Biology
Biology, 04.08.2019 15:30, angie0000

What regulates the expression of most eukaryotic genes? dicer enzymes silencing complexes transcription factors mirna

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Biology, 01.08.2019 05:20, maggie9459
The dna-binding proteins that recognize and accurately initiate transcription at specific eukaryotic promoter sequences are called: a. enhancers. b. transcription factors. c. response elements. d. chromatin-remodeling complexes. e. all are true.
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Biology, 30.09.2019 19:00, shongmadi77
Anonymous 4 years ago 1. gene regulation in eukaryotes (1 point) usually involves operons. is simpler than in prokaryotes. allows for cell specialization. includes the action of an operator region. 2. specialized cells regulate the expression of genes because they (1 point) do not want the genes to become worn out. cannot control the translation of proteins. do not carry the complete genetic code in their nuclei. do not need the proteins that are specified by certain genes. 3. what is one difference between transcription factors and mirna (interference rna)? (1 point) mirnas are mobile chemical messengers, while transcription factors are not. transcription factors work at halting transcription, while mirnas work at destroying the products of transcription. mirnas bind to dna, while transcription factors do not. transcription factors control eukaryotic gene regulation, while mirnas control prokaryotic gene regulation. 4. why does it take only a few homeotic genes to control the development of a eukaryote? (1 point) because each homeotic gene begins a cascade of events that leads to the formation of a specific body part because eukaryotes have surprisingly small numbers of genes in any one cell because each cell receives only a fraction of the total number of genes in the organism all of the above are correct. 1. c 2. d 3.b 4.a these are the correct
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Biology, 17.10.2019 01:10, kdior27
In what way is eukaryotic transcription more complex than prokaryotic transcription? a. eukaryotes have three different rna polymerases, whereas porkaryotes only have one rna polymerase. b. eukaryotic transcription initiation is much more complex than prokaryotic initiation because of the various transcription factors involved c. upstream elements are required for efficient transcription in eukaryotic cells, but these elements are not usually necessary in prokaryotes. d. eukaryotic mrna is made in the nucleus e. all of the above statements outline ways that eukaryotic transcription is more complex
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Biology, 24.10.2019 05:00, yasirtgesmartkid
Identify the true statements about rna interference. select all the true statements. a. mirna is cleaved by dicer enzyme complex b. duplex rna (dsrna) can suppress the expression of a gene. c. mirnas are short duplexes approximately 21 nucleotides long d. mirnas suppress gene expression by interfering with transcription e. rna interference can temporarily suppress the expression of a target genes (i think a and c and e are true. i doubt that b is right because rna need to be single strand to be read, not sure about d)
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