BIO final

Card Set Information

Author:
melissag94
ID:
251274
Filename:
BIO final
Updated:
2013-12-08 17:57:12
Tags:
bio100
Folders:
BIO100
Description:
backtest
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user melissag94 on FreezingBlue Flashcards. What would you like to do?


  1. all steroid have the same basic structure, t or f
    true
  2. if life evolves on mars, based on the biochemistry of terrestrial life forms, on which element would is probably be based?
    carbon
  3. atoms are most stable when they possess no overall electrical charge
    true
  4. the atoms found in common table salt (NaCL) are held together by ___ bonds
    ionic
  5. the age of the earth is measured in ___ of years
    billions
  6. which molecule is not an energy storage molecule?
    phospholipids
  7. the universe is approximately ____ years old
    15 billion
  8. the earth is approximately ___ years old
    5 billion
  9. the chemical identity of an atom is established by the number of ___ in its nucleus
    protons
  10. the bonds that an atom will or can participate in is determined by
    the number of electrons in an atoms outer most shell
  11. approximately what percentage of the naturally occurring elements are used by living systems?
    25
  12. which molecule is considered a storage or depot lipid?
    triglyceride
  13. sucrose is an example of a
    dissaccharide
  14. all proteins are polymers of
    amino acid
  15. cellulose, starch and glycogen are all polymers of
    glucose
  16. cellulose, structural proteins and DNA are ALL polymers
    true
  17. the biochemical in the primordial soup were formed by which process?
    abiotic synthesis
  18. cell membranes work because phospholipids have hydrophobic (water hating) AND hydrophilic (water loving) portions of the same molecule
    true
  19. who disproved the 19th century formulation of spontaneous generation?
    pasteur
  20. the earliest living organisms probably used ___ as their hereditary biochemical
    RNA
  21. a cell with 24 chromosomes divides by mitosis. How many chromosomes are present in each of the daughter nuclei
    24
  22. diploid refers to ___ chromosomes of each type
    2
  23. the division of the cytoplasm is the same in plants and animal cells
    false
  24. during which phase of the cell cycle are chromosomes duplicated?
    S
  25. mitosis results in the production of 4 haploid nuclei
    false
  26. sister chromatids are attached to each other at the
    centromere
  27. which phase is not a formal stage of mitosis
    interphase
  28. during which phase does the nuclear envelope being to reform?
    telophase
  29. visible, organized chromosomes are a feature of a ___ nucleus
    dividing
  30. in human, red blood cells are replaced by
    mitosis
  31. in terms of the cell cycle, neurons are generally locked in ?
    G1
  32. a haploid possesses ____ chromosomes of each type
    1
  33. the cell wall material in the vesicles of the cell plate was packaged in a
    Golgi body
  34. which organelle is responsible for maternal inheritance
    mitochondrion
  35. the cell wall is an extracellular structure/
    true
  36. individual genes have a physical address
    true
  37. if both parents exhibit a recessive trait, what is the chance that their offspring will exhibit the dominant phenotype?
    0%
  38. in a dihybrid cross between two individuals both heterozygous for two traits carried on non-homologous chromosomes (AaBb x AaBb), what are the chances of having progeny that exhibit both dominant phenotype?
    56%
  39. a 1/2/1 ratio in the F2 generation is a ___ ratio
    genotypic
  40. crossing over occurs during
    prophase I
  41. human sperm cells carry ___ chromosomes of each and every type
    1
  42. crossing over tends to ____ genetic diversity
    increase
  43. after meiosis, each haploid gamete carries one allele for each inherited trait
    true
  44. a recessive phenotype is only expressed in the ___ condition
    homozygous
  45. when is the phenotypic ratio of the F2 identical to genotypic ratio?
    when the alleles are incompletely dominant
  46. alleles are?
    genes for different traits
  47. oogenesis and spermatogenesis utilize
    meiosis
  48. mendel concluded that genes were particulate units of inheritance
    true
  49. if the probability of event A happening is 80%, you can expect the event to occur four time out of?
    5
  50. bacteria divide by
    binary fission
  51. bacterial diseases are caused by
    parasitic bacteria
  52. rabies is a bacterial disease
    false
  53. in the urey/miller experiment, primordial life was created
    true
  54. most heterotrophic bacteria are involved in the process of decomposition
    true
  55. human eye color is under the control of ____ genes
    app 15
  56. the probability of event A happening is 50%. The probability of event B happening of 50%. What is probability of both events occurring together?
    25%
  57. community is the ____ component of an ecosystem
    biotic
  58. human population size is generally regulated by
    all of the above
  59. all living organisms contribute to the CO2 concentration of the atmosphere.
    true
  60. which trophic level would have the smallest number of individuals?
    second order (top) carnivores
  61. ecosystems acquire energy through the process of
    photosynthesis
  62. in a balance ecosystem, energy
    • is constantly recycled
    • flows from consumers to the producers
    • flows from the producers to the consumers
  63. genetic information is stored in the structure of ?
    DNA, RNA, protein
  64. dna is a polymer of
    nucleotides
  65. T-RNA?
    carries any amino acid
  66. M-RNA?
    carries information on how to make protein
  67. DNA directed RNA polymerase would be directly involved in ?
    transcription of m-RNA
  68. 76-86 =?
    all false
  69. DNA is a polymer is A, T, C and U containing nucleotides
    false
  70. disulfide bonds may be used to link two different protein chains together
    false
  71. the atomic ratio for most carbohydrates is 1 carbon/ 2 hydrogens/ 1 oxygen
    true
  72. all amino acids have the same general structure?
    true
  73. when scorpions respire, which gas is produced?
    CO2
  74. could respiration rates be studied by measuring the volume of O2 consumed/unit time?
    yes
  75. respiration rate is measure using which units?
    volume of CO2 produced/min/gm of organism
  76. omnivorous dinosaurs, animals that eat both plants and animals, extracted the chemical energy in their food using
    respiration
  77. fats and carbohydrates are low-energy carbon molecules, t or f
    false
  78. nucleic acids have a ____ backbone
    sugar phosphate
  79. disaccharides are composed of ____ simple sugars
    2
  80. biochemistry is based in the chemistry of which element/
    carbon
  81. all organisms respire, t or f?
    true
  82. the earliest existence for life on earth is 4.5 billion years?
    true
  83. during mitosis, homologous chromosomes must pair
    true
  84. dominant alleles are always expressed
    false
  85. phenotype determines genotype
    false
  86. the genetic code has been shown to be a ___ code
    triple
  87. ____ bonds join the two strands of DNA together to form the double helix
    hydrogen
  88. when scorpions respire, which gas is being consumed?
    O2

What would you like to do?

Home > Flashcards > Print Preview