|
|
The letter A indicates _____. (Activity 19A) 
|
| supercoils |
| a nucleosome |
| a DNA double helix |
| histones |
| loops |
|
|
|
Where would RNA polymerase attach? (Activity 19A) 
|
| A |
| B |
| C |
| A and B |
| B and C |
|
|
|
The letter C indicates _____. (Activity 19A) 
|
| supercoils |
| a nucleosome |
| a DNA double helix |
| histones |
| loops |
|
|
|
What is this an image of? (Activity 19A) 
|
| supercoils |
| a nucleosome |
| a DNA double helix |
| histones |
| loops |
|
|
|
What is this an image of? (Activity 19A) 
|
| supercoils |
| a nucleosome |
| a DNA double helix |
| histones |
| loops |
|
|
|
Click on the diagram to begin the animation.
What name is given to this process? (Activity 19B)
|
| selective gene loss |
| gene amplification |
| DNA unpacking |
| rearrangement |
| DNA packing |
|
|
|
Rearrangement of the genome plays an important role in the _____ system. (Activity 19B)
|
| endocrine |
| reproductive |
| nervous |
| immune |
| respiratory |
|
|
|
Which of these animations illustrates selective gene loss?
You will need to click on each choice to view the animation. (Activity 19B)
|
| |
| |
| |
| |
| none of the above |
|
|
|
The process of transcription is indicated by the letter _____. (Activity 19C) 
|
| A |
| B |
| C |
| D |
| E |
|
|
|
The letter E is indicating a process of gene expression that involves _____. (Activity 19C) 
|
| transcription |
| breakdown of mRNA |
| translation of mRNA |
| protein breakdown |
| unpacking of DNA |
|
|
|
RNA processing is indicated by the letter _____. (Activity 19C) 
|
| A |
| B |
| C |
| D |
| E |
|
|
|
Which of the following processes is NOT indicated by the label A, B, C, D, or E? (Activity 19C) 
|
| translation |
| RNA transcription |
| export of mRNA |
| DNA unpacking |
| RNA processing |
|
|
|
_____ bind(s) to DNA enhancer regions. (Activity 19D)
|
| RNA polymerase |
| Promoters |
| Introns |
| Activators |
| Exons |
|
|
|
Click on the diagram to view the animation. What is the event that IMMEDIATELY follows the last event of this animation? (Activity 19D)
|
| unbending of the DNA and the release of RNA polymerase from the promoter |
| binding of the activators to enhancers |
| transcription |
| binding of mRNA to the smaller ribosomal subunit |
| binding of RNA polymerase to the promoter |
|
|
|
Which of these indicates an enhancer region? (Activity 19D) 
|
| A |
| B |
| C |
| D |
| C and D |
|
|
|
Which of these directly bind(s) to the promoter? (Activity 19D) 
|
| A |
| B |
| C |
| D |
| C and D |
|
|
|
How can a single RNA transcript lead to the translation of different proteins? (Activity 19E)
|
| The same RNA transcript may contain one of several different leaders. |
| The same RNA transcript may contain one of several different caps. |
| The same RNA transcript may be spliced in several different ways. |
| The same RNA transcript may contain one of several different promoters. |
| The same RNA transcript may contain one of several different trailers. |
|
|
|
The mRNA region to which this regulatory protein is bound is called the _____. (Activity 19E) 
|
| stop codon |
| trailer |
| leader |
| 3' end |
| poly(A) tail |
|
|
|
In the cytoplasm, the mRNA degradation begins at its _____. (Activity 19E)
|
| introns |
| cap |
| 5' end |
| poly(A) tail |
| exons |
|
|
|
A poly(A) tail's resistance to degradation is affected by the characteristics of the _____. (Activity 19E)
|
| trailer |
| promoter |
| stop codon |
| enhancer |
| leader |
|
|
|
Enzyme complexes that break down protein are called _____. (Activity 19E)
|
| lipases |
| ubiquitins |
| amylase |
| proteasomes |
| nucleases |
|
|
|
The nuclear membrane's role in the regulation of gene expression involves _____. (Activity 19F)
|
| protein activation |
| translation |
| protein degradation |
| regulating the transport of mRNA to the cytoplasm |
| RNA processing |
|
|
|
What is the function of a spliceosome? (Activity 19F)
|
| protein activation |
| translation |
| protein degradation |
| regulating the transport of mRNA to the cytoplasm |
| RNA processing |
|
|
|
Protein-phosphorylating enzymes' role in the regulation of gene expression involves _____. (Activity 19F)
|
| protein activation |
| translation |
| protein degradation |
| regulating the transport of mRNA to the cytoplasm |
| RNA processing |
|
|
|
_____ is a carcinogen that promotes colon cancer. (Activity 19G)
|
| fat |
| UV light |
| estrogen |
| a virus |
| testosterone |
