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Copycat

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forumlicker007

New Member
Magnet,
allaboutcircuits.com is all about circuits. It has a good database of study materials especially for students. That'll boost up your knowledge. Do not blame it.
 

Sceadwian

Banned
Yeah Ayaska, don't write off all about circuits =) All PHP boards essentially look the same. Electro-Master has done some work here to customize thing but most people just throw up the stock software and run it, cause it's free and it works right 'out of the box'. There forums are new. The site is good because if you look at the top of the page you'll see Vol1-6 buttons which is where the REAL site is, lots of good basics and practical stuff for people that aren't in school and learning electronics on their own.
 

tcmtech

Banned
Most Helpful Member
:rolleyes:
I"m not on it yet so it cant be that great.
:rolleyes:

I guess I will have to check it out! :)
 

HarveyH42

Banned
Why do you think allaboutcircuits sux? I go there after I finish here. They are a little more tolerant of students, homework, and term projects, but still expect to see some indication that the student attempted to solve the problem before asking for help. Many of the regulars here, are also on allaboutcircuits. Should give it another look, and a little more time. Just like here, they get into some pretty heated discussions over the 'alternative-science' free energy schemes people dig up.
 

tcmtech

Banned
Most Helpful Member
This looks like it became your first official "catch hell and piss on you" thread! :p

I guess this means your one of the family now! Congradulations you did it in just 89 posts! :):D:)

And you did it without using politics or religious belief referances! A+ for origionality! :p:D:)
 

Sceadwian

Banned
Actually tcmtech, I'm not defending the forum, just the static content they offer =)
 

Ayaskanta

New Member
Well I didn't like allaboutcircuits because every thread I saw had a very small number of replies.. No one seemed to help the newbies there!
 

Ayaskanta

New Member
Well I'm sorry for blaming that site.. but I'm sooo obsessed with electro-tech that I lost my temper when I saw another one :eek:
 

Ayaskanta

New Member
This looks like it became your first official "catch hell and piss on you" thread! :p

I guess this means your one of the family now! Congradulations you did it in just 89 posts! :):D:)

And you did it without using politics or religious belief referances! A+ for origionality! :p:D:)
Hehe! Thnx... (This was for me right?!)
 

forumlicker007

New Member
One of the recent topic is "AAC is a great site" seems the poster doesn't have a look at electro-tech ;)
They've a special "Homework Help" section also that should be attractive for students.
 

Torben

Well-Known Member
One of the recent topic is "AAC is a great site" seems the poster doesn't have a look at electro-tech ;)
They've a special "Homework Help" section also that should be attractive for students.
There's been talk of adding a section like that here too. The problem is that the majority of annoying one post wonders usually don't pay enough attention to notice.

Might still be worth a shot though. I like the idea.


Torben
 

Torben

Well-Known Member
Well I didn't like allaboutcircuits because every thread I saw had a very small number of replies.. No one seemed to help the newbies there!
Look through the links at the top as Sceadwian said, and check out the free online book on electronics that's there. It's great.

Although I think most people find the forums at AAC first, it's really about the book. Well, it's really about electronics but read that book too. While you're reading it you will have questions, which you can ask about in the forums there. That's not the only way to make a good impression there but it's not a bad one either. ;)

Give the site time. The longer you're on the net, the more sites you'll find which look a lot like this one. It's just a popular forum software look.


Regards,

Torben
 

Mikebits

Well-Known Member
Problem with HW questions, is that they usually consist of something like;

Note: Example below is from a biology forum that I frequent. These are the common hw questions that appear, and I suspect similar questions would appear concerning electronics here. Sorry about length of what follows, but I mean to make a point.
----------------------------------------------------------------------------

I have this take home test and its due 2morrow in my microbiology class

and its my 2nd time taking this class . I was wondering if some one could

go over these questions just to see if I did good!!!



TEST

1. Which of the following compunds has the gratest amount of chemical energy
a.ATP
b.NADH
C.FADH
D. glucose
E.Coenzyme A

2.which organism is not correctly matched to its energy source?
a.photoheterotroph- light
b.photoautotroph-carbon dioxide
c.chemoautotroph- Fe2+
d.chemoheterotroph-glucose
e.chemoautotroph - Nh3

3. Which of the following statements about aerobic respiration is false ?
a. It involves glycolysis only
b. it involves the Krebs cycle
c. It generates NADH and FADH
d. it generates ATP
e. It requires cytochromes

4. Which of the following processes does not genetae ATP?
A. Photophosphorylation
B. Calvin - Benson cycle
C. oxidative phosphorylation
D. substrate - level phosphorylation

5. How man molecules of ATP can be generated from the complete oxidation of glucose to CO2 and H2O in a typical prokaryotic cell?
a. 2
b. 4
c 34
d. 36
e. 38

6. Which of the following is the best definition of respiration?
A. a sequence of carrier molecules with O2 as the final electron acceptor
b . a sequence of carrier molecules with an inorganice molecule as the final electron acceptor
c. a method of generating ATP
d. the complete oxidation of glucose to CO2 and H2O
E. a series of reactions in which pyruvic acid is oxidized to CO2 and H2O

