Biology E2 Previous Test

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jessenliz2010
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263457
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Biology E2 Previous Test
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2014-02-23 14:38:36
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Biology
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Biology
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  1. With regard to photosynthesis, photorespiration:
    - is more efficient in producing carbohydrates
    - predominates in C3 plants in cool weather when water is plentiful
    - predominated in C4 plants on hot days
    - produces the same amount of PGA
    - does none of these
    does none of these
  2. DNA polymerases:
    - are enzymes
    - add new nucleotides to a a strand
    - catalyze hydrogen bonding
    - assemble new strands in a specific direction
    - are all of these
    are all of these
  3. Which of the following statements about the electromagnectic spectrum is true?
    - infrared energy is sufficient to produce ionization
    - infrared radiation has more energy than red radiation
    - visible light has more energy than ultraviolet radiation
    - chlorophyll absorbs some visible wavelengths, but not all
    - chloroplasts absorb all wavelengths of visible light equally
    chlorophyll absorbs some visible wavelengths, but not all
  4. For animals, the final hydrogen acceptor in cellular respiration is:
    - NADP+ 
    - sulfur
    - oxygen
    - magnesium
    - phosphorus
    oxygen
  5. Which of the following carries amino acids to ribosomes, where amino acids are linked into the primary structure of polypeptide?
    - mRNA
    - tRNA
    - hnRNA
    - rRNA
    - all of these
    tRNA
  6. How many pairs of autosomes are in a typical human karyotype?
    - 1
    - 22
    - 23
    - 46
    - 92
    22
  7. Paired homologous chromosomes are found in the spindle equator during:
    - metaphase I
    - telophase I
    - prophase II
    - metaphase II
    - anaphase II
    metaphase I
  8. The form of RNA that carried the code for DNA to the site of protein assembly is called:
    - messenger RNA
    - nuclear RNA
    - ribosomal RNA
    - transfer RNA
    - structural RNA
    messenger RNA
  9. The unique feature of HeLa cells that make them important for research is that:
    - they are identical to all other human cells
    - they are immortal cells and will grow in culture
    - they are limited in growth cycles
    - they are like stem cells
    - all of these make them important
    they are immortal cells and will grow in culture
  10. Chlorophyll will not absorb which color of light?
    - red
    - yellow
    - orange
    - green
    - blue
    green
  11. DNA contains all of the following nitrogen-containing bases EXCEPT:
    - adenine
    - uracil
    - guanine
    - adenine
    - thymine
    uracil
  12. Which process is absolutely necessary for asexual reproduction to occur in eukaryotes?
    - prokaryotic fission
    - Mitosis
    - Meiosis
    - Cytokinesis
    - growth factor for activant
    mitosis
  13. The electrons for photosynthesis come from:
    - ATP
    - glucose
    - NADP+ 
    - chlorophyll I
    - H2O
    H2O
  14. Which of the following chemicals has five-carbon atoms?
    - phosphoglycerate (PGA)
    - ribulose biphosphate (RuBP)
    - phosphoglyceraldehyde (PGAL)
    - glucose
    - none of these
    ribulose biphosphate (RuBP)
