The process of making an RNA copy of a gene is called ________.
Fill in the blank(s) with the appropriate word(s).
Ans: transcription
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In an experiment similar to that performed by Shatkin and colleagues, a student synthesized mRNAs such that 32P-GTP was incorporated; 7-meG labeled with 3H was used to cap the mRNA
A fraction of the sample was run on a gel and confirmedthat radiolabeled capped transcripts had indeed been produced. The remainder of mRNA was incubated with wheat germ cell extract to allow binding to ribosomes. The sample was deposited at the top of a sucrose density gradient and spun in a centrifuge. Surprisingly, neither label comigrated with the ribosome fraction; the ribosomes did migrate as expected. What is the most likely reason for this result? A. The ribosomes did not incorporate the 3H label. B. The sucrose gradient was not made correctly. C. The wheat germ was contaminated with guanylyltransferase. D. The wheat germ was contaminated with RNase E. The centrifuge did not spin at the correct speed.
Addison's disease is a disorder of the adrenal glands which can progress to a severe illness which may include very low blood pressure and coma. Addison's disease is a disease of which organ system?
A. Circulatory system B. Respiratory system C. Integumentary system D. Endocrine system
The rungs of the DNA ladder are formed by base pairs
a. joined by covalent bonds. b. joined by hydrogen bonds. c. joined by ionic bonds. d. NOT joined to each other
Interleukins activate and direct the movement of white blood cells from the blood to the tissues
____________________ Indicate whether the statement is true or false.