Recent content by instantresults

I thought that a gene by definition is a unit of heredity, so a portion of DNA that doesn't code for anything wouldn't be a unit of heredity and therefore shouldn't really be called a gene, no? Also if current estimates for protein coding genes in human genome is about 20000, how many total...

Wikipedia says that the steric hindrance makes this a weak nucleophile, but what exactly is it about the N's that is sterically hindered? I realize that the N's are bonded covalently 3 times so each N has a lone pair e-, but is it the location on the ring that makes for steric effects for this...

Homework Statement A chemist dissolves 16mmol of a nucleoside diphosphate, CDP, in 1L of an aqueous solution containing Mg2+ and buffers the solution at pH 8.7. The chemist monitor the reaction by measuring the amount of inorganic phosphate produced. No reaction is detected for 30mins, then the...

What exactly is the difference between something like (XY)2 and 2XY? I get that the 2XY would indicate 2 moles of XY, but I don't see why (XY)2 wouldn't be the same thing, so long as the whole formula is surrounded by parenthesis? thanks for any help

Homework Statement a 6.57g sample of NiSO4*6H2O (molar mass 262.84) is dissolved in enough water to make 50.00mL of a green solution and 7.15g of Na2CO3*10H2O (molar mass 286.14) is dissolved in enough water to make 50.00mL of a colorless solution. The two solutions are mixed and a green...

The linked wiki page states that "..However, this represents absorption and re-radiation delay between atoms, as do all slower-than-c speeds in material substances. ..."these experiments refers only to light being stored in the excited states of atoms, then re-emitted at an arbitrarily later...

As I understand it light is refracted when entering a different medium (like from air to glass to air) because it moves slower through the glass, so it will go through the glass in as least time possible , so it bends toward the normal so it can traverse the glass quickly (if that's right word...

If you were to tell a story that has some moral lesson in it, is the "moral of the story" an inductive conclusion? For example, many versions of Aesop's fables include a short moral of the story at the end of it. Is that a type of inductive conclusion? I understand induction as moving from...

Thanks for the reply phyzguy. When the electron gets ejected from the cathode, that = the current getting across the gap. So (if that's true) wouldn't that mean that there couldn't be a 0.5A current flowing?

Homework Statement A vacuum photodiode detector utilizes the photoelectric effect to detect light. The photoelectric effect causes electrons to be ejected from a metal plate when photons of light are absorbed by the metal. The energy of a photon is given by the equation E = hf, where h = 6.6 x...

Lab manual is confusing me, and I'm not sure if its actually wrong, or the wording is bad, or if this is because I'm not understanding something. It says: "Before a broth can be tested for nitrate reductase activity it must be examined for evidence of denitrification. This is simply a visual...

Homework Statement I need help creating flowchart for ID-ing an "unknown" organism. Unknown in quotes because I already know ID of organism. Homework Equations gram + (purple) tetrads and cocci forms yellow colonies on NA plate catalase + coagulase - Nitrate + oxidase (weakly) + Bacitracin...