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An experiment conducted aboard Space Lab in 1983 was the

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An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 09 Jun 2013, 10:53
An experiment conducted aboard Space Lab in 1983 was the first attempt to grow protein crystals in the low-gravity environment of space. That experiment is still cited as evidence that growing crystals in microgravity can increase crystal size: the authors reported that they grew lysozyme protein crystals 1,000 times larger than crystals grown in the same device on Earth. Unfortunately, the authors did not point out that their crystals were no larger than the average crystal grown using other, more standard techniques in an Earth laboratory.

No research has yet produced results that could justify the enormous costs of producing crystals on a large scale in space. To get an unbiased view of the usefulness of microgravity crystal growth, crystals grown in space must be compared with the best crystals that have been grown with standard techniques on Earth. Given the great expense of conducting such experiments with proper controls, and the limited promise of experiments performed thus far, it is questionable whether further experiments in this area should even be conducted.
1. According to the passage, which of the following is true about the Space Lab experiment conducted in 1983?
(A) It was the first experiment to take place in the microgravity environment of space.
(B) It was the first experiment in which researchers in space were able to grow lysozyme protein crystals greater in size than those grown on Earth.
(C) Its results have been superseded by subsequent research in the field of microgravity protein crystal growth.
(D) Its results are still considered by some to be evidence for the advantages of microgravity protein crystal growth.
(E) Its results are considered by many to be invalid because nonstandard techniques were employed.
[Reveal] Spoiler:
D


2. It can be inferred from the passage that the author would find the Space Lab experiment more impressive if which of the following were true?
(A) The results of the Space Lab experiment could be replicated in producing other kinds of crystals in addition to lysozyme protein.
(B) The device used in the experiment produced larger crystals on Earth than it did in space.
(C) The size of the crystals produced in the experiment exceeded the size of crystals grown in Earth laboratories using standard techniques.
(D) The cost of producing the crystals in space exceeded that of producing them using standard laboratory techniques.
(E) The standard techniques used in Earth laboratories were modified in the Space Lab experiment due to the effects of microgravity.
[Reveal] Spoiler:
C


3. Which of the following can be inferred from the passage about the device used to grow crystals in the Space Lab experiment?
(A) The device is more expensive to manufacture than are the devices used in standard techniques in an Earth laboratory.
(B) The device has not been used to grow crystals in space since the Space Lab experiment of 1983.
(C) Crystals grown in the device on Earth tend to be much smaller than crystals grown in it in space.
(D) Crystals grown in the device in space have been exceeded in size by crystals grown in subsequent experiments in space using other devices.
(E) The experiments in which the device was used were conducted with proper controls.
[Reveal] Spoiler:
C


4. The passage suggests that the author would most probably agree with which of the following assessments of the results of the Space Lab experiment?
(A) Although the results of the experiment are impressive, the experiment was too limited in scope to allow for definitive conclusions.
(B) The results of the experiment are impressive on the surface but the report is misleading.
(C) The results of the experiment convincingly confirm what researchers have long suspected.
(D) Because of design flaws, the experiment did not yield any results relevant to the issue under investigation.
(E) The results of the experiment are too contradictory to allow for easy interpretation.
[Reveal] Spoiler:
A

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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 08 Aug 2013, 00:42
an easy passage

got one wrong.

reading time : 0205

overall time: 0643

post your doubts if need help.
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 08 Aug 2013, 14:05
The answer to question 4 seems incorrect, it should be "B", no? The fact that the author points out that the report failed to say that the crystals grown in the space lab tended to be the same size as those grown by different means on earth would point to "misleading"...
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 11 Aug 2013, 05:24
Allie8238 wrote:
The answer to question 4 seems incorrect, it should be "B", no? The fact that the author points out that the report failed to say that the crystals grown in the space lab tended to be the same size as those grown by different means on earth would point to "misleading"...


agreed ... the report is misleading ... i go with B
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 11 Aug 2013, 09:46
Reading time:1:30mins.
Total time:aprox 6 mins
DCCA
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 23 Aug 2013, 07:37
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Can some one explain Question 1 and its answer choice?! :x :x
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 24 Aug 2013, 11:30
vabhs192003 wrote:
Completed within 6mins with 1 wrong.

Can some one explain Question 1 and its answer choice?! :x :x


Ans option D reflect the geography or the main idea of the 1st paragraph.
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 24 Aug 2013, 21:29
vabhs192003 wrote:
Completed within 6mins with 1 wrong.

Can some one explain Question 1 and its answer choice?! :x :x


1. According to the passage, which of the following is true about the Space Lab experiment conducted in 1983?
Here the author is asking which of the following statements is true about the space lab experiment conducted in 1983.....

(A) It was the first experiment to take place in the microgravity environment of space.we dont know if this is the first experiment in space environment. Passage mentions first attempt to grow protein crystals in the low-gravity environment of space.
(B) It was the first experiment in which researchers in space were able to grow lysozyme protein crystals greater in size than those grown on Earth. This choice says this was the first time the researchers were able to grow protein in space and have failed other times when the experiment was carried out...
(C) Its results have been superseded by subsequent research in the field of microgravity protein crystal growth.The second paragraph last line says no further experiment in this was carried out.
(D) Its results are still considered by some to be evidence for the advantages of microgravity protein crystal growth.Line 2 in passage "That experiment is still cited as evidence that growing crystals in microgravity" exactly implies this.
(E) Its results are considered by many to be invalid because nonstandard techniques were employed.Not mentioned in passage that results were considered invalid.

