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globaldesi
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Hey Sajjad1994, how much time should one devote to passages like this, I got all the answers correct and I took 5 mins.
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kntombat
Hey Sajjad1994, how much time should one devote to passages like this, I got all the answers correct and I took 5 mins.

5 minutes is excellent time for this one I think up to 7 minutes are fine for such a passage.

Good Luck
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For QN 2
A. Humans are similar to zebra fish in that human heart cells are generated from pre-existing ones. They may agree as their hearts are capable of regeneration
B. Pre-existing heart cells are responsible for the renewal of heart cells in humans. Its the fact they have discovered so they should agree
C. Stem cells have the potential for self-renewal and can become any of the major types of heart cellsCapability of stem cells for self renewal already stated in the previous passage which is most likely a fact, so they should agree to it
D. Self-renewing stem cells are responsible for the regeneration of heart cells in humans. The para starts with the sentence Recently however, a group at Harvard Medical School published a paper in the journal Nature giving strong evidence against this idea the idea is stem cells written in the previous para. So they disagree that stem cells are the reason.
E. The scale of cell regeneration in humans is much more diminished as compared to that of zebra fish A part of their finding

So Answer D
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For Q1, why is B more appropriate than E ?
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dazzler97
For Q1, why is B more appropriate than E ?

While the passage does touch upon different explanations and perspectives regarding the self-regenerative ability of the human heart, the primary emphasis is on presenting recent research findings and their implications. The passage does not extensively explore various explanations, but rather it primarily focuses on the chronological progression of research in this area.

Option (E) suggests that the passage offers various explanations for the self-regenerative ability of the human heart. However, the passage is more centered around presenting recent research findings, especially from the 2009 study and subsequent work, rather than delving into a variety of explanations. The primary goal is to chronicle and inform the reader about the evolving understanding of the heart's capability for self-renewal based on scientific research.

Therefore, while the passage does touch on some explanations, they are not the central focus, leading to option (B) being a more accurate representation of the passage's primary purpose.
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­1. The primary purpose of the passage is to

A. recognize the similarities in the functioning of the hearts of humans and zebra fish - Limited in scope. 
B. chronicle recent research findings about a capability of a human organ - chronicle can mean detail the development of. Ok. 
C. evaluate the studies conducted about a physiological phenomenon - The passage just reports the findings and doesn't critically evaluate. 
D. identify how to boost the functioning of a human organ for therapeutic gain - Limited in scope.
E. offers various explanations for the self-regenerative ability of the human heart - The author just reported that it happens, but why it happens is not the focus of the passage. 
For example, the author says, "They found that 1% are renewed every year at the age of 25 and that this rate decreases to 0.45% by age 75." But does it try to uncover "why" this happened, or why it is 1% and 1.2%, or why it reduces with age? No. The author is just presenting the facts. No explanation. 

Even when the author talks about the researchers at Harvard, "They showed that, like the zebrafish, we too generate new heart cells from pre-existing ones, and that this phenomenon increases during a heart attack." Does he try to explain why and how the new heart cells do this? And why does it happen during a heart attack? No. He just reports. 
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