Bio Test 3 (Part 2) assesses understanding of genetic control mechanisms in bacteria, such as the lactose operon and the role of repressors. It covers key concepts like negative and positive control of operons and Lamarck's evolutionary theory, highlighting essential genetic regulatory knowledge.
The strong always survive, whereas the weak always die.
Some individuals have a better chance to produce more offspring.
Mutations are always harmful.
Acquired characteristics are inherited.
Reproduction of all members of a species is virtually the same.
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Structural genes are transcribed.
Lactose is broken down.
The lactose operon is repressed.
The regulatory gene is inactivated.
Lactose production is enhanced.
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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.
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Individuals.
Populations.
Kingdoms.
Phyla.
Animals only.
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Promoters
Repressors
Structural genes
Operators
All of these
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A strain of houseflies resistant to insecticides emerges.
Squirrels separated by a river are found to be unable to interbreed.
A son is born with a portion of his right index finger missing, the same portion severed from his father's hand in an accident.
A strain of houseflies resistant to insecticides emerges; and squirrels separated by a river are found to be unable to interbreed.
A strain of houseflies resistant to insecticides emerges; and squirrels separated by a river are found to be unable to interbreed; and a son is born with a portion of his right index finger missing, the same portion severed from his father's hand in an accident.
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Scavengers.
Morphological isolation.
Adaptive radiation.
Punctuated equilibrium.
The inheritance of acquired characteristics.
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Activated by a repressor protein.
Independent of glucose concentration.
Activated by the CAP.
Regulated by RNA polymerase.
All of these.
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Natural selection.
Catastrophism.
Inheritance of acquired characteristics.
Mutation.
Geographic distribution of organisms.
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Adaptation to the stress.
Development over a lifetime.
Inheritance at conception.
Mutation after birth.
All of these.
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