Hope this explains.... :)
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 24 Aug 2013, 21:41
mehtakaustubh wrote:
vabhs192003 wrote:
Completed within 6mins with 1 wrong.

Can some one explain Question 1 and its answer choice?! :x :x


1. According to the passage, which of the following is true about the Space Lab experiment conducted in 1983?
Here the author is asking which of the following statements is true about the space lab experiment conducted in 1983.....

(A) It was the first experiment to take place in the microgravity environment of space.we dont know if this is the first experiment in space environment. Passage mentions first attempt to grow protein crystals in the low-gravity environment of space.
(B) It was the first experiment in which researchers in space were able to grow lysozyme protein crystals greater in size than those grown on Earth. This choice says this was the first time the researchers were able to grow protein in space and have failed other times when the experiment was carried out...
(C) Its results have been superseded by subsequent research in the field of microgravity protein crystal growth.The second paragraph last line says no further experiment in this was carried out.
(D) Its results are still considered by some to be evidence for the advantages of microgravity protein crystal growth.Line 2 in passage "That experiment is still cited as evidence that growing crystals in microgravity" exactly implies this.
(E) Its results are considered by many to be invalid because nonstandard techniques were employed.Not mentioned in passage that results were considered invalid.

Hope this explains.... :)



I got thrown off by the word "Advantage" in option D. The passage does not indicate any kinda advantage from the experiment. The passage though indicates that evidences from the experiment are used to decide whether such experiments are practical or not.

But I did get lured to option B and ended up selecting it. I guess option D is best among the worst.
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 24 Aug 2013, 21:47
vabhs192003 wrote:
mehtakaustubh wrote:
vabhs192003 wrote:
Completed within 6mins with 1 wrong.

Can some one explain Question 1 and its answer choice?! :x :x


1. According to the passage, which of the following is true about the Space Lab experiment conducted in 1983?
Here the author is asking which of the following statements is true about the space lab experiment conducted in 1983.....

(A) It was the first experiment to take place in the microgravity environment of space.we dont know if this is the first experiment in space environment. Passage mentions first attempt to grow protein crystals in the low-gravity environment of space.
(B) It was the first experiment in which researchers in space were able to grow lysozyme protein crystals greater in size than those grown on Earth. This choice says this was the first time the researchers were able to grow protein in space and have failed other times when the experiment was carried out...
(C) Its results have been superseded by subsequent research in the field of microgravity protein crystal growth.The second paragraph last line says no further experiment in this was carried out.
(D) Its results are still considered by some to be evidence for the advantages of microgravity protein crystal growth.Line 2 in passage "That experiment is still cited as evidence that growing crystals in microgravity" exactly implies this.
(E) Its results are considered by many to be invalid because nonstandard techniques were employed.Not mentioned in passage that results were considered invalid.

Hope this explains.... :)



I got thrown off by the word "Advantage" in option D. The passage does not indicate any kinda advantage from the experiment. The passage though indicates that evidences from the experiment are used to decide whether such experiments are practical or not.

But I did get lured to option B and ended up selecting it. I guess option D is best among the worst.


The passage Line 2 says "growing crystals in microgravity can increase crystal size......grew lysozyme protein crystals 1,000 times larger than crystals grown in the same device on Earth" which is a advantage of microgravity.
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 25 Aug 2013, 10:22
HI,

Can someone explain Q3 and Q4 analysis.

THanks,
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 26 Aug 2013, 09:09
I am not getting logic to question 4. can anyone explain?
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Re: An experiment conducted aboard Space Lab in 1983 was the [#permalink] New post 27 Aug 2013, 04:32
aryabhatta wrote:
I am not getting logic to question 4. can anyone explain?

Para 1 Line 2 states: growing crystals in microgravity can increase crystal size: the authors reported that they grew lysozyme protein crystals 1,000 times larger than crystals grown in the same device on Earth.
Para1 line 3 states: the authors of exp did not point out that their crystals were no larger than the average crystal grown using other, more standard techniques in an Earth laboratory
Para2 line 2 states:To get an unbiased view of the usefulness of microgravity crystal growth, crystals grown in space must be compared with the best crystals that have been grown with standard techniques on Earth.

now lets analyze the choices considering the above three points:
(A) Although the results of the experiment are impressive, the experiment was too limited in scope to allow for definitive conclusions. This is the correct one...
(B) The results of the experiment are impressive on the surface but the report is misleading.Refering to Para1 line 3 we can say results were drawn without comparing the output of other methods(limited scope) that does not mean the report is misleading...
(C) The results of the experiment convincingly confirm what researchers have long suspected.It is not mentioned in passage what researchers suspected b4 the experiment
(D) Because of design flaws, the experiment did not yield any results relevant to the issue under investigation.No design flaws are discussed in experiment.
(E) The results of the experiment are too contradictory to allow for easy interpretation.Its never mentioned that the results of exp are contradictory
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Re: An experiment conducted aboard Space Lab in 1983 was the   [#permalink] 27 Aug 2013, 04:32
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