Bio 181 Final Exam Practice Test |
Frequently Tested Questions and Answers |
2026 Updates | 100% Pass Guarantee
RNA is synthesized in the nucleus and used in the cytoplasm. To get from the nucleus to the
cytoplasm, RNA must pass through the _______ ____ in the nuclear envelope. - ANSWER- -
Nuclear Pore
Due to a high percentage of unsaturated fatty acids in their membranes, certain organisms
_______________________________ - ANSWER- -Are able to withstand high temperatures
because their membranes are less fluid.
In the following chemical reactions A, B, and C are molecules. Which answer represents a
dehydration reaction? - ANSWER- -A + B -> C + H20
Cell walls can be found as part of ____________________ - ANSWER- -Plant cells and
bacteria
A ______________ membrane protein has a tail that attaches to the lipid bilayer - ANSWER-
-Lipid Anchored
Carbohydrates function in the cell include - ANSWER- -* part of nucleotides
* source of carbon
* energy storage
* source of energy
In your small intestine during digestion, pancreatic enzymes break down proteins by
_______________ reactions into _______________ - ANSWER- -Hydrolysis, Amino Acids
,Which of the following increases the strength of the hydrophobic interactions in lipid bilayers
and thus makes them less permeable to polar molecules? - ANSWER- -Increasing the length
of the hydrocarbon chains
The net movement of molecules from a high concentration to a low concentration is best
described by which of the following? - ANSWER- -Simple Diffusion
What is the difference between the nucleolus, nucleus, and nucleoid regions? - ANSWER- -
The nucleolus is inside the nucleus and found in eukaryotic cells whereas the nucleoid is found
in prokaryotes
Which of the following would not be found in a membrane? - ANSWER- -Cellulose
Which of the following is a correct pairing between cytoskeleton filament and its structure? -
ANSWER- -Actin filament / Spiral filament
The site where the two original DNA strands are separated and active replication occurs is called
the ___________________ - ANSWER- -Replication Fork
The most accurate nucleotide base composition of the DNA double helix is
__________________ - ANSWER- -T*G = A*C
Which of the following is the correct order of events in the synthesis of the lagging strand? -
ANSWER- -Primase adds RNA primer, DNA polymerase III creates a segment of new DNA,
DNA polymerase I removes the primer, and ligase seals the gap
Either strand of a DNA molecule can be used as a template to reconstruct the other because the
two strands of a DNA molecule are ___________________ - ANSWER- -Identical
, During what stages of the cell cycle are sister chromatids present? - ANSWER- -S1, G2,
prophase, and metaphase
A cell with 10 chromosomes undergoes mitosis and cell division. How many daughter cells are
produced , and what number of chromosomes do they have? - ANSWER- -2 daughter cells,
10 chromosome each
Which of the enzymes removes the RNA nucleotides from the primer and replaces it with DNA?
- ANSWER- -DNA polymerase I
If one strand of a DNA molecule has the sequence of bases 5'ATTGCA3', the other
complementary strand would have the sequence ______________ - ANSWER- -5'TGCAAT3'
The mitotic spindle is a microtubular structure that is involved in _________________ -
ANSWER- -Separation of sister chromatids
Once a peptide bond has been formed between the amino acid attached to the tRNA in the P
site and the amino acid associated with the tRNA in the A site, what occurs next? - ANSWER-
-Translocation
What is the difference between a benign and malignant tumor? - ANSWER- -Benign tumors
do not metastasize, malignant tumors do
Ribosomes are a collection of - ANSWER- -Proteins and RNA that function in translation
What does mRNA carry away from the nucleus? - ANSWER- -Information
Which of the following molecules transfers information from the nucleus to the cytoplasm? -
ANSWER- -mRNA
Frequently Tested Questions and Answers |
2026 Updates | 100% Pass Guarantee
RNA is synthesized in the nucleus and used in the cytoplasm. To get from the nucleus to the
cytoplasm, RNA must pass through the _______ ____ in the nuclear envelope. - ANSWER- -
Nuclear Pore
Due to a high percentage of unsaturated fatty acids in their membranes, certain organisms
_______________________________ - ANSWER- -Are able to withstand high temperatures
because their membranes are less fluid.
In the following chemical reactions A, B, and C are molecules. Which answer represents a
dehydration reaction? - ANSWER- -A + B -> C + H20
Cell walls can be found as part of ____________________ - ANSWER- -Plant cells and
bacteria
A ______________ membrane protein has a tail that attaches to the lipid bilayer - ANSWER-
-Lipid Anchored
Carbohydrates function in the cell include - ANSWER- -* part of nucleotides
* source of carbon
* energy storage
* source of energy
In your small intestine during digestion, pancreatic enzymes break down proteins by
_______________ reactions into _______________ - ANSWER- -Hydrolysis, Amino Acids
,Which of the following increases the strength of the hydrophobic interactions in lipid bilayers
and thus makes them less permeable to polar molecules? - ANSWER- -Increasing the length
of the hydrocarbon chains
The net movement of molecules from a high concentration to a low concentration is best
described by which of the following? - ANSWER- -Simple Diffusion
What is the difference between the nucleolus, nucleus, and nucleoid regions? - ANSWER- -
The nucleolus is inside the nucleus and found in eukaryotic cells whereas the nucleoid is found
in prokaryotes
Which of the following would not be found in a membrane? - ANSWER- -Cellulose
Which of the following is a correct pairing between cytoskeleton filament and its structure? -
ANSWER- -Actin filament / Spiral filament
The site where the two original DNA strands are separated and active replication occurs is called
the ___________________ - ANSWER- -Replication Fork
The most accurate nucleotide base composition of the DNA double helix is
__________________ - ANSWER- -T*G = A*C
Which of the following is the correct order of events in the synthesis of the lagging strand? -
ANSWER- -Primase adds RNA primer, DNA polymerase III creates a segment of new DNA,
DNA polymerase I removes the primer, and ligase seals the gap
Either strand of a DNA molecule can be used as a template to reconstruct the other because the
two strands of a DNA molecule are ___________________ - ANSWER- -Identical
, During what stages of the cell cycle are sister chromatids present? - ANSWER- -S1, G2,
prophase, and metaphase
A cell with 10 chromosomes undergoes mitosis and cell division. How many daughter cells are
produced , and what number of chromosomes do they have? - ANSWER- -2 daughter cells,
10 chromosome each
Which of the enzymes removes the RNA nucleotides from the primer and replaces it with DNA?
- ANSWER- -DNA polymerase I
If one strand of a DNA molecule has the sequence of bases 5'ATTGCA3', the other
complementary strand would have the sequence ______________ - ANSWER- -5'TGCAAT3'
The mitotic spindle is a microtubular structure that is involved in _________________ -
ANSWER- -Separation of sister chromatids
Once a peptide bond has been formed between the amino acid attached to the tRNA in the P
site and the amino acid associated with the tRNA in the A site, what occurs next? - ANSWER-
-Translocation
What is the difference between a benign and malignant tumor? - ANSWER- -Benign tumors
do not metastasize, malignant tumors do
Ribosomes are a collection of - ANSWER- -Proteins and RNA that function in translation
What does mRNA carry away from the nucleus? - ANSWER- -Information
Which of the following molecules transfers information from the nucleus to the cytoplasm? -
ANSWER- -mRNA