7. If glucose were completely oxidized to carbon dioxide and water, yielding the maximum amount of ATP, approximately what percentage of the ATP would be generated via aerobic respiration?
A. 0
B. 25
C. 50
D .89
E. 100

8. According to the chemiosmotic mechanism, ATP is genreated when
A. electrons are transferred between carrier molecules
B. a high energy phosphate group is transferred from an intermediate metabolite to ADP
C. chlorophyll liberates an electron
D. protons are moved across a membrane
E. cells lyse is a hypotonic environment

9. All of the following are true about substrace- level phosphorylation Except
a. it involves direct transfer of a highe energy phosphate group from a compund to ATP
b. No final electron acceptor is required
C. it occurs in glycolysis
d. oxidation of intermediate metabolic compunds relesase energy that is used to generate ATP.
E. all of the above stastements are true

10. Which of the following is the best defination of fermentation?
A. the reduction of glucose pyruvic acid
b. the oxidation of glucose with organic molecules serving as electron carriers
c. the complete catabolism of glucose to CO2 and H2O
D. the production of energy by substrate- level phosphorylation
e. the production of ethyl alcohol from glucose


use the following answers for questions 18-21. Each answer may be used once , more than once or not al all
A. Escherichia coli growing in glucose broth at 35 C with oxygen (O2)
B. Escherichia coli growing in glucose broth at 35 C without oxygen ( O2)
C. Both A and B
D. neither A nor B

11. Which culture produces the most E. Coli
12.Which culture produces the most lactic acid
13. which culture uses NAD?
14.Which culture produces the most ATP

-------------------------------------------------

15. Which of the following pathways may be used with glycolysis to produce ribose?
a. Entner- Doudoroff pathway
b. pentose- phophate pahtway
c. Krebs-cycle
d. Aan B only
E. A,B,and C

16. Which pathway below is used by some bacteria instead of glycolysis?
A. entmer- doudoroff pathway
b. krebs- cycle
c. pentose- phosphate pathway
d. all of the above
e. none of the above

17.whcich statement regarding metabolism is true?
a. catabolic reactions produce energy.
b. anabolic reactions require energy
c. vitamins are used as coenzymes in enzymatic reactions.
d. all of the above
e. none of the above

18. Feedback inhibition
a. usually affects the last enzyme in a metabolic pathway
b. is a form of competitive inhibition
c. causes the energy of activation to be lowered
d. usually results when the pathway product is in excess
e. none of the above

19.which process below is characterized as anabolic
a. Protein syntheses
B. fermentation
c. lactic acid production
d. anaerobic respiration
e. aerobic respirtaion

20. The addition of which of the following to a culture medium will neutralize bases?
a. buffers
b. sugars.
c. pH
d. heat
e. carbon

21. salts ans sugars work to preserve food by creating
a. a depletion of nutrients
b. a hypotonic environment
c. lower osmotic pressure
d. a hypertonic environment
e. lower pH

22. the term faculative anaerobe refers to an organism that
a. does not use oxy gen but tolerates it
b. is killded by oxugen
c. uses oxygen or grows without oxygen
d. requires less oxygen than is present in air
e. prefers to grow without oxygen

23. the term trace elements refers to
a. the elements represented by the acronym CHONPS
b. vitamins
c. nitrogen, phosphorus and sulfur
d. small minerl requirements
e. toxic substances

24. which type of bacterium would be most likely killed in the presence of oxygen?
a. strict aerobe
b. strict anarobe
c. facultative anaerobe
d. aerotolerant anarobe
e. microaerophille

25. which of the following tupes of media would be used to culture anaerobes?
A. Selective media
b. reducing media
c. enrichment media
d. differential media
e. complex media

26. all of the following are true about agar except
a. it is a source of nutirents in culture media.
b. it is a polysaccharide
c. it liquefies at 100 c
D. it solidifies at approximately 40 C
e. IT cannot be broken down by most bacteria

27. 36 colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard p;ate count. How many cells were in the orginal sample?
A. 4 per ml
b. 9 per ml
c. 18 per ml
d.36 per ml
e. 72 per ml

28. most bacteria gorw best at pH
a. 1
b. 5
c. 7
d.9
e.14

29. which of the following is the best definition of generation time?
A. the length of time it takes for lag phase
b. the length of time it takes for a cell to divide
c. the minimun rate of doubling
d. the duration of log phase
e. the time it take for nuclear division

30. A culture medium on which only Gram-positive organisms grown and a yellow halo surrounds only staphylococcus aureus colonies is called a
a. selective medium
b. differential medium
c. enrichment medium
d. A and B
E. B and C

31.A gene is Best defined as
a. a sequence of DNA
b. 3 nucleotides that code for an amino acid
c. a sequence of nucleotides in DNA that codes for a functional product
d. a sequence of nucleotides in RNA that codes for a functional product
E. a transcribed un it of DNA

32.Which of the following pairs is MISMATCHED?
A. DNA polymerase- makes a molecule of DNA from a DNA template
B.. RNA polymerase- makes a molecule of RNA from an RNA template
C. DNA- ligase - joins segments of DNA
D.transpose - insertion of DNA segments into DNA
e. Spliceosome- removal of inrons

