BIO 121 Final Exam Questions With All
Correct Answers
In 6C6H12O6 there are ________ oxygen atoms? Correct answer-36
The molecular mass of Na2CO3 is... Correct answer-106
In the equation 2H2 + 02 ---> 2H2O....
A. H2, O2, and H2O are all compounds
B. H2, O2, and H2O are all elements
C. Only H2 and O2 are compounds
D. Only H2O is a compound Correct answer-D. Only H2O is a compound
The tendency of water molecules to stick with another molecule other than water is.... Correct
answer-Adhesion
Which is less dense, solid water or liquid water? Correct answer-Liquid water-the molecules can fit
closer together because they are breaking and reforming, unlike ice molecules
pH of 3 is how many times more acidic than pH of 6? Correct answer-1000x more
Covalent Bonds Correct answer-share electrons
Ionic Bonds Correct answer-accept electrons
What does the body NOT break down for energy? Correct answer-RNA
3 most common atoms in our body Correct answer-hydrogen, oxygen, and carbon
Which of the following contains a carboxyl group and an amino group?
A. Amino acid
B. Fat
C. Sugar
D. Vinegar Correct answer-A. Amino acid
Which of the following statements about dehydration synthesis (condensation) is FALSE?
A. One monomer loses hydrogen atoms, other hydroxyl group
B. H2O is formed as the monomers are joined
C. Covalent bonds are formed between monomers
D. Animal digestive systems utilize to break down food Correct answer-D. Animal digestive systems
utilize to break down food
An oil may be converted into a substance that is solid at room temperature by Correct answer-
adding hydrogen, decreasing the number of double bonds in molecules
Fatty acids with double bonds between some of their carbons are said to be Correct answer-
unsaturated
Primary structure of a protein is Correct answer-the amino acid sequence of the polypeptide chain
, Which of the following are false about nucleotides?
A. Nucleotides contain lipids
B. Nucleotides contain sugar molecules
C. Nucleotides can be linked together to form nucleic acids
D. Nucleotides contain nitrogenous bases Correct answer-A. Nucleotides contain lipids
A molecule with the formula C18H32O16 is a Correct answer-polypeptide
Monosaccharides ratio Correct answer-1:2:1
Ex. Glucose C6H12O2
Isomers are Correct answer-molecules that have the same molecular formula
Disaccharide are Correct answer-2 monosaccharides together with condensation reaction (H2O is
taken out)
Hydrolysis reaction is Correct answer-adding water
Polysaccharides are Correct answer-Disaccharides + monosaccharides
also hydrophilic
Nucleoid region of prokaryotic cell Correct answer-contains the cells of DNA
Function of nucleoulus is... Correct answer-to manufacture ribosomal RNA
Which location in the cell is UNLIKELY to contain ribosomes or ribosomal units? Correct answer-
Plasma membrane
Order in which insulin passes through from its production to its exit from the cell Correct answer-
Rough ER, transport vesicles, golgi apparatus, transport vesicles, cell membrane
Gap Junctions Correct answer-connect cytoplasm of 2 cells and allows molecules, ions, and electric
impulses
Tight Juntctions Correct answer-Prevents cell leakage
Anchoring Junctions Correct answer-Proteins fasten cells together
What part of the cell is responsible for ATP? Correct answer-Mitochondria
What part of the cell is responsible for lipids and proteins? Correct answer-ER
Thermodynamics First Law Correct answer-Energy can be transformed and transferred, but cannot
be destroyed or created.
Thermodynamics Second Law Correct answer-In each energy transformation, some energy is lost
in the form of heat
When a cell uses chemical energy to perform work, it uses the energy released from a(n) ________
reaction to drive a(n) ________ reaction. Correct answer-exergonic, endergonic
Correct Answers
In 6C6H12O6 there are ________ oxygen atoms? Correct answer-36
The molecular mass of Na2CO3 is... Correct answer-106
In the equation 2H2 + 02 ---> 2H2O....
A. H2, O2, and H2O are all compounds
B. H2, O2, and H2O are all elements
C. Only H2 and O2 are compounds
D. Only H2O is a compound Correct answer-D. Only H2O is a compound
The tendency of water molecules to stick with another molecule other than water is.... Correct
answer-Adhesion
Which is less dense, solid water or liquid water? Correct answer-Liquid water-the molecules can fit
closer together because they are breaking and reforming, unlike ice molecules
pH of 3 is how many times more acidic than pH of 6? Correct answer-1000x more
Covalent Bonds Correct answer-share electrons
Ionic Bonds Correct answer-accept electrons
What does the body NOT break down for energy? Correct answer-RNA
3 most common atoms in our body Correct answer-hydrogen, oxygen, and carbon
Which of the following contains a carboxyl group and an amino group?
A. Amino acid
B. Fat
C. Sugar
D. Vinegar Correct answer-A. Amino acid
Which of the following statements about dehydration synthesis (condensation) is FALSE?
A. One monomer loses hydrogen atoms, other hydroxyl group
B. H2O is formed as the monomers are joined
C. Covalent bonds are formed between monomers
D. Animal digestive systems utilize to break down food Correct answer-D. Animal digestive systems
utilize to break down food
An oil may be converted into a substance that is solid at room temperature by Correct answer-
adding hydrogen, decreasing the number of double bonds in molecules
Fatty acids with double bonds between some of their carbons are said to be Correct answer-
unsaturated
Primary structure of a protein is Correct answer-the amino acid sequence of the polypeptide chain
, Which of the following are false about nucleotides?
A. Nucleotides contain lipids
B. Nucleotides contain sugar molecules
C. Nucleotides can be linked together to form nucleic acids
D. Nucleotides contain nitrogenous bases Correct answer-A. Nucleotides contain lipids
A molecule with the formula C18H32O16 is a Correct answer-polypeptide
Monosaccharides ratio Correct answer-1:2:1
Ex. Glucose C6H12O2
Isomers are Correct answer-molecules that have the same molecular formula
Disaccharide are Correct answer-2 monosaccharides together with condensation reaction (H2O is
taken out)
Hydrolysis reaction is Correct answer-adding water
Polysaccharides are Correct answer-Disaccharides + monosaccharides
also hydrophilic
Nucleoid region of prokaryotic cell Correct answer-contains the cells of DNA
Function of nucleoulus is... Correct answer-to manufacture ribosomal RNA
Which location in the cell is UNLIKELY to contain ribosomes or ribosomal units? Correct answer-
Plasma membrane
Order in which insulin passes through from its production to its exit from the cell Correct answer-
Rough ER, transport vesicles, golgi apparatus, transport vesicles, cell membrane
Gap Junctions Correct answer-connect cytoplasm of 2 cells and allows molecules, ions, and electric
impulses
Tight Juntctions Correct answer-Prevents cell leakage
Anchoring Junctions Correct answer-Proteins fasten cells together
What part of the cell is responsible for ATP? Correct answer-Mitochondria
What part of the cell is responsible for lipids and proteins? Correct answer-ER
Thermodynamics First Law Correct answer-Energy can be transformed and transferred, but cannot
be destroyed or created.
Thermodynamics Second Law Correct answer-In each energy transformation, some energy is lost
in the form of heat
When a cell uses chemical energy to perform work, it uses the energy released from a(n) ________
reaction to drive a(n) ________ reaction. Correct answer-exergonic, endergonic
