Explain the concept of combinatorial gene regulation in eukaryotes
What will be an ideal response?
Transcription of genes is activated by binding of transcription factors to promoters and other
regulatory sequences. Different genes require different combinations of these transcription factors for
their activation, and each transcription factor can activate multiple genes.
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An epithelial tissue containing a single layer of flattened cells is classified as ____
a. simple columnar epithelium b. stratified cuboidal epithelium c. stratified columnar epithelium d. stratified squamous epithelium e. simple squamous epithelium
Minerals required for bone formation include
A) zinc and potassium. B) calcium and sodium. C) calcium and phosphorus. D) calcium and zinc. E) iron and sodium.
Failure of the organs in the vestibular apparatus to function correctly can cause ____.
A. insensitivity to touch B. loss of hearing C. motion sickness D. inability to smell E. night blindness
Describe how tumor-suppressor genes keep cells in check
What will be an ideal response?