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PCB3023 EXAM 1,CELL BIO TEST 1 FAU
THEISEN,CH.1:CELLS AND GENOME
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
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
the majority of biological catalyst are made from... - (ANSWER)- amino acids
, 2
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
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
, 3
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.
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
, 4
Because its circular, replication of prokaryotic DNA does NOT require... -
(ANSWER)- Telomerase function
Telomerase is used to stabilize the ends of Eukaryotic chromosomes which are
linear. Since prokaryotic DNA is not linear, it does NOT need telomerase to
stabilize its ends.
Flipping out refers to... - (ANSWER)- The temporary separation of a base from its
compliment to allow close inspection.
activation energy is a property of... - (ANSWER)- all types of chemical reactions
It is NOT the energy required to push a reaction in an unfavorable direction.
Universal features of all cells... - (ANSWER)- take up matter from their
surroundings
- store hereditary information
- use RNA to direct protein synthesis
- all cells use DNA
- all cells replicate their DNA
- transcribe DNA into RNA
- regulate gene expression
- synthesize proteins using mRNA as a template
PCB3023 EXAM 1,CELL BIO TEST 1 FAU
THEISEN,CH.1:CELLS AND GENOME
EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2025 – 2026
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
the majority of biological catalyst are made from... - (ANSWER)- amino acids
, 2
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
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
, 3
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.
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
, 4
Because its circular, replication of prokaryotic DNA does NOT require... -
(ANSWER)- Telomerase function
Telomerase is used to stabilize the ends of Eukaryotic chromosomes which are
linear. Since prokaryotic DNA is not linear, it does NOT need telomerase to
stabilize its ends.
Flipping out refers to... - (ANSWER)- The temporary separation of a base from its
compliment to allow close inspection.
activation energy is a property of... - (ANSWER)- all types of chemical reactions
It is NOT the energy required to push a reaction in an unfavorable direction.
Universal features of all cells... - (ANSWER)- take up matter from their
surroundings
- store hereditary information
- use RNA to direct protein synthesis
- all cells use DNA
- all cells replicate their DNA
- transcribe DNA into RNA
- regulate gene expression
- synthesize proteins using mRNA as a template
