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New, strong varieties of antibiotics show the potential to

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New, strong varieties of antibiotics show the potential to [#permalink]

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New post 30 Nov 2013, 08:59
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New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the unintended effects of killing benign bacteria and development of resistant strains of bacteria by earlier high-strength varieties.

1. unintended effects of killing benign bacteria and the development of resistant strains of bacteria by earlier high-strength varieties
2. unintended effects by earlier high-strength varieties of development of resistant strains and killing benign bacteria
3. unintended effects for the development of resistant strains of bacteria and killing benign bacteria of earlier high-strength varieties
4. development of resistant strains of bacteria and killing of benign bacteria that were required by earlier high-strength varieties
5. killing of benign bacteria and development of resistant strains of bacteria, which were unintended effects of earlier high-strength varieties
[Reveal] Spoiler: OA

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 30 Nov 2013, 09:01
Help needed for this question...i marked B as the answer...
Please provide explanations for options..

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 30 Nov 2013, 10:36
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This question is basically trying to measure your capacity to read for meaning in parallel structures. However, I suspect that the correct answer choice (E) does poorly its intent, because GMAT is very strict in terms of "which" usage. "Which" should only refer to previous term.

Read for meaning: The sentence wants to compare new varieties of antibiotics with earlier varieties. Pay attention to where the term "earlier high-strengh varieties" is located in the sentence. Any choice that refers only to one aspect of "earlier high-strengh varieties", you can eliminate it. Go ahead and cross these answers out:

New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the unintended effects of killing benign bacteria and development of resistant strains of bacteria by earlier high-strength varieties.

a. unintended effects of killing benign bacteria and the development of resistant strains of bacteria by earlier high-strength varieties - linked only to the 2nd aspect
b. unintended effects by earlier high-strength varieties of development of resistant strains and killing benign bacteria - linked only to the 1st aspect
c. unintended effects for the development of resistant strains of bacteria and killing benign bacteria of earlier high-strength varieties - linked only to the 2nd aspect
d. development of resistant strains of bacteria and killing of benign bacteria that were required by earlier high-strength varieties - linked only to the 2nd aspect, no comma, no distribution
e. killing of benign bacteria and development of resistant strains of bacteria, which were unintended effects of earlier high-strength varieties - close enough to refer to both terms, but notice that "which" actually refers to a term used in the beginning of the phrase "new, strong varieties of antibiotics"



bsahil wrote:
Help needed for this question...i marked B as the answer...
Please provide explanations for options..

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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bsahil wrote:
New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the unintended effects of killing benign bacteria and development of resistant strains of bacteria by earlier high-strength varieties.

1. unintended effects of killing benign bacteria and the development of resistant strains of bacteria by earlier high-strength varieties
2. unintended effects by earlier high-strength varieties of development of resistant strains and killing benign bacteria
3. unintended effects for the development of resistant strains of bacteria and killing benign bacteria of earlier high-strength varieties
4. development of resistant strains of bacteria and killing of benign bacteria that were required by earlier high-strength varieties
5. killing of benign bacteria and development of resistant strains of bacteria, which were unintended effects of earlier high-strength varieties


It is very important to make sure we understand the meaning of the original sentence. The meaning here is as follows:
New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the unwanted effects that the older strong antibiotics had: the killing of benign bacteria and development of resistant strains of bacteria

Answer B includes the incorrect expression "effect BY," the correct idiom is "effect OF something." It also changes the meaning of the original sentence quite significantly. The expression "by earlier high strength varieties of development." So the sentence does not say that the development is the effect of older antibiotics. It states that it is the "varieties of development" that had some effect. In result the sentence is illogical.
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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 25 Apr 2014, 07:54
Unfortunately I picked option A here. I didn't quite like the which in answer choice E, but not too convinced either with the second part of the sentence for answer choice A

Please advice
Thanks!
Cheers
J :)

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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1. New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the unintended effects of killing benign bacteria and development of resistant strains of bacteria by earlier high-strength varieties.

5. New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the killing of benign bacteria and development of resistant strains of bacteria, which were unintended effects of earlier high-strength varieties

There is a huge meaning shift in 1 AND 5.

1. without the unintended effects of killing benign bacteria
5. without the killing of benign bacteria

1 talks about effects of killing whereas 5 talks about killing of benign bacteria.

I would say its a poor quality question.
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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 09 Aug 2014, 17:48
stuck between A and E.

considering whcih usage ..i marked A which is the closest.

B was temtpting but A clearly had an edge over B in my case.

Pls experts explain ....would E option be not there.....was A the answer then??


