PHYS 261 MIDTERM EXAM ACTUAL
QUESTIONS AND CORRECT ANSWERS
COMPLETE SOLUTION 100 PERCENT
VERIFIED GRADED A+
⩥ Activation energy is.
Answer: energy needed to start a reaction
⩥ Enzymes increase reaction rate by.
Answer: lowering the activation energy of the reaction
⩥ A competitive inhibitor binds to.
Answer: the active site of the enzyme
⩥ After forming a complex with the ribosome, mRNA interacts with a
third molecule. This molecule is called.
Answer: tRNA
⩥ An enzyme that adds or subtracts water molecules is a.
Answer: Hydrolase
⩥ Information stored in the genes is translated into.
,Answer: Ribosomes
⩥ When an enzyme 's activity is inactivated by heat or a change in PH,
the enzyme is said to be.
Answer: denatured
⩥ An enzyme that transfers phosphates from ATP to substrate molecule
is a.
Answer: Protein kinase
⩥ The reactions of glycolysis occur in the cell's ________; the reactions
of the citric acid cycle occur in ___________..
Answer: cytoplasm, mitochondria
⩥ End product inhibition/Feedback inhibition describes the process
whereby increasing amounts of _______ reduce activity of the enzyme..
Answer: Product
⩥ When indirect form of energy is released during reactions, it is
temporarily trapped in energy carrying molecules called coenzymes.
Which of the following is a coenzyme?.
Answer:
,⩥ In the aerobic metabolism of glucose,_________ acts as the final
acceptor of electrons..
Answer: Oxygen
⩥ ATP synthase transfers the stored energy of the H+ ions to the high-
energy phosphate bond of ________ to form________..
Answer:
⩥ The TAC sequence of DNA is the ________ of a coding sequence that
is preceded by the __________ that regulates transcription..
Answer: Start, promoter region
⩥ All of the triplet codons needed to Geneproduce one functional piece
of RNA are found in one.
Answer: Gene
⩥ An allosteric modulator binds to.
Answer: a site other than the active site
⩥ The process of forming mRNA is called.
Answer: transcription
⩥ The enzymes that synthesize mRNA from DNA template are called.
, Answer: RNA polymerase.
⩥ The tRNA molecule contains the three base sequence that allows it to
bind to the mRNA is called the.
Answer:
⩥ The enzyme in the ETC that captures the energy of moving H+ ions
and converts it to ATP is called.
Answer:
⩥ Inside the matrix of the mitchondria, pyruvate.
Answer: pantothenic acid
⩥ The mRNA sequence CAU will bind to the tRNA sequence.
Answer: GUA
⩥ Transcription occurs in the.
Answer: nucleus
⩥ Once synthesized, the ________ of mRNA are removed through
________, which results in the formation of the coding sequence of a
protein..
Answer: introns, alternative splicing
QUESTIONS AND CORRECT ANSWERS
COMPLETE SOLUTION 100 PERCENT
VERIFIED GRADED A+
⩥ Activation energy is.
Answer: energy needed to start a reaction
⩥ Enzymes increase reaction rate by.
Answer: lowering the activation energy of the reaction
⩥ A competitive inhibitor binds to.
Answer: the active site of the enzyme
⩥ After forming a complex with the ribosome, mRNA interacts with a
third molecule. This molecule is called.
Answer: tRNA
⩥ An enzyme that adds or subtracts water molecules is a.
Answer: Hydrolase
⩥ Information stored in the genes is translated into.
,Answer: Ribosomes
⩥ When an enzyme 's activity is inactivated by heat or a change in PH,
the enzyme is said to be.
Answer: denatured
⩥ An enzyme that transfers phosphates from ATP to substrate molecule
is a.
Answer: Protein kinase
⩥ The reactions of glycolysis occur in the cell's ________; the reactions
of the citric acid cycle occur in ___________..
Answer: cytoplasm, mitochondria
⩥ End product inhibition/Feedback inhibition describes the process
whereby increasing amounts of _______ reduce activity of the enzyme..
Answer: Product
⩥ When indirect form of energy is released during reactions, it is
temporarily trapped in energy carrying molecules called coenzymes.
Which of the following is a coenzyme?.
Answer:
,⩥ In the aerobic metabolism of glucose,_________ acts as the final
acceptor of electrons..
Answer: Oxygen
⩥ ATP synthase transfers the stored energy of the H+ ions to the high-
energy phosphate bond of ________ to form________..
Answer:
⩥ The TAC sequence of DNA is the ________ of a coding sequence that
is preceded by the __________ that regulates transcription..
Answer: Start, promoter region
⩥ All of the triplet codons needed to Geneproduce one functional piece
of RNA are found in one.
Answer: Gene
⩥ An allosteric modulator binds to.
Answer: a site other than the active site
⩥ The process of forming mRNA is called.
Answer: transcription
⩥ The enzymes that synthesize mRNA from DNA template are called.
, Answer: RNA polymerase.
⩥ The tRNA molecule contains the three base sequence that allows it to
bind to the mRNA is called the.
Answer:
⩥ The enzyme in the ETC that captures the energy of moving H+ ions
and converts it to ATP is called.
Answer:
⩥ Inside the matrix of the mitchondria, pyruvate.
Answer: pantothenic acid
⩥ The mRNA sequence CAU will bind to the tRNA sequence.
Answer: GUA
⩥ Transcription occurs in the.
Answer: nucleus
⩥ Once synthesized, the ________ of mRNA are removed through
________, which results in the formation of the coding sequence of a
protein..
Answer: introns, alternative splicing
