LAB EXAM #1 QUESTIONS AND
ANSWERS
Earth's oceans are immense. Small floating plant-like organisms called phytoplankton
contribute to ocean productivity. As ocean productivity (the rate of photosynthesis) goes
up, what would you predict would happen to global carbon dioxide lev - ANSWER-CO2
levels should go down
What will happen as CO2 levels in the oceans increase? - ANSWER-The ocean will
become more basic
The formation of starch from simple sugars such as glucose involves a series of
_______________ reactions. - ANSWER-dehydration
The primary structure of a protein is determined by - ANSWER-The sequence of amino
acids in the polypeptide chain
When proteins are heated, they usually denature. If moderate heat was applied to this
molecule of DNA, which part of the molecule would break down or break apart first?
(Use your knowledge of chemical bonds.) - ANSWER-The sugar-phosphate backbone
would separate from the nitrogen bases
The amino acid R-groups interact to create the three-dimensional structures of proteins.
Some amino acids have hydrophilic side groups, while others have hydrophobic side
groups. In the hydrophilic group, some "R" groups are acids and others are bases. What
type(s) of amino acids are acidic R-groups most likely to interact with? - ANSWER-
Basic amino acids
The key to a protein's function is its shape. The shape can be altered (or denatured)
under unfavorable conditions. By heating a protein such as that found in egg whites, the
protein's shape changes. What best describes why this happens? - ANSWER-
Interactions between R-groups change, resulting in a change in the secondary structure
of the protein
The three domains of life described by biologists today include the bacteria, the
archaea, and the eukarya (all other forms of life). What is the basic difference between
the eukarya or eukaryotes and the prokaryotes (archaea and bacteria)? - ANSWER-The
interior of the cell of eukaryotes is divided by internal membranes into specialized
compartments
A protein that is bound for secretion from a cell is produced - ANSWER-By ribosomes
found on the rough endoplasmic reticulum
ANSWERS
Earth's oceans are immense. Small floating plant-like organisms called phytoplankton
contribute to ocean productivity. As ocean productivity (the rate of photosynthesis) goes
up, what would you predict would happen to global carbon dioxide lev - ANSWER-CO2
levels should go down
What will happen as CO2 levels in the oceans increase? - ANSWER-The ocean will
become more basic
The formation of starch from simple sugars such as glucose involves a series of
_______________ reactions. - ANSWER-dehydration
The primary structure of a protein is determined by - ANSWER-The sequence of amino
acids in the polypeptide chain
When proteins are heated, they usually denature. If moderate heat was applied to this
molecule of DNA, which part of the molecule would break down or break apart first?
(Use your knowledge of chemical bonds.) - ANSWER-The sugar-phosphate backbone
would separate from the nitrogen bases
The amino acid R-groups interact to create the three-dimensional structures of proteins.
Some amino acids have hydrophilic side groups, while others have hydrophobic side
groups. In the hydrophilic group, some "R" groups are acids and others are bases. What
type(s) of amino acids are acidic R-groups most likely to interact with? - ANSWER-
Basic amino acids
The key to a protein's function is its shape. The shape can be altered (or denatured)
under unfavorable conditions. By heating a protein such as that found in egg whites, the
protein's shape changes. What best describes why this happens? - ANSWER-
Interactions between R-groups change, resulting in a change in the secondary structure
of the protein
The three domains of life described by biologists today include the bacteria, the
archaea, and the eukarya (all other forms of life). What is the basic difference between
the eukarya or eukaryotes and the prokaryotes (archaea and bacteria)? - ANSWER-The
interior of the cell of eukaryotes is divided by internal membranes into specialized
compartments
A protein that is bound for secretion from a cell is produced - ANSWER-By ribosomes
found on the rough endoplasmic reticulum
