#27 - Global Reference, Must Be True

[lathlee]

Hi. I am totally lost in this Question, I cannot find the relevant information to answer including the back page explanation where it says 36-38 has the info to select the answer. I don't see it.

[Adam Tyson]

Line 15 should help - that's where we learn that maize and a few other crops are much more bountiful than others. Later, we learn that rubisco, an enzyme, is important, but it oxygen does something to interfere with it. It's the plants that have that separation thanks to a central area where the rubisco is sheltered that do so well, and maize is apparently among those.

The info really comes from many places throughout the passage, but when you put it all together you learn that maize is special, unlike most other plants, because of the way it safeguards rubisco. That's answer A!

[lathlee]

Thank you so much for answering so late so i might get an important revelation for an important test

[chian9010]

Can anyone please explain why answer choice C is wrong?
The paragraph (line 27) mentions that rubisco assists in the sugar forming chemical reaction.
Therefore, I am not sure why it is wrong.

[Brook Miscoski]

Chian,

The reason that (C) is wrong is that the passage states that rubisco is sequestered in the bundle sheath cells where carbon dioxide gas cannot enter. Therefore, the passage illustrates that rubisco is not necessary to convert carbon dioxide into a nongas molecule, since the plants being discussed do not use it that way.

[miriamson07]

Hi Powerscore,

If "some" things (such as plants) are a certain way (such as can do C4 photosynthesis), then is it always the case that those things (plants) that aren't that way (can't do C4 photosynthesis) are "many"? Or do we only know that to be the case for this question because of other information in the passage, such as line 15, and the fact that this is an inference question?

[Luke Haqq]

Hi miriamson07!

To your first question, I think it's worth emphasizing that relative terms that don't convey a precise or even rough quantity. For example, "some" doesn't mean more than half, but it could involve that. "Many" also doesn't necessarily mean more than half but again it could.

To your second question, you raise a great point by referencing the material around line 15. Of course, it makes the most sense when taken in combination with the second and third paragraphs, which discuss rubisco. But the material around line 15 tells you that the mechanism described in the third paragraph is why "maize and a few similar crops [are] so much more bountiful than others."