Exam 16: Control of Gene Expression

The most common DNA-binding motif is the

You are studying the effects of specific transcription factors on the activation of gene expression.You notice that one particular transcription factor binds far away from the promoter of its target gene.What can explain this?

The enzyme dicer chops dsRNA molecules into small pieces of

In multicellular organisms,the mechanism most directly responsible for directing development and maintaining homeostasis is gene

The enzyme beta-galactosidase acts on lactose to form galactose.In turn,the presence of galactose leads to expression of the enzymes responsible for the metabolism of galactose.In this case,lactose is serving as a carbon source and as a(n)

When E.coli cells produce the amino acid tryptophan,a cluster of five genes is transcribed together.This cluster of genes is referred to as the

In some organisms,the primary function of a gene in a cell is to participate in regulating the body as a whole rather than responding to the cell's immediate environment.These organisms would be

Examples of shapes in regulatory proteins that are used to bind to DNA include (check all that apply)

Vertebrate cells possess a protein that binds to clusters of 5-methylcytosine and ensures the gene will stay in the "off" position.This control of gene regulation is a result of

A protein that regulates transcription by binding to the operator is known as the

Regulatory proteins can identify specific sequences on the DNA double helix without unwinding the helix.This is accomplished by inserting

The primary transcripts in eukaryotes are most accurately described as

The progesterone receptor (PR)is a steroid hormone receptor and transcription factor.The protein SRC-1,which does not bind DNA by itself,can bind to PR and increase expression of genes regulated by PR.Based on this information,SRC-1 is best described as a(n)

The basic tool of genetic regulation is the ability of certain proteins to bind to specific

The p300/CBP (CREB-binding protein)proteins are histone acetyltransferases that help regulate the transcription of many genes.Based on this information you can conclude that these proteins

The TFIID complex is formed by

In your research,you have discovered that Protein X is often ubiquitinated in people with a certain disease.What would you predict about levels of Protein X in these patients?

What is the difference between a gene that is derepressed and one that is induced?

As a microbiologist you have been asked to investigate the regulation of a novel gene in a bacterial species.Given what is known about bacteria,the logical place to begin your investigation is

You are working to identify enhancer regions of a particular gene.The best place to look is