A student claims that transcription factors, regulators, and activators only allow eukaryotic cells to turn on genes when they are needed, but do not help to shut down genes when the genes are not needed. Evaluate the accuracy of the student's statement. The statement is incorrect because transcription factors, regulators, and activators help shut down gene expression by their absence. The statement is incorrect because activators allow eukaryotic cells to turn on genes when they are needed, and transcription factors and regulators function to shut down genes when the genes are not needed. The statement is incorrect because some transcription factors, regulators, and activators can shut down some genes by binding to sites on DNA. The statement is accurate as written.
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Biology, 21.06.2019 13:30
Scientific thinking: what clues about biology might road kill provide?
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Biology, 21.06.2019 22:00
Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.
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Biology, 21.06.2019 23:10
Getting out of bed is the first goal i tackle each day. 2several small goals are achieved by me as the day progresses. 3when i am riding the bus home or walking the dog, i think about the bigger goals i have for my life. which statement correctly describes the verb tense, aspect, and voice in this paragraph? a.sentences 1 and 2 contain present progressive verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice. b.sentences 1 and 2 contain simple present verbs. sentence 3 contains present progressive verbs. all three sentences use active voice. c.sentences 1 and 2 contain present progressive verbs. sentence 3 contains simple present verbs. all three sentences use active voice. d.sentences 1 and 2 contain simple present verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice.
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Biology, 22.06.2019 05:30
Select the word from the list that best fits the definition a system made of 25 satellites
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A student claims that transcription factors, regulators, and activators only allow eukaryotic cells...
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