BIO 256 EXAM 1 2026 SCIENCE
SCRIPT SOLVED QUESTIONS
VERIFIED ANSWERS A+
◉ A single nucleotide change in the LMNA gene sequence leads to an
error in mRNA splicing and a defective nuclear protein.
Answer: What is the major cause underlying the rapid aging disease,
Progeria?
◉ Some metabolic reactions that may not be independently energetically
favorable in the human body may still proceed to a final product
because:
Answer: both redox reactions and energy coupling through the
hydrolysis of ATP can drive unfavorable reactions forward.
◉ Brain and heart
Answer: When the body is under stress, including during heavy exercise,
blood must continue to flow to vital organs. The two most vital organs
are the
◉ endocytosis
Answer: When cells move substances into vesicles in the cytoplasm, it is
called
◉ specific fit of a substrate to its particular enzyme.
Answer: The"lock-and-key model" of enzyme function describes the
,◉ polyribosomes in the cytoplasm
Answer: What could you observe in a cell making a lot of one certain
protein, if you used an electronmicroscope?
◉ codons
Answer: Transfer RNAanticodons pair complementarily to the ______
of mRNA.
◉ tRNA
Answer: The RNA typed haracterized by folding on itself to form a
twisted cloverleaf structure withan attached amino acid is called
◉ RNA
Answer: Which consists of a single strand of nucleotides?
◉ provides genetic code
Answer: Which is NOT a function of proteins?
◉ The coiling of the protein chain backbone into an alpha helix is
referred to as the:
Answer: Secondary structure
◉ residue or rest of the molecule, any functional group of an amino acid.
,Answer: In the structure of a protein or its subunits, the symbol N stands
for nitrogen and the symbol R stands for
◉ glucose
Answer: The molecule central to all metabolism is
◉ buffer
Answer: A solution resisting changes in H+ concentration and tending to
maintain a stable pH is called a ____ solution.
◉ positive, donated
Answer: Cations have a ____charge and are formed when they have
____ an electron to/from an anion.
◉ maintenance of body temperature
Answer: Water absorbs and releases large amounts of heat before
changing temperature. This is important in
◉ small intestine
Answer: Which organ would get the least blood flow during the running
of a marathon?
◉ Any water not contained within the cells is said to be part of the
body's _____ compartment.
Answer: extracellular
, ◉ hypothesis
Answer: In a negative feedback loop used to maintain homeostasis,
which of the following terms is NOT likely to be used?
◉ 16 meq/L
Answer: Which would be anormal measure of potassium in venous
blood?
◉ Negative feedback mechanisms work to prevent sudden severe
changes within the body.
Answer: Which of the following statements is true concerning feedback
mechanisms?
◉ False
Answer: Your physiological status would be greatly improved if you
were to remove all cholesterol from your body.
◉ FAD
Answer: Which cofactor is associated with the conversion of double
carbon-carbon bonds to single bonds?
◉ osmosis
Answer: Movement of water through a cell membrane, rather than
solute, is called
SCRIPT SOLVED QUESTIONS
VERIFIED ANSWERS A+
◉ A single nucleotide change in the LMNA gene sequence leads to an
error in mRNA splicing and a defective nuclear protein.
Answer: What is the major cause underlying the rapid aging disease,
Progeria?
◉ Some metabolic reactions that may not be independently energetically
favorable in the human body may still proceed to a final product
because:
Answer: both redox reactions and energy coupling through the
hydrolysis of ATP can drive unfavorable reactions forward.
◉ Brain and heart
Answer: When the body is under stress, including during heavy exercise,
blood must continue to flow to vital organs. The two most vital organs
are the
◉ endocytosis
Answer: When cells move substances into vesicles in the cytoplasm, it is
called
◉ specific fit of a substrate to its particular enzyme.
Answer: The"lock-and-key model" of enzyme function describes the
,◉ polyribosomes in the cytoplasm
Answer: What could you observe in a cell making a lot of one certain
protein, if you used an electronmicroscope?
◉ codons
Answer: Transfer RNAanticodons pair complementarily to the ______
of mRNA.
◉ tRNA
Answer: The RNA typed haracterized by folding on itself to form a
twisted cloverleaf structure withan attached amino acid is called
◉ RNA
Answer: Which consists of a single strand of nucleotides?
◉ provides genetic code
Answer: Which is NOT a function of proteins?
◉ The coiling of the protein chain backbone into an alpha helix is
referred to as the:
Answer: Secondary structure
◉ residue or rest of the molecule, any functional group of an amino acid.
,Answer: In the structure of a protein or its subunits, the symbol N stands
for nitrogen and the symbol R stands for
◉ glucose
Answer: The molecule central to all metabolism is
◉ buffer
Answer: A solution resisting changes in H+ concentration and tending to
maintain a stable pH is called a ____ solution.
◉ positive, donated
Answer: Cations have a ____charge and are formed when they have
____ an electron to/from an anion.
◉ maintenance of body temperature
Answer: Water absorbs and releases large amounts of heat before
changing temperature. This is important in
◉ small intestine
Answer: Which organ would get the least blood flow during the running
of a marathon?
◉ Any water not contained within the cells is said to be part of the
body's _____ compartment.
Answer: extracellular
, ◉ hypothesis
Answer: In a negative feedback loop used to maintain homeostasis,
which of the following terms is NOT likely to be used?
◉ 16 meq/L
Answer: Which would be anormal measure of potassium in venous
blood?
◉ Negative feedback mechanisms work to prevent sudden severe
changes within the body.
Answer: Which of the following statements is true concerning feedback
mechanisms?
◉ False
Answer: Your physiological status would be greatly improved if you
were to remove all cholesterol from your body.
◉ FAD
Answer: Which cofactor is associated with the conversion of double
carbon-carbon bonds to single bonds?
◉ osmosis
Answer: Movement of water through a cell membrane, rather than
solute, is called
