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Test 2 Review

Quiz by Amanda Wood

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20 questions
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  • Q1
    Energy is stored long-term in the bonds of _____ and used short-term to perform work from a(n) _____ molecule.
    an anabolic molecule : catabolic molecule
    ATP : glucose
    glucose : ATP
    a catabolic molecule : anabolic molecule
    30s
  • Q2
    What is removed from pyruvate during its conversion into an acetyl group?
    B vitamin
    oxygen
    ATP
    carbon dioxide
    30s
  • Q3
    What do the electrons added to NAD+ do?
    They energize the entry of the acetyl group into the citric acid cycle.
    They become part of a fermentation pathway.
    They go to another pathway for ATP production.
    They are converted to NADP.
    30s
  • Q4
    A reducing chemical reaction ________.
    reduces the compound to a simpler form
    is a catabolic reaction
    adds an electron to the substrate
    removes a hydrogen atom from the substrate
    30s
  • Q5
    Which of the following analogies best describes the induced-fit model of enzyme-substrate binding?
    a hug between two people
    a key fitting into a lock
    the fitting together of two jigsaw puzzle pieces
    a square peg fitting through the square hole and a round peg fitting through the round hole of a children’s toy
    30s
  • Q6
    DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and releasing the parent and daughter DNA. Which of the following accurately describes this process?
    This is both anabolic and catabolic
    This is a catabolic process
    This is an anabolic process
    This is a metabolic process, but neither anabolic or catabolic
    30s
  • Q7
    Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?
    Enzymes are activated by neighboring molecules.
    Enzymes are specific to a substrate.
    Enzymes can be found in all life-forms.
    Enzymes can operate in a wide range of conditions.
    30s
  • Q8
    Which statement accurately describes the role of key organelles in energy transfer?
    Energy is captured and stored in the nucleus and released in the chloroplast.
    Energy is captured and stored in the nucleus and released in the mitochondria.
    Energy is captured and stored in the mitochondria and released in the chloroplast.
    Energy is captured and stored in the chloroplast and released in the mitochondria.
    30s
  • Q9
    Which of the following molecules is likely to have the most potential energy?
    ADP
    Glucose
    ATP
    Sucrose
    30s
  • Q10
    In which phase of the eukaryotic cell cycle is the genetic material duplicated?
    G2 phase
    M phase
    S phase
    G1 phase
    30s
  • Q11
    Students place a plant in a dark, windowless closet for two days. Which of these will help the plant maintain homeostasis?
    growing deeper roots
    losing all of its leaves
    using stored sugars
    decreasing stem size
    30s
  • Q12
    Which of these must occur during S phase of the cell cycle so that two daughter cells can be produced during M phase?
    The cytoplasm must be separated.
    The chromosomes must be joined.
    The cell membrane must be expanded.
    The DNA must be replicated.
    30s
  • Q13
    Proteins in eukaryotic cells which control the progression of cells through the cell cycle are –
    cyclins
    cytochromes
    recyclins
    cytokines
    30s
  • Q14
    The genetic code is the set of instructions that translates genetic material into proteins. This code defines how sequences of three nucleotides specify which amino acid will be added next during protein synthesis. Each sequence of three nucleotides is called —
    a DNA molecule
    a protein
    a mutagen
    a codon
    30s
  • Q15
    GTP or ATP is produced during the conversion of ________.
    malate into oxaloacetate
    isocitrate into α-ketoglutarate
    fumarate into malate
    succinyl CoA into succinate
    30s

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