13 Jun Which of the following statements about nuclear transport is
Question
I have questions about cell biology.
1. Which of the following statements about nuclear transport is true? (I chose a)
a. mRNAs and proteins transit the nucleus through different types of nuclear pores.
b. “Nuclear import receptors bind to proteins in the cytosol and bring the proteins to the nuclear pores, where the proteins are released from the nucleus.”
c. “Nuclear pores have water-filled pass through in a nonselective fashion.”
d. Nuclear pores are made up of many copies of a single protein.
2. Which of the following statements is true? (I chose d)
a. “DNA molecules, like proteins, consist of a single, long polymeric chain that is assembles from small monomeric subunits.”
b. The polarity of a DNA strand results from the polarity of the nucleotide subunits.
c. There are five different nucleotides that become incorporated into a DNA strand.
d. Hydrogen bonds between each nucleotide hold individual DNA strands together.
3. What is the role of the nuclear localization sequence in a nuclear protein? (I chose c)
a. It is bound by cytoplasmic proteins that direct the nuclear protein to the nuclear pore.
b. It aids in protein unfolding so that the protein can thread through nuclear pores.
c. It is a hydrophobic sequence that enables the protein to enter the nuclear membranes.
d. It prevents the protein from diffusing out of the nucleus through nuclear pores.
4. How do changes in histone modifications lead to changes in chromatin structure? (I chose b)
a. They directly lead to changes in the positions of the core histones.
b. They change the affinity between the histone octamer and the DNA.
c. They help recruit other proteins to the chromatin.
d. They cause the histone N-terminal trails to become hyperextended.
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.