Essays Tagged: "Gene expression"

Steroid and non-steroid hormones differ in how they affect target cells. Describe the mechanisms involved using specific examples of each. How is it that hormones affect some cells and not others?

nsulin, norepinephrine, serotonin, and vasopressin.Steroid hormones, like estrogen, directly affect gene expression in their target cells. These hormones are lipid soluble and can diffuse directly thr ... steroid hormones and receptors are bound together, the hormone receptor complex activates specific genes and cause those genes to be expressed. In the case of estrogen, the ovaries are stimulated to ...

(1 pages) 25938 2 3.8 Jan/2003

Subjects: Science Essays > Biology > Human Biology

Biology study notes - Proteins, RNA, and Mutations.

Proteins are not built directly form genes. The working instructions of the genes are made of molecules of ribonucleic acid, or RNA. RNA, ... types of RNA, are essential for processing the information from DNA into proteins, a process called gene _expression. Gene _expression occurs in two stages - transcription and translation. In transcri ... to mRNA. In translation, the information in mRNA is used to make a protein.After transcription, the genetic message is ready to be translated form the language of RNA to the language of proteins. The ...

(2 pages) 85 2 3.5 Sep/2003

Subjects: Science Essays > Biology > Human Biology

Transfected Cell Microarrays

ith DNA oligonucleotides complimentary to the template strand of the full compliment or a subset of genes from a given organism, which are then UV-crosslinked to the slides. mRNA is isolated from the ... n spot therefore indicates that it is likely that in organisms under "green sample" conditions, the gene corresponding to both the oligonucleotide and cDNA is upregulated relative to the organisms und ...

(3 pages) 25 0 4.0 Feb/2004

Subjects: Science Essays > Biology

Auxin - Plant Hormone

Hormone signaling is involved in all biological system. Hormones in general control the physical and emotional responses of an organism. A specific example of a hormon ... xin binding protein 1). The binding of auxin to ARF1 (Auxin response factor 1) can also affect the gene transcription process; this overall affects the gene expression in the plant (Kimball).In re ... rtant auxin produced by plants is called indole-3-acitic acid (IAA); this is encoded by the AUX/IAA gene, and is indispensable for plant growth and development. The hormone rapidly and specifically a ...

(6 pages) 38 0 4.0 May/2004

Subjects: Science Essays > Biology > Plant Biology

Nurture As It Relates To Development

someone to understand how nurture is related to development, it must first be defined. Nurture is a general term for all the environmental influences that affect development after an individual is con ... ss. The process of development requires knowledge, ranging from the most fundamental level, that of gene expression and interactions between molecules and cells, all the way up to the highest levels o ...

(3 pages) 27 0 0.0 Jun/2005

Subjects: Social Science Essays > Psychology

HSC Biology Syllabus - Genetics: The Code Broken? (Option) - All Dot Points Answered

9.7 - Genetics: The Code Broken? (Option)1. The structure of a gene provides the code for a polypeptide:&b ... quence of amino acids in a polypeptide:-The structures involved in polypeptide synthesis are:DNA: A gene contains a sequence of bases to code for a protein. Every set of 3 bases is called a codon.RNA: ... here is uracil. There are 3 forms involved in polypeptide synthesis:mRNA: Messenger RNA carries the genetic code outside the nucleus, into the cytoplasm, where it can be read by ribosomestRNA: Transfe ...

(28 pages) 75 0 5.0 Jun/2007

Subjects: Science Essays > Biology


64, No. 11, pp895-904, 1999 Scientific Problem: Characterizing the effects of dexamethasone on ODC gene expression and enzyme activity in the lung of rat pups.Facts Pertaining the Problem: Numerous s ...

(1 pages) 7 0 0.0 Feb/2008

Subjects: Science Essays > Biology

The success of cloning Dolly the sheep five years ago

mice are severely compromised. The study consisted of DNA microarray technology, where over 10,000 genes from liver and placenta cells from cloned mice were analyzed and found that up to four percent ... arts. Jaenisch says that the apparent problem of the clone is from changes in the normal program of gene activation, or expression. The gene activation or expression led researchers back to the DNA mi ...

(2 pages) 1570 0 0.0 Feb/2008

Subjects: Science Essays > Genetics & Genome Projects

Escherichia Coli Absorbancy of Green Florescent Protein through Heat Shock

tors are not needed to fluoresce, so the GFP is quite versatile. It also can be used to monitor the gene expression or protein localization in living organisms without damage to the cells. (Chalfie 19 ... additions and were incubated in the chillete for 25 minutes after the final mixture was prepared.A general heat shock procedure was followed. From the chillete, the tube was distinctly moved to the n ...

(6 pages) 15 0 3.0 Oct/2008

Subjects: Science Essays > Biology

The Use of the Green Fluorescent Protein and Its Application in the Study of Biochemistry

p.44). This Northern Atlantic organism is highly organized in structure, with an amazing ability to generate and emit green fluorescent light from photocytes at the margin of its umbrella, making it a ... cells allows for numerous applications of GFP (Yang F. et al. 1996, p.1246) such as a reporter for gene expression, as well as a marker to study cell lineage during development. Thus, its ability to ...

(7 pages) 32 0 0.0 Aug/2009

Subjects: Science Essays > Biochemistry

Gap Analysis: Intersect Investments

ysis: Intersect InvestmentsUniversity of PhoenixGap Analysis: Intersect InvestmentsIntroduction:The GeneOne Senior Management could have provided a more efficient and effective direction by working to ... e a clear, comprehensive, and attainable implementation plan on how to move forward internally. The GeneOne Senior Management has the foundation, experience and drive to use their available resources ...

(10 pages) 26 0 0.0 Mar/2010

Subjects: Businesss Research Papers > Management > Management Planning & Decision Making

External Factors and Their Influence on Gene Expression

External Factors and their Influence on Gene ExpressionBy Jessica SaxtonAbstractThe discovery of DNA as the source of heredity and genetics ... the source of heredity and genetics opened countless doors for the development of more theories on genetics. Through the development of the known genetic code, scientists are able to compare what is ... ts are able to compare what is known to what is being expressed. Because there is a universally set genetic code, yet we are all different, there must be another factor in DNA and the way we are. This ...

(7 pages) 1 0 0.0 Mar/2014

Subjects: Science Essays > Biology