  15. The yield from each pyruvate in the second stage of aerobic respiration includes:
    - 4 NADH
    - 1 FADH2
    - 1 ATP
    - 3 CO2 
    - all of these
    all of these
  16. When molecules are broken apart in respiration:
    - the heat produced is used to drive biological reactions
    - the oxygen in the compounds that are broken apart is used as an energy source
    - the energy released is channeled into molecules of ATP
    - ATP is converted in ADP
    - ADP is released as a waste product
    The energy released is channeled into molecules of ATP
  17. Crossing over:
    - increases variability in gametes
    - happens only once per homologue pair
    - occurs between sister chromatids
    -prevents genetic recombination
    - is followed immediately by separation of each of the chromatids
    increases variability in gametes
  18. The mosaic effect of X inactivation in human females can be observed in:
    - skin color
    - hair color
    - fingernails
    - distribution of sweat glands
    - all of these
    all of these
  19. The respiratory electron transport chain is located:
    - on the inner membrane of the mitochondria
    - on the inner membrane of the chloroplasts
    - in the fluid part of the chloroplast
    - throughout the cytoplasm of the cell
    - on the plasma membrane of eukaryotes
    on the inner membrane of the mitochondria
  20. Which of the following statements is(are) true concerning promoters?
    - they are short sequences in DNA
    - They are locations in DNA where regulatory proteins gather
    - they control transcription
    - they are associated with specific genes
    - all of these are true
    They control transcription
  21. There are how many different types of RNA codone?
    - 2
    - 12
    - 28
    - 64
    - 120
    64
  22. The obvious advantage of the lactose operon is that:
    - it allows bacteria to survive in the presence of lactose
    - lactose-metabolizing enzymes need not be made when lactose is not present
    - it enables bacteria to make lactose only in the presence of the proper enzymes
    - it negates the need for milk in the diet of adult humans
    - it enables glucose to substitute for lactose in the diet of lactose intolerant persons
