Closed

[Myka]

notsmall I see what youre saying....and Im not going to kill myself...but seriously no one would care...seriously.....but no Im not going to do it..I will see what this world has for me

[Myka]

nova did you abandon me

[novastepp]

B!!!!!!!!!!

[NotSmall]

notsmall I see what youre saying....and Im not going to kill myself...but seriously no one would care...seriously.....but no Im not going to do it..I will see what this world has for me

Good, I was hoping you were joking but didn't want to ignore it just in case.

I seriously doubt that no one cares about you, it just seems that way sometimes.

[Myka]

want to do a few more?

[novastepp]

i care about you. and yeah bring em on.

[Gra]

notsmall I see what youre saying....and Im not going to kill myself...but seriously no one would care...seriously.....but no Im not going to do it..I will see what this world has for me

Don`t say that. I`m sure alot of people would care. ****, Even I care.

[Myka]

I appreciate that notsmall...many would just disregard it...some ppl just ignore things because they either dont care or dont understand...

[Myka]

hehe..this isnt cheating ahha..(you did #3)

The main mechanism which is used to denature DNA in the PCR technique is to
__________.

a. Pack the DNA in ice
b. Lower the pH of the solution
c. Heat the solution
d. Disolve in ethanol

Save answer


Question 2 (1.0 points)
All new DNA polymers are made in the _______ to _______ direction.

a. 3' to 5'
b. 5' to 3'
c. 3' to 1'
d. 5' to 1'

Save answer


Question 3 (1.0 points)
When DNA is replicated, one strand must be made discontinuously because the direction of the strand relative to the direction of movement of the DNA polymerase is _____.

a. 3' to 5'
b. 5' to 3'
c. 5' to 1'
d. 3' to 1'

Save answer


Question 4 (1.0 points)
When DNA is replicated, the continuous strand is read by the DNA polymerase enzyme in the _________ direction

a. 3' to 5'
b. 5' to 3'
c. 5' to 1'
d. 3' to 1'

Save answer


Question 5 (1.0 points)
A protein which opens the DNA helix at the replication fork is called ______?

a. helicase
b. replicase
c. forkase
d. splitase

Save answer


Question 6 (1.0 points)
The last bond made to completely join two fragments on the discontinuous strand is made by a small enzyme called _________.

a. helicase
b. primase
c. exonuclease
d. ligase

Save answer


Question 7 (1.0 points)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a conservative manner what type of bands would they have seen in their centrifuge tubes after one cell division?

a. One band at the top
b. One band at the bottom
c. Two bands - one at the top and one at the bottom
d. A band in the middle

Save answer


Question 8 (1.0 points)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a dispersive manner what type of bands would they have seen in their centrifuge tubes after one cell division?

a. One band at the top
b. One band at the bottom
c. Two bands - one at the top and one at the bottom
d. A band in the middle

Save answer


Question 9 (1.0 points)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a dispersive manner what type of bands would they have seen in their centrifuge tubes after two cell divisions?

a. One band at the top
b. One band at the bottom
c. Two bands - one at the top and one at the bottom
d. A band in the middle

Save answer


Question 10 (1.0 points)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a semi-conservative manner what type of bands would they have seen in their centrifuge tubes after two cell divisions?

a. One band at the top
b. One band at the bottom
c. Two bands - one at the top and one at the bottom
d. A band in the middle
e. Two bands - one at the top and one in the middle

Save answer


Question 11 (1.0 points)
Newly replicated DNA on the discontinuous strand is made in short bits (1000 bases). These short pieces are called __________.

a. Kawasaki fragments
b. Okazaki fragments
c. Bitty bits
d. DNA bits

Save answer


Question 12 (1.0 points)
Newly replicated DNA on the discontinuous strand is made in short bits (1000 bases). These short pieces will later be modified as ________ removes the primers and fills in the gaps with the exception of the last link.

a. RNA Polymerase
b. primase
c. exonuclease
d. helicase

Save answer


Question 13 (1.0 points)
A technique used to increase the amount of DNA in a certain region flanked by artificial primers is called _______?

a. PCR
b. ACR
c. DNAA
d. PBS

Save answer


Question 14 (1.0 points)
The enzyme___________lays down a short _______ sequence which is used by DNA Polymerase III to start replicating a DNA template strand.

