Recent content by outxbreak

She gave us no other context. :/ In order to measure total survival don't you need to have a survival plate (min+his) and then replica plate these survivors onto the mutant plate (min-his). This ensures that the mutants came from those survivors. I'm still not sure the total cells to...

Yeah I would have deleted this board but Idk how.

Hmm well replica plate from the survival plate (his+ min + glu) onto another plate (-his +min +glu) But I'm really confused as to how every time point had a survival plate with 10^7 survivors? I guess they started with something like 1*1014 cells and mutagenized them with UV... so is the...

1. About how many cells were plated to count His+ revertant colonies? How was total cell number determined? I know that the mutation freq was out of 10^7 survivors. So they had to measure the total cell number and come up with 10^7 survivors? But I'm not sure how they got this...

I'm not sure of the direction of the force in the coil.

Does it matter that the current through the coil flows downward?

Q: A coil is connected to a battery as shown in the figure and a bar magnet is suspended with its N pole just above the center of the coil. What will happen to the bar magnet just after the switch S is closed? Answer choices: It will be pulled toward the coil. It will be...

I have given up on this problem! Thanks anyways

I read my book again and the only thing I can imagine is that oxidation does not happen to the non-growing cells.. :/

I don't really know the answer. It makes since that UV could be repaired by other enzymes.. sorry I don't see how it's so "simple".

I'm guessing that is the UV damage? Thanks!

Q: Which of the following mutagenic treatments would be least effective in creating a mutation in non-replicating cells? Explain your choice. a. Treatment with a deaminating agent like nitrous acid b. Treatment with an alkylating agent like MMS c. Treatment by exposure to UV d...

yes.. the E field formula I put was a little messed up. but my initial formula took mass into account saying that Kinetic Energy is: 1/2mv2 I got the answer to E field with the formula and plugging in: Change in potential energy= (mass (vi2 -vf2)/(2q) (3.34*10^-27) ( (8.5 *10^5 m/s)2...

The E field was calculated by: Change in potential energy= sqrt (mass (vi2 -vf2)/(2q) which is 125,250 V/m This is also in the answer key so I'll go with it. I don't understand what formula to use. I can understand that in 0.02 meters the kinetic energy decreases 4*10^5 m/s so it...

So change in kinetic is just Vf-Vi or 4*10^5 m/s and work done by field is W=qED Setting these equal and solving for D 4*10^5=(3.2*10^-19)(125,250 V/m)x x=9*10^18 meters doesn't really make any sense