-.-
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| show | multicellular
🗑
|
||||
| The maintenance of a constant environment in a cell is called ___________. | show 🗑
|
||||
| show | environmental
🗑
|
||||
| show | regulation
🗑
|
||||
| Eukaryotic cell mRNA transcripts tend to be very ______ and can remain in the cell for hours. | show 🗑
|
||||
| show | enhancer sequences within the DNA.
🗑
|
||||
| show | major groove of the DNA helix.
🗑
|
||||
| 9. Vertebrate cells apparently possess a protein that by binding to clusters of 5-methylcytosine ensures that the bound gene will stay in the "off" position. This control on the role of gene regulation is a result of | show 🗑
|
||||
| 10. Regulatory proteins shut off transcription by binding to a site immediately in front of the promoter and often even overlapping the promotor. This site is referred to as the | show 🗑
|
||||
| show | nucleosomes
🗑
|
||||
| show | homeostasis
🗑
|
||||
| show | specific transcription factors.
🗑
|
||||
| show | transcriptional control.
🗑
|
||||
| 15. A nucleosome contains ____ histones within its core | show 🗑
|
||||
| 16. The basic tool of genetic regulation is the ability of certain proteins to bind to specific | show 🗑
|
||||
| show | once a gene is turned off, it will remain off.
🗑
|
||||
| show | In bacteria it allows them to replicate without control.
🗑
|
||||
| show | promoter.
🗑
|
||||
| 20. Small RNAs, once thought to be of no importance in gene expression contain | show 🗑
|
||||
| show | double stranded RNA interference with mRNA.
🗑
|
||||
| 22. Proteins that bind to regulatory sequences have shapes that fit into the | show 🗑
|
||||
| 23. The DNA-binding proteins of almost all regulatory proteins employ one of a small set of shapes that enable them to fit into the major groove of DNA. These shapes are called | show 🗑
|
||||
| 24. All of the following are examples of shapes in regulatory proteins which are used to bind to DNA except the | show 🗑
|
||||
| show | repressor.
🗑
|
||||
| show | activator.
🗑
|
||||
| 27. A bacterial gene regulatory system is likely to have all of the following except | show 🗑
|
||||
| 28. Small RNAs can regulate gene expression. One type, called micro RNA (miRNA), acts by binding directly to | show 🗑
|
||||
| 29. The lac regulatory system is important to bacteria because the sugar lactose | show 🗑
|
||||
| 30. A well-understood transcriptional activator of E. coli, which initiates the transcription of genes in nonglucose environments, is called | show 🗑
|
||||
| 31. In eukaryotes, specific transcription factors have two distinct domains: | show 🗑
|
||||
| show | RNA polymerase must have access to the DNA double helix and also must be capable of binding to the gene's promoter.
🗑
|
||||
| show | entering the major groove of the DNA and reading the nucleotide base pairs.
🗑
|
||||
| show | inserting DNA-binding motifs into the major groove of the double helix where the edges of the nitrogen bases protrude.
🗑
|
||||
| show | trp operon.
🗑
|
||||
| show | lac operon.
🗑
|
||||
| show | have their transcription occurring in the nucleus and translation in the cytoplasm.
🗑
|
||||
| show | CAP molecule is bound to cAMP.
🗑
|
||||
| show | The primary transcript is a faithful copy of the entire gene including exons and introns.
🗑
|
||||
| 40. One of the DNA-binding motifs that contains a nearly identical sequence of 60 amino acids in many eukaryotic organisms is known as the | show 🗑
|
||||
| show | helix-turn-helix.
🗑
|
||||
| show | repressor
🗑
|
||||
| show | CAP
🗑
|
||||
| show | operon
🗑
|
||||
| show | operator
🗑
|
||||
| 46. A site at the 5' end of a gene to which RNA polymerase attaches to initiate transcription. | show 🗑
|
||||
| show | homeodomain
🗑
|
||||
| show | inducer.
🗑
|
||||
| 49. The lactose analog isopropyl-β-D-thio-galactoside (IPTG) is often used to regulate gene expression systems in bacteria. IPTG does not act as a substrate for β-galactosidase, but can bind to, and inactivate, repressor. In this case, IPTG serves as a(n) | show 🗑
|
||||
| 50. The main form of glucose repression of the lac operon is | show 🗑
|
||||
| 51. Which of the following statements regarding control of the lac operon and lactose utilization in bacteria is false? | show 🗑
|
||||
| 52. Mutations in the -35 region of the trp operon would | show 🗑
|
||||
| show | the operon is OFF in the absence of its regulatory protein.
🗑
|
||||
| 54. In eukaryotes, the binding of TFIID is followed by the binding of a number of other general transcription factors. Which of the following lists the correct order of binding of these factors? | show 🗑
|
||||
| 55. Your research project involves the characterization of a recently identified transcription factor. As part of your project, you want to determine if this transcription factor binds directly to any of the general transcription factors. Unfortunately, h | show 🗑
|
||||
| show | primarily upstream of the promoter; distance from the promoter does not matter.
🗑
|
||||
| show | coactivator.
🗑
|
||||
| show | TATA-binding protein TBP and TAFs.
🗑
|
||||
| 59. Which of the following statements regarding the eukaryotic transcription initiation complex is false? | show 🗑
|
||||
| show | chromatin remodeling.
🗑
|
||||
| 61. DNA methylation is the only known natural modification of DNA. It affects | show 🗑
|
||||
| show | be looking at a region of inactive chromatin.
🗑
|
||||
| show | allow us to turn specific genes on or off.
🗑
|
||||
| show | Use RNA interference to prevent mRNA translation.
🗑
|
||||
| show | miRNA and siRNA.
🗑
|
||||
| 66. The gene encoding apolipoprotein B exists in two isoforms, APOB100 and APOB48. These two forms are produced as a result of | show 🗑
|
||||
| 67. Production of the iron-storing protein ferritin is regulated by aconitase, which binds to a 30-nucleotide sequence at the beginning of the ferritin mRNA and interferes with ribosome binding. Aconitase is a | show 🗑
|
||||
| show | Ubiquitination of a targeted protein requires only one molecule of ATP.
🗑
|
||||
| 69. What is the difference between a gene that is derepressed and one that is induced? | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
ClaEsc