a. helicase ..... DNA
b. helicase ......RNA
c. primase ......DNA
d. primase......RNA

Save answer


Question 15 (1.0 points)
Proteins that protects single stranded DNA during replication are called _____.

a. Helicase
b. replicase
c. single strand binding proteins
d. thermophillic proteins

[Myka]

Don`t say that. I`m sure alot of people would care. ****, Even I care.

thanks gra....you guys actually do care about me...sorry if I sound like a jackass sometime

[Myka]

nova is my new best friend...............but please dont point out that I didnt have one in the first place

[Myka]

I think next sunday for my cheat meal...I will have a chocolate cake and a tub of icecream...bwaahahhaa

[Myka]

notsmall left when he found out I wasnt gonna kill myself...

[NotSmall]

notsmall left when he found out I wasnt gonna kill myself...

Well I was hoping for a bit of drama....

[Myka]

uh oh notty Im slipping again.....depression.....has me...........taking...hold

[Myka]

I had premarital sex with my lady professor..........................

[NotSmall]

I had premarital sex with my lady professor..........................

FANTASTIC!

[NotSmall]

uh oh notty Im slipping again.....depression.....has me...........taking...hold

Pull yourself together man!

[Myka]

I had to go in her office to talk about how I had missed an exam...then I jokingly said she should take it out of my average...then I said something about blondes and she said she doesnt like blondes (I have black hair)...and she looked at me funny..now I feel dirty

[novastepp]

ok i went through it briefly and we need to creect #3. here is what i got real quick i'll go back through though.
1-
2-B
3-A
4-A
5-A
6-D
7-10-
11-B
12-i think...A
13-A ploymerase chain reaction
14-it is either c or d, i am leaning towards D
15-not sure yet

[Myka]

nova are you actually working on these?? ahaha...your awesome!! I will send naked pics to you

[novastepp]

15=c

[Myka]

those look good to me nova

[novastepp]

are questions 8&9 seriously the same?

[novastepp]

7-10 i don't know and wouldn't know where to look. sorry man let me get 1 real quick.

[Myka]

ROFL...yeah I guess so...didnt notice that..but sometimes he does that ahahaha

[novastepp]

ok if my mind serves me right i think 1=B

[Gra]

thanks gra....you guys actually do care about me...sorry if I sound like a jackass sometime

We all have bad days sometimes. Butif you really are depressed, you should get some help. It gets much easier that way.

[novastepp]

nahh f*ck me its C

[Myka]

yes I should get help..but Im not in a position to do that right now ($$$)...my sister has money and she has had many sessions and it seems to be helping her...I will just have to wait till I can afford it...

[novastepp]

ok now u know i love you, time to cram a meal and last minute studying before my final at 4. i'll holla. and Myka, you kick ass man.


an abundance of ass...


lover

[Myka]

cool cool...should I just guess on the others?

[Myka]

Thanks nova *leans over to kiss but you pull away*

[Gra]

yes I should get help..but Im not in a position to do that right now ($$$)...my sister has money and she has had many sessions and it seems to be helping her...I will just have to wait till I can afford it...

Thats bad, should be covered by incurance or something.

[Myka]

here is your grade card ahaha

Question 1 (1 point)
The main mechanism which is used to denature DNA in the PCR technique is to
__________.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. Pack the DNA in ice
0.0% b. Lower the pH of the solution
100.0% c. Heat the solution
0.0% d. Disolve in ethanol



Score: 1 / 1

Question 2 (1 point)
All new DNA polymers are made in the _______ to _______ direction.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. 3' to 5'
100.0% b. 5' to 3'
0.0% c. 3' to 1'
0.0% d. 5' to 1'



Score: 1 / 1

Question 3 (1 point)
When DNA is replicated, one strand must be made discontinuously because the direction of the strand relative to the direction of movement of the DNA polymerase is _____.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. 3' to 5'
100.0% b. 5' to 3'
0.0% c. 5' to 1'
0.0% d. 3' to 1'



Score: 0 / 1

Question 4 (1 point)
When DNA is replicated, the continuous strand is read by the DNA polymerase enzyme in the _________ direction

Student response: Percent
Value Correct
Response Student
Response Answer Choices
100.0% a. 3' to 5'
0.0% b. 5' to 3'
0.0% c. 5' to 1'
0.0% d. 3' to 1'



Score: 1 / 1

Question 5 (1 point)
A protein which opens the DNA helix at the replication fork is called ______?

