1
PCB3023 Exam 1, cell bio test 1 FAU
Theisen, CH.1: Cells and Genome
Questions and Correct Answers
proteins are able to bind to which of the following
types of biological molecules Answer: - amino acids,
sugars, nucleotides, lipids, are basis for most reactions
in cells. All proteins are able to bind to one or more
molecules, often other proteins and bound substances
such as ligands or substrates.
in cells the strongest chemical interaction is? Answer:
- covalent bonds ; covalent bonds are strong, stable,
long-lasting.
hydrogen bonds are... Answer: polar covalent,
individually weak, but many bonds together can be
strong.
ionic bonds are... Answer: strong and pliable but can
easily be disrupted by polar solvents (eg. water)
van der waals forces are... Answer: individually very
weak
Pretest - Stuvia US
,2
the majority of biological catalyst are made from...
Answer: - amino acids
In the A, B, C class of protein transport pump. The
conformation changes that lead to translocation of the
transporter substance are caused by... Answer: -
repeated cycles of ATP binding and hydrolysis
True regarding prokaryotic cells? Answer: - has a cell
wall
- reproduce by binary fission
- do not exist as true...
- utilize double strands for hereditary material
- do NOT package their DNA so they do NOT need
histones
Evolution of the nucleus in eukaryotic organisms has
allowed... Answer: - Segregation of DNA from other
cellular processes
- Increase the size of the DNA molecule
Pretest - Stuvia US
,3
When a carbohydrate is oxidized it loses both ____ and
____. Answer: - electrons and energy ; Oxidation is
the loss of electrons and energy. The atom is left with a
more POSITIVE charge.
what is meant by high specificity between molecules?
Answer: - highly complementary physical shape
- highly complementary electro chemical properties
The histones used to package newly replicated DNA
Answer: - added to DNA as it is emerging from the
replication machinery
mutations within DNA coding regions... Answer: -
usually results to deleterious changes in protein
structure
DNA coding regions have important information, any
mutations on these regions are most of the time
negative (bad), so it will not be beneficial.
Pretest - Stuvia US
, 4
Entropy is the measure of... Answer: - the amount of
disorder in a system
a protein secondary structure is maintained by
Answer: - hydrogen bonds
hydrogen bonds are the bonds between atoms
binding of a ligand to a specific enzyme binding site...
Answer: - involves numerous weak noncovalent
bonds
it is not a permanent binding, so it CANNOT be
covalent, it has to be a weak bond in order for it to be
able to break or go back to its original form.
Chemical analysis of DNA will reveal the following...
Answer: - Concentration of Purines equals
concentration of Pyrimidines
Pretest - Stuvia US
PCB3023 Exam 1, cell bio test 1 FAU
Theisen, CH.1: Cells and Genome
Questions and Correct Answers
proteins are able to bind to which of the following
types of biological molecules Answer: - amino acids,
sugars, nucleotides, lipids, are basis for most reactions
in cells. All proteins are able to bind to one or more
molecules, often other proteins and bound substances
such as ligands or substrates.
in cells the strongest chemical interaction is? Answer:
- covalent bonds ; covalent bonds are strong, stable,
long-lasting.
hydrogen bonds are... Answer: polar covalent,
individually weak, but many bonds together can be
strong.
ionic bonds are... Answer: strong and pliable but can
easily be disrupted by polar solvents (eg. water)
van der waals forces are... Answer: individually very
weak
Pretest - Stuvia US
,2
the majority of biological catalyst are made from...
Answer: - amino acids
In the A, B, C class of protein transport pump. The
conformation changes that lead to translocation of the
transporter substance are caused by... Answer: -
repeated cycles of ATP binding and hydrolysis
True regarding prokaryotic cells? Answer: - has a cell
wall
- reproduce by binary fission
- do not exist as true...
- utilize double strands for hereditary material
- do NOT package their DNA so they do NOT need
histones
Evolution of the nucleus in eukaryotic organisms has
allowed... Answer: - Segregation of DNA from other
cellular processes
- Increase the size of the DNA molecule
Pretest - Stuvia US
,3
When a carbohydrate is oxidized it loses both ____ and
____. Answer: - electrons and energy ; Oxidation is
the loss of electrons and energy. The atom is left with a
more POSITIVE charge.
what is meant by high specificity between molecules?
Answer: - highly complementary physical shape
- highly complementary electro chemical properties
The histones used to package newly replicated DNA
Answer: - added to DNA as it is emerging from the
replication machinery
mutations within DNA coding regions... Answer: -
usually results to deleterious changes in protein
structure
DNA coding regions have important information, any
mutations on these regions are most of the time
negative (bad), so it will not be beneficial.
Pretest - Stuvia US
, 4
Entropy is the measure of... Answer: - the amount of
disorder in a system
a protein secondary structure is maintained by
Answer: - hydrogen bonds
hydrogen bonds are the bonds between atoms
binding of a ligand to a specific enzyme binding site...
Answer: - involves numerous weak noncovalent
bonds
it is not a permanent binding, so it CANNOT be
covalent, it has to be a weak bond in order for it to be
able to break or go back to its original form.
Chemical analysis of DNA will reveal the following...
Answer: - Concentration of Purines equals
concentration of Pyrimidines
Pretest - Stuvia US
