{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

LBL1_2010 - mRNA binds to the small subunit After mRNA...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Learn Before Lecture (LBL) 1 Worksheet:  Nucleus and Ribosomes (~20 min) Type your answers in the boxes provided. Upload your assignment as a word or pdf to your EEE Dropbox before 9 am on Mon, Oct. 4 th . Take the Lecture 4 online quiz (this material will be on the quiz!). Bring a copy of assignment with you to class. The nucleus is a membrane bound structure that contains the genetic library in all eukaryotic cells. Read pages 102-103, examine Figure 6.10 and answer the following questions. 1. What is chromatin? 2. What specific process takes place in the nucleolus, a specialized region within the nucleus? 3. What structure allows proteins and other large macromolecules to move into and out of the nucleus? Ribosomes are the organelles involved in the synthesis of all proteins. Ribosomes are made of two subunits, one large and one small (see fig. 6.11). These are found separately in the cytoplasm and they only combine when
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: mRNA binds to the small subunit. After mRNA binds, the large subunit binds and protein synthesis begins. Read the short section on ribosomes, pg 102-103, to find out where ribosomes go to finish protein synthesis, and answer the following questions. 4. Synthesis of all proteins begins first on free ribosomes (True or False). 5. If synthesis of a protein is completed by a free ribosome, where in the cell will the protein function? 6. If a protein is going to be secreted where will protein synthesis be completed? 7. To understand how secreted proteins are synthesized look carefully at Figure 17.21 in your text. In your own words , write 6 statements that describe each step shown in the process of a ribosome that is making a secreted protein. 1. 2. 3. 4. 5. 6....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern