to other identical molecules to form a polymer
Polymer CORRECT ANSWER
A substance that has a molecular structure consisting chiefly or entirely of a large number of similar uni
ts bonded together
Polysaccharide CORRECT ANSWER The polymers of sugars and have storage and structural roles
Starch CORRECT ANSWER A storage polysaccharide of plants, and consists entirely of glucose
monomers
QUESTIONS WITH VERIFIED ANSWERS
2025
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%Aof 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 c
harges
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
AAmolecule that can be bonded to other identical molecules to form a polymer
Polymer CORRECT ANSWER
A substance that has a molecular structure consisting chiefly or entirely of a large number of similar uni
ts bonded together
Polysaccharide CORRECT ANSWER The polymers of sugars and have storage and structural roles
Starch CORRECT ANSWER A storage polysaccharide of plants, and consists entirely of glucose
monomers
