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Phases of Bacterial Growth
25問 • 4ヶ月前
  • HERSHEY VALERIE BERNARDINO
    • 通報

    問題一覧

  • 1

    The period of little or no cell division so the population remains temporarily unchanged.

    lag phase

  • 2

    No apparent cell division occurs but the cells maybe growing in volume or size, synthesizing enzymes, proteins, etc., and increasing in metabolic activity in preparation for the next phase.

    lag phase

  • 3

    Period during which cells, depleted of metabolites and enzymes as a result of unfavorable conditions that existed at the end of their prenous culture history, adapt to their new environment.

    lag phase

  • 4

    Also called as the geometric growth phase

    log/exponential phase

  • 5

    Cells begin to divide and enter a period of growth or logarithmic increase.

    log/exponential phase

  • 6

    Cellular reproduction is most active during this period and generation time reaches a constant minimum.

    log/exponential phase

  • 7

    Cannot be continued forever in a batch because of: - Exhaustion of nutrients - Accumulation of inhibitory metabolites - Exhaustion of space / lack of biological space

    log/exponential phase

  • 8

    Cells are in a steady state

    log/exponential phase

  • 9

    New cell material is being synthesized at a constant rate, but the new material is itself catalytic, and the mass increases in an exponentions manner.

    log/exponential phase

  • 10

    Continues until either one or more nutrients in the medium become exhausted or when toxic metabolic products accumulate and inhibit growth.

    log/exponential phase

  • 11

    Growth slows down due to nutrient depletion and formation of toxic products.

    stationary phase

  • 12

    The number of new cells produced balances the number of cells that die which results in a steady state.

    stationary phase

  • 13

    The exhaustion of nutrients or the accumulation of toxic products causes growth to cease completely.

    stationary phase

  • 14

    There is a slow loss of cells through death, which is balanced by the formation of new cells though growth and division.

    stationary phase

  • 15

    In stationary phase, the total cell count slowly ____, while the viable count stays constant.

    increases

  • 16

    Also called as the "decline phase"

    death phase

  • 17

    Characterized by an exponential decline or decrease in the number of viable bacteria.

    death phase

  • 18

    For a microbial cell, death means the _____ of the ability to reproduce

    irreversible loss

  • 19

    In death phase, after a period of time in the stationary phone, cell viability begins to ____ at a defined rate.

    decrease

  • 20

    Death rate ___ until it reaches a steady level.

    increases

  • 21

    Intense activity preparing for population growth, but no increase in population

    lag phase

  • 22

    There is a logarithmic or exponential increase in population

    log phase

  • 23

    Period of equilibrium where microbial deaths balqnce production of new cells

    stationary phase

  • 24

    Population is decreasing at a logarithmic rate

    death phase

  • 25

    The logarithmic growth in the log phase is due to reproduction by binary fission of bacteria and mitosis of yeast

    true

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    問題一覧

  • 1

    The period of little or no cell division so the population remains temporarily unchanged.

    lag phase

  • 2

    No apparent cell division occurs but the cells maybe growing in volume or size, synthesizing enzymes, proteins, etc., and increasing in metabolic activity in preparation for the next phase.

    lag phase

  • 3

    Period during which cells, depleted of metabolites and enzymes as a result of unfavorable conditions that existed at the end of their prenous culture history, adapt to their new environment.

    lag phase

  • 4

    Also called as the geometric growth phase

    log/exponential phase

  • 5

    Cells begin to divide and enter a period of growth or logarithmic increase.

    log/exponential phase

  • 6

    Cellular reproduction is most active during this period and generation time reaches a constant minimum.

    log/exponential phase

  • 7

    Cannot be continued forever in a batch because of: - Exhaustion of nutrients - Accumulation of inhibitory metabolites - Exhaustion of space / lack of biological space

    log/exponential phase

  • 8

    Cells are in a steady state

    log/exponential phase

  • 9

    New cell material is being synthesized at a constant rate, but the new material is itself catalytic, and the mass increases in an exponentions manner.

    log/exponential phase

  • 10

    Continues until either one or more nutrients in the medium become exhausted or when toxic metabolic products accumulate and inhibit growth.

    log/exponential phase

  • 11

    Growth slows down due to nutrient depletion and formation of toxic products.

    stationary phase

  • 12

    The number of new cells produced balances the number of cells that die which results in a steady state.

    stationary phase

  • 13

    The exhaustion of nutrients or the accumulation of toxic products causes growth to cease completely.

    stationary phase

  • 14

    There is a slow loss of cells through death, which is balanced by the formation of new cells though growth and division.

    stationary phase

  • 15

    In stationary phase, the total cell count slowly ____, while the viable count stays constant.

    increases

  • 16

    Also called as the "decline phase"

    death phase

  • 17

    Characterized by an exponential decline or decrease in the number of viable bacteria.

    death phase

  • 18

    For a microbial cell, death means the _____ of the ability to reproduce

    irreversible loss

  • 19

    In death phase, after a period of time in the stationary phone, cell viability begins to ____ at a defined rate.

    decrease

  • 20

    Death rate ___ until it reaches a steady level.

    increases

  • 21

    Intense activity preparing for population growth, but no increase in population

    lag phase

  • 22

    There is a logarithmic or exponential increase in population

    log phase

  • 23

    Period of equilibrium where microbial deaths balqnce production of new cells

    stationary phase

  • 24

    Population is decreasing at a logarithmic rate

    death phase

  • 25

    The logarithmic growth in the log phase is due to reproduction by binary fission of bacteria and mitosis of yeast

    true