Number of results: 146
I have a hard time with this question. Please help. One way to determine the concentration of protein in a solution is to perform a "protein assay". There are several assay kits on the market that one can use, but they all rely on the common paradigm that the aromatic amino ...
Saturday, June 17, 2006 at 5:26pm by Jamshid
Please help with this question. Insulin, antibodies, enzymes and progesterone are four of many molecules found in and around cells. Of these four__________ are/is not a protein. a. antibodies b. insulin and antibodies c. antibodies and progesterone d. progesterone I think the ...
Saturday, June 17, 2006 at 5:29pm by Jamshid
so the question is : List three different factors which influence the rate of enzyme activity and specifically explain each factor’s influence on enzyme activity. My answer: Since enzymes are proteins, they are very sensitive to environmental conditions. The very nature of ...
Thursday, June 29, 2006 at 10:35am by bobs
The theory of ATP synthesis by the ATP synthesis apparatus is called the _______ theory. I have no idea. Can some please help? Go to www.google.com and type in "ATP synthesis" without the parentheses. I think you will find your answer about four or five references from the top...
Thursday, July 20, 2006 at 5:05pm by shamaev
The mRNA sequence of nucleotides for gene "Y" has been determined to be AGCCAUGCCCGCGAGGUAGAAA. You have decided to mutate the gene, such that a new and functional protein is expressed from this gene. To do this, you have placed the nucleotide sequence_______ after the codon ...
Thursday, July 20, 2006 at 8:25pm by Shamaev
Griffith's experiments along with Avery, MacLeod and McCarty helped to determine the transforming factors of Pneumococcus bacteria. Using heat-killed S-strain bacteria and one particular fraction of the cell lysates, they were able to demonstrate that _____ and not ______ was ...
Saturday, July 22, 2006 at 11:21pm by Sara
k PGAL may be converted to glucose phosphate right? what other products can be produced???? Glyceraldehyde 3-phosphate can be converted to dihydroxyacetone phosphate, and these two molecules can be joined by aldolase to form fructose 1 ... glyceraldehyde 3-phosphate can be ...
Tuesday, July 25, 2006 at 8:26pm by big head
I can't figure out the correct answer for this, please help. The drosophila embryo goes through a series of mitotic divisions before cytokinesis occurs. This demostrates one of the following. 1: cytokinesis is inextricably associated with mitosis 2. mitosis is always followed ...
Monday, July 31, 2006 at 8:30pm by Sarah
Enhancers and promoters are ______. In contrast, the heterodimer "TFIIA and TFIIB" are examples of __________. a. trans-acting elements, cis-acting factors b. cis-acting elements, trans-acting factors c. cis-activating factors, trans-acting elements d. trans-activating factors...
Tuesday, August 1, 2006 at 11:12am by Sarah
For membrane-associated proteins, the consensus sequence _______ is found on the inchoate (new) polypeptide and ______ to halt. a. pribnow, replication b. signal peptidase, transcription c. stop-transfer peptide, transcription d. stop-transfer sequence, translation e. stop-...
Tuesday, August 1, 2006 at 11:15am by Sarah
The number _____ and _____ sign are assigned to the first nucleotide of a transcriptional unit. a. 0, positive b. 1, negative c. 1, positive d. 0, no sign No idea what the answer might be. Since this is not my area of expertise, I searched Google under the key words ""first ...
Tuesday, August 1, 2006 at 11:17am by Sarah
Can someone please help me find, or know of any molecules that are at least 20 bases (carbons, nitrogens..) long and have 3 hybrids (sp, sp2, dsp)
Thursday, December 28, 2006 at 10:08pm by Kara
calculate the pH of 0.0076M KOH
Friday, September 7, 2007 at 4:08am by CHEM
pOH= -log(.0076) and pH= 14 -pOH
Friday, September 7, 2007 at 4:08am by bobpursley
I have to memorize the 20 amino acids and some nucleotides...do you know where I can find some mnemonic tips for this???
Wednesday, September 12, 2007 at 2:50pm by Julie
Frankly, I recommend flash cards. They are easy to make, efficient, and have a proven record.
Wednesday, September 12, 2007 at 2:50pm by bobpursley
Acid base Chenistry Homework help!? Histidine was electrophoresed in polyacrylamide at pH 6.0 with alanine (pI=6.0) and arginine (pka's 2.2, 9.0, and 12.5). At the end of the experiment, arginine had migrated toward the cathode 6.0 cm, alanine was still at the origin, and ...
Sunday, September 23, 2007 at 10:28am by Mae
Biochem (plz help)
The following data describe the binding of oxygen to human myoglobin at 37oC. P02 (mm Hg) = 0.5 1 2 3 4 Theta = .161 .277 .434 .535 .605 P02 (mm Hg) = 6 8 12 20 Theta = .697 .754 .821 .885 From these data, estimate: a). P50 b) the fraction saturation of myoglobin at 30 mm, the...
Friday, September 28, 2007 at 12:03pm by Gulzaman
i don't understand this why can carboxyl and phosphate groups act as acids? as in, what makes an acid?
Thursday, October 18, 2007 at 9:45pm by J
Since this is not my area of expertise, I searched Google under the key words "HIV 'reverse transcriptase'" to get these possible sources: http://en.wikipedia.org/wiki/Reverse_transcriptase http://www.cellsalive.com/hiv2.htm http://www.biochem.ucl.ac.uk/bsm/xtal/teach/repl/rt....
Thursday, January 3, 2008 at 7:07pm by PsyDAG