Biology, 28.11.2019 01:31 Reebear8372
U937d cells express high levels of creatine kinase (ck‑b) mrna but do not translate the mrna into protein. ribosomes bind the 5' end of the ck‑b mrna; however, translation into protein is repressed in these cells. u937d cells synthesize the ck‑b enzyme when researchers introduce numerous short segments of rna containing 3' utr consensus sequences into the cells. the total amount of ck‑b mrna does not change after adding rna containing 3' utr sequences. introducing short rna segments without the 3' utr consensus sequences does not stimulate ck‑b synthesis. which of the statements explains how the introduction of short rna containing 3' utr sequences allows ck‑b translation in u937d cells? .explain how the introduction of short segments of rna containing the 3'utr sequences might remove the inhibition.
Answers: 3
Biology, 22.06.2019 13:30
Which plate boundary causes plates to collide forming mountain ranges, volcanoes, and island arcs? give an example of this type of plate boundary. 2. at which plate boundary do rifts and mid-oceans ridges form? give an example of this type of plate boundary. 3. at which plate boundary do plates slide past each other while moving in opposite directions? give an example of this type of boundary.
Answers: 1
Biology, 22.06.2019 14:00
Homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?
Answers: 1
Biology, 22.06.2019 16:20
Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.
Answers: 2
Biology, 22.06.2019 18:00
How do bacteria protect their genetic material and cytoplasm during harsh conditions
Answers: 1
U937d cells express high levels of creatine kinase (ck‑b) mrna but do not translate the mrna into pr...
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