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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 02 Oct 2015, 20:54
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 21 Jul 2016, 02:09
My approach is to eliminate those ambiguous options:

New, strong varieties of antibiotics show the potential to kill a harmful bacterium without the unintended effects of killing benign bacteria and development of resistant strains of bacteria by earlier high-strength varieties.

A. unintended effects of killing benign bacteria and the development of resistant strains of bacteria by earlier high-strength varieties
without the unintended effects of... and without the development of ...
or
without the unintended effect of ... and the development of ...
B. unintended effects by earlier high-strength varieties of development of resistant strains and killing benign bacteria
by seems illegal
Since the order of modifiers changed, this option changed the original meaning.
C. unintended effects for the development of resistant strains of bacteria and killing benign bacteria of earlier high-strength varieties
same as 2
D. development of resistant strains of bacteria and killing of benign bacteria that were required by earlier high-strength varieties
it removed unintended effects and added were required, thus changing the orginal meaning
E. killing of benign bacteria and development of resistant strains of bacteria, which were unintended effects of earlier high-strength varieties
clear and unambiguous - killing of... and development of... are two unintended effects.

So E is the best.

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 01 Nov 2016, 07:12
Hi All,

Are they parallel killing of... and development of...

Regards-
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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 01 Nov 2016, 20:23
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AbhijitGoswami wrote:
Hi All,

Are they parallel killing of... and development of...

Regards-
Abhijit


Yes, they are. A complex gerund phrase (the killing of...) can be parallel to an action noun (development).

(A simple gerund, though, cannot be parallel to an action noun. Manhattan SC guide explains the difference between simple gerund and complex gerund elaborately.)

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 01 Nov 2016, 23:22
Thank you Sayan. I need to revise them again :-D

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 22 Nov 2016, 01:18
I got E as it is the only option which makes the meaning of the sentence clear.

But "which" in option E refers to noun phrases and not nouns.

I thought "which" can ONLY refer to nouns.

Can the experts clarify on this?

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 22 Sep 2017, 09:05
the only problem in E is "which", but as Kaplan explains, everything makes sense now.

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 13 Oct 2017, 04:25
mikemcgarry

Could you please let me know why option E is right even though it seems to violate the which rule? i.e: which modifies the preceding word.

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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mohitbahl wrote:
mikemcgarry

Could you please let me know why option E is right even though it seems to violate the which rule? i.e: which modifies the preceding word.

Dear mohitbahl,

I'm happy to respond. :-)

I don't have the highest opinion of this question.

What you are calling the "which rule" is something known broadly as the Modifier Touch Rule. This is an important pattern and it has important and predictable exceptions, such as appear in this SC problem. The post on the Touch has some detail and these have more:
That vs. Which on the GMAT
GMAT Grammar: Vital Noun Modifiers

Let me know if you have any questions on anything in those three blog articles.

Mike :-)
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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 13 Oct 2017, 14:02
B,C,D are not idiom and hence out for sure.
E has better logical meaning than A does.
The key word in E is "were"; the word is plural.

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 15 Oct 2017, 06:26
I chose option A over E because of the 'which rule'.

I see the mistake in A though now. So if you chose A like me, here is why it is wrong:

unintended effects of killing benign bacteria and the development of resistant strains of bacteria by earlier high-strength varieties

Although the sentence is parallel, the effects are by high strength varieties. But in A, it sounds like only the development is by high strength varieties which is wrong.

This error in correct in option E. Which were (plural) clearly refers to the effects(plural). I blindly rejected option E because I saw which and it cannot modify bacteria.

Please feel free to chime in if my above explanation is inaccurate.

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Re: New, strong varieties of antibiotics show the potential to [#permalink]

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New post 16 Oct 2017, 17:31
mikemcgarry wrote:
mohitbahl wrote:
mikemcgarry

Could you please let me know why option E is right even though it seems to violate the which rule? i.e: which modifies the preceding word.

Dear mohitbahl,

I'm happy to respond. :-)

I don't have the highest opinion of this question.

What you are calling the "which rule" is something known broadly as the Modifier Touch Rule. This is an important pattern and it has important and predictable exceptions, such as appear in this SC problem. The post on the Touch has some detail and these have more:
That vs. Which on the GMAT
GMAT Grammar: Vital Noun Modifiers

Let me know if you have any questions on anything in those three blog articles.

Mike :-)



your articles are always amazing
Thank you for such a wonderful help

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Re: New, strong varieties of antibiotics show the potential to   [#permalink] 16 Oct 2017, 17:31
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