March 29, 2015

Homework Help: Bio Bio

Posted by Christine on Saturday, July 22, 2006 at 2:11pm.

Please help me out with this:

You have just located a nucleolus in the nucleus. You are able to excise thsi area of the genome and express the genesof this chromosomal fraction in vitro (in a test tube). What genes would you most likely find expressed from this portion of the cell's DNA?

II. ribonsomal
III. cyclin
IV. cyclin dependent kinase

I am leaning more toward "IV" becasue cyclin denpendent kinases exhibit enzymatic activity only when they are bound to an activator (e.i. cyclin). Do you think my choice is correct.

Read the quote below and choose the answer you think is right. Post it here and I'll check it for you.

"The main role of the nucleolus is considered to be ribosome biogenesis, since its fundamental component rDNA codes for preribosomal RNA. Briefly, during synthesis of the rRNA, nucleotide modifications are made by small nucleolar RNPs (snoRNPs), and a number of proteins become associated with the rRNA transcript. The transcript is cleaved to separate the mature rRNAs, which leave for the cytosol through nuclear pores. These nuclear pores are known as the Nuclear Pore Complex (NPC)."


Answer this Question

First Name:
School Subject:

Related Questions

Bio Bio - You have just located a nucleolus in the nucleus. You are able to ...
nucleus true facts - is the nucleus always found in the center of the cell? I ...
Probability - 4.3. In a certain college town, 27.5 percent of the students ...
AP Bio - Please take a look at my AP bio question from last night. I still need ...
bio - what is the advantage of stopping mitosis at metaphase when making a ...
Ag Bio - I'm stuck on a few questions. If you can just answer what you can- 25. ...
Bio - I have a 67% in bio and our final exam is worth 30%. how much would I have...
Bio - Scientific name for cow liver (used for a bio lab)
application - i'm writing a officer aplication and need to write a bio, how long...
bio - last question about bio Explain the statement below: Biological ...