Which of the following are present in liver cells? Group of answer choices A. Promoters and enhancers for genes expressed in the liver. B. Promoters and enhancers for genes expressed in the kidneys. C. Activators and repressors for genes expressed in the kidneys.. D. A and B only E. A, B, and C
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Which of the following are present in your liver cells? a. enhancers of genes expressed in the kidney b. enhancers of genes expressed in the liver c. promoters of genes expressed in the kidney d. promoters of genes expressed in the liver e. All enhancers and promoters are present in liver cells
Madhur L.
A typical liver cell expresses the albumin gene, but does not express the crystalline gene that is expressed in lens cells of the eye. Which of the following statements explains why there is cell type-specific transcription? a) Both cells express the same genes, but albumin is quickly ubiquitinated in lens cells. b) There are different genes in liver cells and lens cells. c) There are different enhancer sequences in liver and lens cells. d) There are different miRNA sequences in liver and lens cells. e) There are different available activators in liver and lens cells.
Hem S.
Both liver cells and lens cells have the genes for making the proteins albumin and crystalline. However, only liver cells express the blood protein albumin and only lens cells express crystalline, the main protein in the lens of the eye. Both of these genes have enhancer sequences associated with them. The claim that gene regulation results in differential gene expression and influences cellular products (albumin or crystalline) is best supported by evidence in which of the following statements? A. Liver cells possess transcriptional activators that are different from those of lens cells. B. Liver cells and lens cells use different RNA polymerase enzymes to transcribe DNA. C. Liver cells and lens cells possess the same transcriptional activators. D Liver cells and lens cells possess different general transcription factors.
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