    lactose-metabolizing enzymes need not be made when lactose is not present
  23. The proteins associated with the light-dependent reactions of photosynthesis are located:
    - on the outer membranes of the chloroplast
    - in the stroma
    - on the thylakoid membrane
    - throughout the cytoplasm of plant cells
    - in the thylakoid compartment
    on the thylakoid membrane
  24. When cells stop responding to normal controls over growth and division they:
    - begin to form a tumor
    - produce a malignancy
    - start to die
    - kill surrounding cells
    - produce scar tissue
    begin to form a tumor
  25. Which of the following is not potentially part of a chromosome in eukaryotes?
    - centromere
    - histone
    - sister chromatid
    - nucleosome
    -all of these are part of a eukaryotic chromosome
    all of these are part of a eukaryotic chromosome
  26. Which of the following is not true of mutations?
    - they are always dangerous
    - they can occur as DNA replication errors
    - they cannot be repaired after replication
    - they may become cancerous
    - if in eggs or sperm they pass to the next generation
    they are always dangerous
  27. Which of the following is not produced in the light-dependent reactions?
    - glucose
    - oxygen
    - ATP
    - NADPH
    -all of these are produces
    glucose
  28. Which of the following is NOT true about the enzyme telomerase?
    - it can re-establish telomere length
    - it is found in stem cells
    - it is responsible for telomere shortening
    - it may slow the aging process
    - it is highly expressed in cancer cells
    it is responsible for telomere shortening
  29. Which of the following is NOT true of human chromosomes:
    - the haploid number is 23
    - the diploid number is 46
    - there are 23 pairs of chromosomes
    - human gametes end up with two of each type of 23 chromosomes
    - human gametes end up with one of each type of 23 chromosomes
    human gametes end up  with two of each type of 23 chromosomes
  30. The spindle apparatus is composed of:
    -golgi bodies
    -microtubules
    - endoplasmic reticulum
    - nucleoprotein
    - chromatids
    microtubules
  31. In the spiral staircase model of DNA, the rungs are:
    - deoxyribose sugars
    - hydrogen bonds
    - nucleotide base pairs
    - phosphate groups
    - composed of all of these
    nucleotide base pairs
  32. Which of the following requires oxygen to function?
    - aerobic respiration
    - anaerobic respiration
    - alcoholic fermentation
    - lactate fermentation
    - all require oxygen
    aerobic respiration
  33. For glycolysis to begin:
    - glucose must enter the mitochondria
    - there must be an input of energy from ATP
    - oxygen must be available
    - some hydrogen acceptors must be available
    non of these needs to occur
    there must be an input of energy from ATP
  34. Actual assembly of sugars during phtosynthesis:
    -occurs during light-independent reactions
    - takes place in the stroma
    - requires NAHPH
    - requires ATP 
    - does all of these
    does all of these
  35. Bakers use alcoholic fermentation to produce ____ which causes the dough to rise.
    - alcohol
    - ATP
    - butyric acid
    - carbon dioxide
    - none of these
    carbon dioxide
  36. The two photosystems of light reactions are designated:
    - type 1 and type 2
    - type I and type II
    - photosystem A and photosystem 2
    - photosystem 680 and photosystem 700
    - photosystem I and photosystem II
    photosystem I and photosystem II
  37. During which phase of aerobic respiration is FADHproduces?
    - glycolysis
    - ethanol production
    - acetyl-CoA formation
    - the Krebs cycle
    - glycolysis and the Krebs cycle
    the Krebs cycle
  38. The difference between normal and sickle-cell hemoglobin is based upon:
    - the number of amino acids in the molecule
    - the substitution of one amino acid for another
    - the number and orientation of the amino acid chains attached to the heme portion of the molecule
    - the number of oxygen molecules that can be carried
    - the type of bone marrow that produces it
    the substitution of one amino acid for another
  39. The essence of meiosis is that:
    - gametes receive one copy of each member of each pair of homologous chromosomes
    - diploid gametes are formed
    - each gamete receives one member of each pair of homologous chromosomes
    - haploid gametes are formed
    - each gamete receives one member of each pair of homologous chromosomes, and haploid gametes are formed
    haploid gametes are formed
  40. A linear stretch of DNA that specifies the sequence of amino acids in a polypeptide is called a(n):
    - codon
    - intron
    - messenger
    - gene
    - enzyme
    gene
  41. Chromatids that are attached at the centromere are called what kind of chromatids?
    - mother
    - daughter
    - sister
    - programmed
    - either mother or daughter
    sister
  42. When glucose is used as the energy source, the largest amount of ATP is produced during:
    - glycolysis
    - acetyl-CoA formation
    - the Krebs cycle
    - substrate-level phosphorylation
    - electron transport phosphorylation
    electron transport phosphorylation
  43. Chromatids are:
    - attached at the centriole
    - a pair of chromosomes one from the mother and one from the father
    - attached at their centromeres
    - identical until crossing over occurs
    - attached at their centromeres and are identical until crossing over occurs
    attched at their centromeres and are identical until crossing over occurs
  44. Homologous chromosomes do NOT have the same:
    - length
    - shape
    - genes
    - number
    - they have all of these
    they have all of these
  45. transcript factors include all of the following EXCEPT:
    - activators
    - repressors
    - enhancers
    - translational factors
    - none of these
    translational factors
  46. During the termination stage of translation:
    - a STOP codone enters the ribosome
    - release factors bind the ribosome
    - mRNA detaches from the ribosome and the polypeptide chain
    - ribosomal subunits separate
    - all of these occur
    all of these occur
  47. Which of the following is TRUE at the end of telophase I in corn (20 chromosomes)?
    - Each cell has 10 chromosomes
    - each chromosome is double-stranded
    - centromeres connect sister chromatids
    - each cell has 10 chromosomes, and each chromosome is double-stranded
    - each cell has 10 chromosome, each chromosome is double-stranded, and centromeres connect sister chromatids
    each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids
  48. Sexual reprouction:
    - leads to uniform characteristics within a population
    - results in new combinations of genetic traits
    - creates genetic clones
    - requires less tissue differentiation than asexual reproduction
    - produces genetic clones and requires less tissue differentiation than asexual reproduction
    results in new combinations of genetic traits
  49. If a mouse injected with live R strain and heat-killed S strain:
    - the mouse will live
    - the mouse will die
    the mouse will die
  50. Homeotic genes generally control:
    - X chromosome inactivation
    - mapping the basic body plan
    - hormone synthesis
    - dosage compensation
    - none of these
    mapping the basic body plan

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