33. Genetoc change in bacteria can be brought about by
a. Mutation
B. conjugation
C. transductions
D. transformation
e. all of the above

34. which o the following enzymes is not found in any organism?
A. DNA polymerase
B. RNA polymerase
c. reverse transcriptase
d. ribozymes
e. DNA ligase

35. During replication and transcription
a. DNA is " read" in a 3 to 5 direction
b/ DNA is manufaactured in a 5 to 3 direction
c. the bases added in both processes are deoxyribonucleotides
d. a and b only
e. A, B and C

36. True or False ' The bacterial chromosome is a doube stranded linear molecule"
T or F

37.Before replication takes place in bacteria, the chromosomes is normally
a. a large relaxed covalently closed circle
b. linear
c. a highly compact and supercoilded double stranded circle
d. found inside the nucleus of the cell
e. covered with ribosomes

38. which of the following staements is FALSE
a. DNA polymerase jois nucleotides in the 3 ---->5 direction only
b. the leading strand of DNA is made continous;y
c. the lagging strand of DNA is started by and RNA primer
d. DNA replication proceeds in one direction around the bacterial chromosome
e. multiple replication forks are possible on a bacterial chromose

39.. The transfer of DNA from a donor to a recipient cell by a bacteriophage is
a. conjugartion
b. transduction
c. transformation
d. genetic engineering
e. none of the above

40. which of the follwoing is NOT a product of transcription?
a. a new strand of DNA
b. rRNA
c.tRNA
d.mRNA
e. none of the above

41. an enzyme produced in response to the presence of a substrate is called
a. an inducible enzyme
b. a repressible enzyme
c. a restriction enzyme
d. an operator
e. a promoter

42. The DNA probe, GGCTTA, will hybridize with DNA containing
A. CCGUUA
B.CCGAAT
C.GGCTTA
D.GGUUA
E.GGCAAU

43. Which of the following is the reaction catalyzed by DNA - dependent RNA polymerase?
A. DNA----> mRNA
B. mRNA---> cDNA
C.mRNA---> protein
D. DNA ---> DNA
e. none of the above

44. Which of the following enzymes is used in replication of the lagging DNA strand?
A. RNA polymerase
B. DNA polymerase
C. DNA ligase
D. A and B only
E. A,B and C

45. In transcription
a. DNA is change to RNA
b. DNA is copied to RNA
c. DNA is replicated
d. RNA is copied to DNA
e. proteins are made

46. the value of cDNA in genetic engineering is that
a. it lacks exons
b. it lacks introns
c. it is really RNA
d. it allows prokaryotic genes to be inserted into eukaryotic dna
e. none of the above

USE THE FOLLOWING INFO TO ANSWER QUESTIONS 47-49
CONDON ON mRNA and the corresponding amino acid

47. if the sequence of amino acids cpded for by a strand of DNA is valine- histidine proline arginine what is the order of bases in the strand of DNA?
A CAGGTAGACTAC
B. GUUCAUCCGCGU
C.CAAGTAGGCGCA
D.GACGTAACATTT
E.CAGGGCGGCGCA

The antisense ( complimentary) strand coding for the polypeptide in question 47 is
A. GTCCATCTGATG
B.GTTCATCCGCGT
C.GUUCAUCCGCGT
D.GTCCCGCCGCGT
E.GTCCATCTGATG

What os the sequence of mino acids coded for by the following sequence of bases in a strand of DNA? GACTACACATTT
A. Leucine methionine cysteine lysine
B. prline arginine histidine proline
c. leucine lysine arginine valine
d. transcription would stop at the first codon
e. cannont be determined from the data given

What is the anticodon for methionine?
a. TAC
B. GTA
C. AUG
D. CGA
E. UAC

which of the following is not used in make cDNA?
A. REVERSE TRANCRIPTION
B. RNA processing to remove introns
c. transcription
d, translation
e. i do not know, so I am choosing this wrong answer





IM BEGGING , ASKING IF SOME ONE COULD GO OVER SO I CAN MAKE MY CORRECTIONS
 
Last edited:

Torben

Well-Known Member
Problem with HW questions, is that they usually consist of something like;

Note: Example below is from a biology forum that I frequent. These are the common hw questions that appear, and I suspect similar questions would appear concerning electronics here. Sorry about length of what follows, but I mean to make a point.
----------------------------------------------------------------------------

I have this take home test and its due 2morrow in my microbiology class

and its my 2nd time taking this class . I was wondering if some one could

go over these questions just to see if I did good!!!



TEST

<snipped for brevity>

IM BEGGING , ASKING IF SOME ONE COULD GO OVER SO I CAN MAKE MY CORRECTIONS
hehe. That kind of thing would be fine with me except for that final plea. Although I have to say, that one could just be looking for someone to say "No, look harder at questions x, y, and z". The bit in caps at the end makes me wonder though.

But I know what you mean. :)


Torben
 

Mikebits

Well-Known Member
The poster could have at least given his answers, which he did not. This is blatant cheating in my book, and as a student myself, I resent these people. I work hard for my grade. Can I say damit?...:)
 
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