Student response: Percent
Value Correct
Response Student
Response Answer Choices
100.0% a. helicase
0.0% b. replicase
0.0% c. forkase
0.0% d. splitase



Score: 1 / 1

Question 6 (1 point)
The last bond made to completely join two fragments on the discontinuous strand is made by a small enzyme called _________.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. helicase
0.0% b. primase
0.0% c. exonuclease
100.0% d. ligase



Score: 1 / 1

Question 7 (1 point)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a conservative manner what type of bands would they have seen in their centrifuge tubes after one cell division?

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. One band at the top
0.0% b. One band at the bottom
100.0% c. Two bands - one at the top and one at the bottom
0.0% d. A band in the middle



Score: 0 / 1

Question 8 (1 point)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a dispersive manner what type of bands would they have seen in their centrifuge tubes after one cell division?

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. One band at the top
0.0% b. One band at the bottom
0.0% c. Two bands - one at the top and one at the bottom
100.0% d. A band in the middle



Score: 1 / 1

Question 9 (1 point)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a dispersive manner what type of bands would they have seen in their centrifuge tubes after two cell divisions?

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. One band at the top
0.0% b. One band at the bottom
0.0% c. Two bands - one at the top and one at the bottom
100.0% d. A band in the middle



Score: 1 / 1

Question 10 (1 point)
Messelson and Stahl took DNA in which both strands were labeled with heavy nitrogen. They then transfered their bacteria to growth media that had only light sources of nitrogen. If DNA was replicated in a semi-conservative manner what type of bands would they have seen in their centrifuge tubes after two cell divisions?

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. One band at the top
0.0% b. One band at the bottom
0.0% c. Two bands - one at the top and one at the bottom
0.0% d. A band in the middle
100.0% e. Two bands - one at the top and one in the middle



Score: 1 / 1

Question 11 (1 point)
Newly replicated DNA on the discontinuous strand is made in short bits (1000 bases). These short pieces are called __________.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. Kawasaki fragments
100.0% b. Okazaki fragments
0.0% c. Bitty bits
0.0% d. DNA bits



Score: 1 / 1

Question 12 (1 point)
Newly replicated DNA on the discontinuous strand is made in short bits (1000 bases). These short pieces will later be modified as ________ removes the primers and fills in the gaps with the exception of the last link.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. RNA Polymerase
0.0% b. primase
100.0% c. exonuclease
0.0% d. helicase



Score: 0 / 1

Question 13 (1 point)
A technique used to increase the amount of DNA in a certain region flanked by artificial primers is called _______?

Student response: Percent
Value Correct
Response Student
Response Answer Choices
100.0% a. PCR
0.0% b. ACR
0.0% c. DNAA
0.0% d. PBS



Score: 1 / 1

Question 14 (1 point)
The enzyme___________lays down a short _______ sequence which is used by DNA Polymerase III to start replicating a DNA template strand.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. helicase ..... DNA
0.0% b. helicase ......RNA
0.0% c. primase ......DNA
100.0% d. primase......RNA



Score: 1 / 1

Question 15 (1 point)
Proteins that protects single stranded DNA during replication are called _____.

Student response: Percent
Value Correct
Response Student
Response Answer Choices
0.0% a. Helicase
0.0% b. replicase
100.0% c. single strand binding proteins
0.0% d. thermophillic proteins



Score: 1 / 1


Total score: 12 / 15 = 80.0%

[Myka]

Thats bad, should be covered by incurance or something.

well my dad handles all that kind of stuff...and he doesnt like anyone going to the doctor except him..because hes afraid it will make the insurance go up...for ex. I needed glasses since I was in about 13yrs...and I just got them when I turned 18 cause he didnt want the insurance to have to pay for an eye doctor trip...its all about $$$ with him...oh well...

[Gra]

Hmm, your wellbeing is worth more than $$$. Hopefully he will understand that one day.

[Myka]

does she look familiar to the UK guys?

[Myka]

maybe gra...

[Gra]

Who is she?