May 24, 2015

Posts by josh

Total # Posts: 1,615

At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.50 m/s^2. At the same instant, a truck, traveling with a constant speed of 15.4 m/s, overtakes and passes the automobile. How far...
September 12, 2006

An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 . in diameter. Find the x component of this runner's average velocity between points A and B. GOT THIS!!! 3.4 m/s Find the y component of this runner's average velocity ...
September 11, 2006

A 0.525 kg ball starts from rest and rolls down a hill with uniform acceleration, traveling 154 m during the second 10.0 s of its motion. How far did it roll during the first 4.00 of motion? I thought the answer was .2464 m, but it has been a couple of days, and I don't ...
September 11, 2006

A rock is thrown vertically upward with a speed of 11.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. In how many seconds after being thrown does the rock strike the ground? GOT THIS!!!! t=5.07s What is the speed of the rock just before it ...
September 11, 2006

Given seccant of thata = 3, use trigonometric identities to find the exact value of a- Cos thata b- tan squre of thata c csc (90 degree - thata) d- sin squre thata secTheta=3 but secTheta= 1/cosTheta solve for cosTheta Then, sin^2theta+ cos^2Theta=1 solve for sinTheta. then, ...
August 30, 2006

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 I would choose "d". Please check.
July 31, 2006

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-...
July 31, 2006

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-...
July 31, 2006

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 ______ ...
July 21, 2006

cell bio
The entire ATP apparatus is also called the ATP_______ I think it is Synthesis but not sure. ATP synthesis is a process. apparatus is a noun. you need a noun. ATP----------------? I can't seem to think of an appropriate word. Sometimes I seriously wopnder about the ...
July 20, 2006

Cell bio
The driving force of ATP synthesis at the location of the ATP synthesis complex is the _________________? I believe it is the matrix but am not sure and it is just a guess. please help. You are right, but I think they want mitochondria for an answer. If I was the teacher, I&#...
July 20, 2006

Insulin, antibodies, enzymes and progesterone are four of many molecules found in and around cells. Of these four__________ are/is not a protein. (Points: 4) a. antibodies b. insulin and antibodies c. antibodies and progesterone d. progesterone The reason you aren't ...
June 17, 2006

184 nucleotides are bonded in a linear array, forming a nucleic acid. How many molecules of water were formed as a result of this polymerization? (Points: 4) a. 183 b. 185 c. 92 d. 368 Hint: Nucleotides are linked together by dehydration synthesis to form polynucleotides. This...
June 17, 2006

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 acid residues of a protein combine with the ...
June 17, 2006

What is carbon cycling? A thing made out of carbon. It is in a shape like a circle.
June 14, 2005

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