Biology 101 - Exam 1 NVCC Questions
With Complete Answers
Organic Molecules are Based Primarily on carbon
Valence the number of bonds an atom can form
What can Carbon do? -can form 4 bonds at one time
-can form up to 3 bonds with 1 atom
-different number of bonds cause different 3-D shapes
Carbon skeletons can vary in what 4 ways -length
-branching
-double bond position
-rings
Hydroxyl OH-
Carboxyl -COOH
, Biology 101 - Exam 1 NVCC Questions
With Complete Answers
Amino -NH2
Phosphate -PO4-2
Adenosine Triphosphate hydroxyl amino and phosphate groups can be found on an ATP
molecule
Characteristics of Lipids -larger than many organic molecules but smaller than the other 3
-no monomers or polymers
-all are hydrophobic
Important kinds of Lipids -fats
-phospholipids
-steroids
What can Monomers do? they can act alone; have a function
, Biology 101 - Exam 1 NVCC Questions
With Complete Answers
Synthesis building or constructing
lysis breaking or cutting
Hydro water
hydrolysis breaks down polymers by adding water
Characteristics of Carbohydrates have a chemical formula in multiples of CH2O
-monomer: monosaccharides
Characteristics of a Water Molecule -two single covalent bonds
-polar molecule
-hydrogen bonding
What are the four properties of water? -highly cohesive
, Biology 101 - Exam 1 NVCC Questions
With Complete Answers
-moderation of temperature
-less dense than a solid
-versatile solvent
Acid something that releases hydrogen ions into a solution
Base something that reduces in the solution or accepts from the solutionex: sodium
hydroxide
pH scale based on the concentration of the H+ ions in a solution
0 on the pH scale means acid
14 on pH scale base
7.0 on pH scale neutral
With Complete Answers
Organic Molecules are Based Primarily on carbon
Valence the number of bonds an atom can form
What can Carbon do? -can form 4 bonds at one time
-can form up to 3 bonds with 1 atom
-different number of bonds cause different 3-D shapes
Carbon skeletons can vary in what 4 ways -length
-branching
-double bond position
-rings
Hydroxyl OH-
Carboxyl -COOH
, Biology 101 - Exam 1 NVCC Questions
With Complete Answers
Amino -NH2
Phosphate -PO4-2
Adenosine Triphosphate hydroxyl amino and phosphate groups can be found on an ATP
molecule
Characteristics of Lipids -larger than many organic molecules but smaller than the other 3
-no monomers or polymers
-all are hydrophobic
Important kinds of Lipids -fats
-phospholipids
-steroids
What can Monomers do? they can act alone; have a function
, Biology 101 - Exam 1 NVCC Questions
With Complete Answers
Synthesis building or constructing
lysis breaking or cutting
Hydro water
hydrolysis breaks down polymers by adding water
Characteristics of Carbohydrates have a chemical formula in multiples of CH2O
-monomer: monosaccharides
Characteristics of a Water Molecule -two single covalent bonds
-polar molecule
-hydrogen bonding
What are the four properties of water? -highly cohesive
, Biology 101 - Exam 1 NVCC Questions
With Complete Answers
-moderation of temperature
-less dense than a solid
-versatile solvent
Acid something that releases hydrogen ions into a solution
Base something that reduces in the solution or accepts from the solutionex: sodium
hydroxide
pH scale based on the concentration of the H+ ions in a solution
0 on the pH scale means acid
14 on pH scale base
7.0 on pH scale neutral
