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A glycoprotein is a protein to which have been attached a monosacchari

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A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 10 Apr 2020, 02:24
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A glycoprotein is a protein to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide.


(A) to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide

(B) with an attached monosaccharide, disaccharide, oligosaccharide, or else polysaccharide

(C) which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide have been attached to

(D) which is attached by monosaccharides, disaccharides, oligosaccharides, and polysaccharides

(E) to which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide has been attached


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Re: A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 10 Apr 2020, 03:27
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A glycoprotein is a protein to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide.

Meaning analysis: The given statement tells us about a protein's composition. As such it appears to be a statement of fact- which means that there must be some surety as to what is said and there is no doubt about it (at least this what the the one who has made the statement must believe when making the statement)

Therefore, using POE we can eliminate the statements that express doubt as to the statement's validity at the moment

(A) to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide Incorrect as it uses "or"

(B) with an attached monosaccharide, disaccharide, oligosaccharide, or else polysaccharide Incorrect as it uses "or"

(C) which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide have been attached to Incorrect as it uses "or"

(D) which is attached by monosaccharides, disaccharides, oligosaccharides, and polysaccharides Correct. The statement expresses no doubt. Parallelism maintained in the highlighted portion

(E) to which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide has been attached Incorrect as it uses "or"
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Re: A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 10 Apr 2020, 07:35
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A glycoprotein is a protein to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide.

A glycoprotein is what contains one type of saccharide—it can be mono, di, oligo, tetra or Penta, or whatever. But only one thing it can carry but not more. Use of ‘and’ is therefore irrelevant and ‘or’ is required.



(A) To which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide --- When you use ‘or’ the verb should be singular.

(B) With an attached monosaccharide, disaccharide, oligosaccharide, or else polysaccharide—or else polysaccharide is colloquial – wrong

(C) which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide have been attached to --- Can’t make any sentence or meaning out of this verbiage. What is the plural verb ‘have been ‘doing here? Wrong

(D) which is attached by monosaccharide’s, disaccharides, oligosaccharides, and polysaccharides – ‘and’ is irrelevant

(E) to which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide has been attached - The best choice
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Re: A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 10 Apr 2020, 08:49
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A glycoprotein is a protein to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide.


(A) to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide - This choice suffers from subject-verb agreement error. Notice an "or" between the last two parallel entities in the list. Had there been "and", plural verb 'have been attached' would be correct.

(B) with an attached monosaccharide, disaccharide, oligosaccharide, or else polysaccharide - This choice is incorrect because of redundancy issues. 'or else' is uncalled for. Let's keep it for now but check for a better option.

(C) which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide have been attached to - This choice repeats the subject-verb agreement error since it uses 'have' verb for singular entities in the parallel list. This choice is definitely incorrect.

(D) which is attached by monosaccharides, disaccharides, oligosaccharides, and polysaccharides - This choice takes the intended meaning of the sentence for a toss. The four entities are attached to glycoprotein and not the other way around. Thus, this choice is incorrect because of meaning issues.

(E) to which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide has been attached - This corrects the subject-verb error in the original sentence. Also this sentence states the intended meaning clearly and concisely. This is the correct answer!
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Re: A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 13 Apr 2020, 02:28

OFFICIAL EXPLANATION



A glycoprotein is a protein to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide.


(A) to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide

Incorrect.

This answer choice is grammatically incorrect. The plural verb have does not agree with the singular subject a monosaccharide, or with the other saccharides listed as alternative singular subjects for this sentence.

Although the long list of saccharides appears to add up to a plural subject, this is not the case. Note that the subjects are not connected by and. The use of or before the end of the list means that each -saccharide is an alternative for the first singular subject mentioned in the list.

What helps us identify this question as a Subject Verb Agreement question as well as identify the mistake is the following Stop Sign: verb precedes subject

Notice that in the original sentence the Subject Verb Agreement mistake appears within a separate clause beginning with the words to which.



(B) with an attached monosaccharide, disaccharide, oligosaccharide, or else polysaccharide

Incorrect.

While this answer choice corrects the original Subject Verb Agreement mistake by replacing the conjugated verb have been attached with the adjective attached, it is stylistically flawed: the word else is unnecessary and redundant.



(C) which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide have been attached to

Incorrect.

This answer choice repeats the Subject Verb Agreement mistake in the original sentence.

The plural verb have does not agree with the singular subject a monosaccharide (and the alternative singular subjects in the remainder of the list: (a) disaccharide, (a) oligosaccharide, or (a) polysaccharide). The use of or before the end of the list means that each -saccharide is an alternative for the first singular subject mentioned in the list.



(D) which is attached by monosaccharides, disaccharides, oligosaccharides, and polysaccharides

Incorrect.

While this answer choice corrects the Subject Verb Agreement mistake in the original sentence by changing the plural verb have been attached with the singular verb is attached, it changes the meaning of the sentence by adding the preposition by to the verb attached and replacing the connector or at the end of the list with and.

To say that the protein is attached by monosaccharides, etc. implies that the saccharide molecule's job is to attach the protein to something else. The original sentence, however, is saying that the protein has a saccharide molecule attached to it.



(E) to which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide has been attached

This answer choice corrects the Subject Verb Agreement mistake in the original sentence, by changing the plural verb have to the singular verb has.


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Re: A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 25 May 2020, 02:50
daagh wrote:
A glycoprotein is a protein to which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide.

A glycoprotein is what contains one type of saccharide—it can be mono, di, oligo, tetra or Penta, or whatever. But only one thing it can carry but not more. Use of ‘and’ is therefore irrelevant and ‘or’ is required.



(A) To which have been attached a monosaccharide, disaccharide, oligosaccharide, or polysaccharide --- When you use ‘or’ the verb should be singular.

(B) With an attached monosaccharide, disaccharide, oligosaccharide, or else polysaccharide—or else polysaccharide is colloquial – wrong

(C) which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide have been attached to --- Can’t make any sentence or meaning out of this verbiage. What is the plural verb ‘have been ‘doing here? Wrong

(D) which is attached by monosaccharide’s, disaccharides, oligosaccharides, and polysaccharides – ‘and’ is irrelevant

(E) to which a monosaccharide, disaccharide, oligosaccharide, or polysaccharide has been attached - The best choice


I arrived at the same answer but eliminated C and D, because "which" doesn't have a comma. Is that a valid reason to eliminate? daagh
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Re: A glycoprotein is a protein to which have been attached a monosacchari  [#permalink]

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New post 25 May 2020, 04:55
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dexter,
Why not? All routes are fine as long as they each Rome.
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Re: A glycoprotein is a protein to which have been attached a monosacchari   [#permalink] 25 May 2020, 04:55

A glycoprotein is a protein to which have been attached a monosacchari

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