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32 Cards in this Set
- Front
- Back
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Which of the following properties or processes do we associate with living things?
a. evolutionary adaptations b. energy processing c. responding to the environment d. growth and reproduction e. all of the above |
e. all of the above
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In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by
a. hydrogen bonds b. nonpolar covalent bonds c. polar covalent bonds d. ionic bonds d. van der Waals interactions |
c. polar covalent bonds
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The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. What is htis attraction called?
a. a covalent bond b. a hydrogen bond c. an ionic bond d. a hydrophilic bond e. a hydrophobic bond |
b. a hydrogen bond
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Water is able to form hydrgoen bonds because
a. oxygen has a valence of 2 b. the water molecule is shaped like a tetrahedron c. the bonds that hold together the atoms in a water molecule are polar covalent d. the oxygen atom in a water molecule has a weak positive charge. e. each of the hydrogen atoms in a water molecule is weakly negative in charge |
c. the bonds that hold together the atoms in a water molecule are polar covalent bonds
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Which of the following is not a polymer?
a. glucose b. starch c. cellulose d. chitin e. DNA |
a. glucose
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On food packages, to what does the term "insolulable fiber" refer?
a. cellulose b. polypeptides. c. starch d. amylopectin e. chitin |
a. cellulose
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All of the following are part of a prokaryotic cell except:
a. DNA b. a cell wall c. a plasma membrane d. ribosomes e. an endoplasmic reticulum |
e. an endoplasmic reticulum
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Organelles other than the nucleus that contain DNA include
a. ribosomes b. mitochondria c. chloroplasts d. B and C only e. A, B, and C |
d. B and C only
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Which of the following statements describes the results of this reaction?
c6h12o6 + 6o2 makes 6co2 + 6h2o + energy a. c6h12o6 is oxidized and o2 is reduced b. o2 is oxidized and h2o is reduced c. co2 is reduced and o2 is oxidized d. c6h12o6 is reduced and co2 is oxidized e. o2 is reduced and co2 is oxidized |
a. c6h12o6 is oxidized and o2 is reduced
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When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes
a. dehydrogenated b. hydrogenated c. oxidized d. reduced e. an oxidizing agent |
c. oxidized
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The oxygen consumed during CR is involved directly in which process or event?
a. glycolysis b. accepting electrons at the end of the ETC c. the citric acid cycle d. the oxidation of pyruvate to acetyl CoA e. the phosphorlylation of ADP to form ATP |
b. accepting electrons at the end of the elctron transport chain
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CO2 is released during which of the following stages of CR?
a. glycolysis and the oxidation of pyruvate to acetyl CoA b. oxidation of pyruvate to acetyl CoA and the citric acid cycle c. the citric acid cycle and oxidative phosphorlation d. oxidative phosphorylation and fermentaiton e. fermentation and glycolysis |
b. oxidation of pyruvate to acetyl CoA and the citric acid cycle
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The primary role of oxygen in CR is to
a. yield energy in teh form of ATP as it is passed down the respiratory chain b. act as an acceptor for electrons and hydrogen, forming water c. combine with carbon, form co2 d. combine with lactate, forming pyruvate e. catalyze the reactions of glycolysis |
b. act as an acceptor for electrons and hydrogen, forming water
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In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of
a. ATP, CO2, and ehtanol(ethyl alchohol) b. ATP, CO2, and lactate c. ATP, NADH, and pyruvate d. ATP, pyruvate, and oxygen e. ATP, pyruvate, and acetyl CoA |
a. ATP, CO2, and ethanol (ethyl alchohol)
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A plant has a unique photosynthetic pigment. The leaves of the plant appear to be reddish yellow. What wavelengths of visible light are being absorbed by this pigment? WhY?
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anything but red and yellow, because it does not need something it has
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Generation of proton gradients across membranes occurs during
a. photosynthesis b. respiration c. both photosynthesis and respiration d. neither photosynthesis or respiration e. photorespiration |
c. both photosynthesis and respiration
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What is the primary function of the Calvin Cycle?
a. use ATP to release carbon dioxide b. use NADPH to release carbon dioxide c. split water and release oxygen d. transport RuBP out of the the chloroplast e. synthesize simple sugars from carbon dioxide |
e. synthesize simple sugars from carbon dioxide
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Comparing light reactions w/ Calvin cycle: requires ATP
a. light reactions alone b. the Calvin cycle alone c. both the ligth reactions and the Calvin cycle d. neither the light reactions nor the calvin cycle e. occurs in the chloroplast but is not part of photosynthesis |
b. the Calvin cycle alone
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out of these choices: produces three carbon sugars
a. light reactions alone b. the Calvin cycle alone c. both the light reactions and the Calvin cycle d. neither the light reactions nor the Calvin cycle e. occurs in the chloroplast but is not part of photosynthesis |
b. the Calvin cycle alone
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out of these choices: requires glucose
a. light reactions b. the Calvin cycle c. both b and c d. neither b and c e. occurs in the chloroplast but is not part of photosynthesis |
d. neither the light reactions nort the Calvin cycle
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Which of the following does not occur during the Calvin cycle?
a. carbon fixation b. oxidation of NADPH c. release of oxygen d. regeneration of the CO2 acceptor e. consumption of ATP |
c. release of oxygen
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What is a chromatid?
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a replicate chromosome
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If cells in the process of dividing are subjected to colchicine, a drug that interferes w/ the functioning of the spindle apparatus, at which stage will mitosis be arrested?
a. anaphase b. prophase c. telophase d. metaphase e. interphase |
e. interphase
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Chromosomes first become visible during which pase of mitosis?
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prophase
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the somatic cells derived from a single celled zygote divide by which process?
a. meiosis b. mitosis c. replication d. cytokinesis alone e. binary fission |
b. mitosis
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In some cells, replicated chromosomes are aligned along the center of the cell. These particular cells are in which stage of mitosis?
a. telophase b. prophase c. anaphase d. metaphase e. prometaphase |
d. metaphase
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Why do chromosomes coil during mitosis?
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to allow the chromosomes to move w/o becoming entangled and breaking
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What are the coding segments of a stretch of eukaryotic DNA called?
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exons
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A mutation in which of the following parts of a gene is likely to be most damaging to a cell?
a. intron b. exon c. 5' UTR d. 3' UTR e. all would be equally damaging |
e. all would be equally damaging
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What is the most abundant type of RNA?
a. mRNA b. tRNA c. rRNA d. pre-mRNA e. hnRNA |
c. rRNA
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not present in all bacteria, this structure enables those that possess it to germinate after exposure to harsh conditions, such as boiling:
a. endospore b. sex pilus c. flagellum d. cell wall e. capsule |
a. endospore
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Which of these statements about prokaryotes is correct?
a. bacterial cells conjugate to mutally exchange genetic material b. their genetic material is confined within a nuclear envelope c. they divide by binary fission, w/o mitosis or meiosis d. the persistence of bacteria throughout evolutionary time is due to their genetic homogeneity e. genetic variation in bacteria is not known to occur, nor whould it occur, because of their asexual mode of reproduction |
c.
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