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In laboratory rats, a low dose of aspirin usually suffices t
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  26 Jul 2019, 04:00
sonusaini1 wrote:
In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering
(B) a substance that promotes blood clotting, but not seriously interfering
(C) a substance that promotes blood clotting, but does not seriously interfere
(D) which is a substance to promote blood clotting, but does not seriously interfere
(E) which is a substance that promotes blood clotting, but not a serious interference


Why option D is incorrect? somebody please help.
Thanks

Posted from my mobile device



Now, Original sentence says that thromobroxane is a substance that promotos blood clotting < Basically a general fact about it> but D says that thromobroxane is a substance whose puspose is to promote the blood clotting.

I believe now you can see that D is not what original sentence is trying to communicate.

Hope it helped you.
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shaldor
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  24 Nov 2019, 20:35
Can someone please explain why 'a low does of aspirin' and 'interfere' are correct. Should it not be 'interferes'?
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  25 Nov 2019, 09:20
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shaldor wrote:
Can someone please explain why 'a low does of aspirin' and 'interfere' are correct. Should it not be 'interferes'?

You're correct that the following would be a clear subject-verb error:

    "A low dose of aspirin interfere with the production of prostacyclin."

That's definitely not good, since "dose" is a singular noun, and "interfere" is the plural form of the verb. Trouble is, that's not actually the construction we see in this sentence. There's a helping verb in the sentence ("does") -- and in many cases, a helping verb can change the form of the main verb. What we actually see is the following:

    "A low dose of aspirin does not interfere with the production of prostacyclin."

And this is fine: "does" is the singular form of the helping verb "to do", so we're all good.

I hope this helps a bit!
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In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  18 Jun 2020, 06:50
This question is about parallelism...

the part that says "but does not seriously interfere" should be parallel to "That PROMOTES"

What is not seriously interfering?

"The substance" which refers to thromboxane
That's why D is incorrect and C is correct
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ericzhang0821
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  03 Mar 2021, 05:39
Zarrolou wrote:
fozzzy wrote:
Can someone explain C and D


In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(C) a substance that promotes blood clotting, but does not seriously interfere
(D) which is a substance to promote blood clotting, but does not seriously interfere

"A substance to promote" is not idiomatic first of all; then we can see that C has a parallel structure

substance that promotes (verb), but does not interfere (verb)

On the other hand D has

substance to promote (to + verb), but does not interfere (verb)


I dont think there is any parallel issue here, "but does not seriously interfere" is // to "to block..", not to "a substance".
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  06 Mar 2021, 00:30
To reject D,
one reason mentioned above : a substance to promote is wrong.

Can I also reject D because it is ambiguous in meaning:

a low dose of aspirin usually suffices to block production of thromboxane which is a substance to promote blood clotting, but does not seriously interfere
Ambiguous meaning : but doesn't can be implied in parallel with suffices xx|| doesn't interfere because which xx could be interpreted additional information for thromboxane.
Intended meaning : thromboxane <verb> but doesn't <verb>

This reasoning can help to reject some wrong options in other questions. Please share your opinions .
AndrewN AjiteshArun :please: :please:

Quote:
In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering
(C) a substance that promotes blood clotting, but does not seriously interfere
(D) which is a substance to promote blood clotting, but does not seriously interfere
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  07 Mar 2021, 04:07
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mSKR wrote:
To reject D,
one reason mentioned above : a substance to promote is wrong.

Can I also reject D because it is ambiguous in meaning:

a low dose of aspirin usually suffices to block production of thromboxane which is a substance to promote blood clotting, but does not seriously interfere
Ambiguous meaning : but doesn't can be implied in parallel with suffices xx|| doesn't interfere because which xx could be interpreted additional information for thromboxane.
Intended meaning : thromboxane <verb> but doesn't <verb>

This reasoning can help to reject some wrong options in other questions. Please share your opinions .
AndrewN AjiteshArun :please: :please:

Quote:
In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering
(C) a substance that promotes blood clotting, but does not seriously interfere
(D) which is a substance to promote blood clotting, but does not seriously interfere

Hello, mSKR. I do not think a strong case can be made for ambiguity of meaning in the way you have outlined. The comma before but effectively ropes off the which clause so that the reader understands the main clause is going to continue:

a low dose of aspirin suffices to block production of thromboxane... but does not seriously interfere with the production of prostacyclin

Without the comma in question, the non-essential information about thromboxane would seem to continue instead:

thromboxane, which is a substance to promote blood clotting but does not seriously interfere...

I hope that clarifies your concerns.

- Andrew
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink] New post  07 Mar 2021, 04:35
AndrewN wrote:
mSKR wrote:
To reject D,
one reason mentioned above : a substance to promote is wrong.

Can I also reject D because it is ambiguous in meaning:

a low dose of aspirin usually suffices to block production of thromboxane which is a substance to promote blood clotting, but does not seriously interfere
Ambiguous meaning : but doesn't can be implied in parallel with suffices xx|| doesn't interfere because which xx could be interpreted additional information for thromboxane.
Intended meaning : thromboxane <verb> but doesn't <verb>

This reasoning can help to reject some wrong options in other questions. Please share your opinions .
AndrewN AjiteshArun :please: :please:

Quote:
In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.

(A) which is a substance that promotes blood clotting, but not seriously interfering
(C) a substance that promotes blood clotting, but does not seriously interfere
(D) which is a substance to promote blood clotting, but does not seriously interfere

Hello, mSKR. I do not think a strong case can be made for ambiguity of meaning in the way you have outlined. The comma before but effectively ropes off the which clause so that the reader understands the main clause is going to continue:

a low dose of aspirin suffices to block production of thromboxane... but does not seriously interfere with the production of prostacyclin

Without the comma in question, the non-essential information about thromboxane would seem to continue instead:

thromboxane, which is a substance to promote blood clotting but does not seriously interfere...

I hope that clarifies your concerns.

- Andrew


Thanks for pinpointing the silly mistake .
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Re: In laboratory rats, a low dose of aspirin usually suffices t [#permalink]
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