Biology

Biology, 08.07.2019 14:00, TerronRice

Ascientist shines ultraviolet light on a colony of blue colored bacteria. she then places colonies of the bacteria in separate petri dishes. after allowing the bacteria to replicate for several generations, the scientist observes that some of the dishes now contain colonies with purple and red colored bacteria. what can be concluded from this observation?

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Biology, 04.07.2019 04:00, heatherballiet866

Ascientist shines ultraviolet light on a colony of blue colored bacteria. she then places colonies of the bacteria in separate petri dishes. after allowing the bacteria to replicate for several generations, the scientist observes that some of the dishes now contain colonies with purple and red colored bacteria. what can be concluded from this observation? a. asexual organisms will undergo genetic changes if placed in a petri dish. b. mutations lead to genetic variation in organisms that reproduce asexually. c. genetic changes are always harmful to organisms that reproduce asexually. d. organisms undergo mutations to become better suited to their environment.

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Biology, 09.07.2019 02:30, sibbietiggy9372

In an experiment to study the effect of ultraviolet light on bacteria, it was concluded that ultraviolet light has a sterilizing effect on bacteria. which of these observations could have led to this conclusion? a) ultraviolet light stopped the replication process of bacteria. b) bacterial colonies exposed to ultraviolet light continued to replicate. c) bacterial colonies exposed to ultraviolet light became resistant over time. d) ultraviolet light increased the rate of binary fission in the bacterial cells.

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Biology, 11.07.2019 04:20, pollywallythecat

Ascientist shines ultraviolet light on a colony of blue colored bacteria. she then places colonies of the bacteria in separate petri dishes. after allowing the bacteria to replicate for several generations, the scientist observes that some of the dishes now contain colonies with purple and red colored bacteria. what can be concluded from this observation? a. asexual organisms will undergo genetic changes if placed in a petri dish. b. organisms undergo mutations to become better suited to their environment. c. mutations lead to genetic variation in organisms that reproduce asexually. d. genetic changes are always harmful to organisms that reproduce asexually. reset next

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Biology, 03.08.2019 03:30, vanessasmith47

In an experiment to study the effect of ultraviolet light on bacteria, it was concluded that ultraviolet light has a sterilizing effect on bacteria. which of these observations could have led to this conclusion? a) ultraviolet light stopped the replication process of bacteria. b) bacterial colonies exposed to ultraviolet light continued to replicate. eliminate c) bacterial colonies exposed to ultraviolet light became resistant over time.

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