Item SB041001: The solid wood of a tree comes mostly from carbon dioxide gas molecules from the air.
A student says that a tree gets most of its mass through a series of chemical reactions that starts with a gas in the air and then makes the solid wood of the tree. Do you agree or disagree with him, and why?
I agree that the solid wood of a tree comes mostly from a gas in the air
- because the molecules that make up the solid wood of trees are made from glucose, and the carbon atoms in glucose come from carbon dioxide molecules in the air.
- because the molecules that make up the solid wood of trees are made from glucose, and the oxygen atoms in glucose come from oxygen molecules in the air.
- because trees grow by trapping gas inside the cells that make up the solid wood of the tree, which causes the wood to expand.
I disagree that the solid wood of a tree comes mostly from a gas in the air
- because a gas could never be massive enough to account for the mass of the solid wood of trees.
- because trees make their own food, which means that new atoms are made inside the trees so that they do not need to take in anything from the air.
- because non-living substances, such as the gasses that make up the air, cannot be transformed into parts of living things.
- Distribution of Responses
![Chart showing distrubtion of responses for Item ME041001](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=339933|76A4FB|76A4FB|76A4FB|76A4FB|76A4FB&chds=0,100&chd=t:23,13,6,14,30,13&chxl=0:|A|B|C|D|E|F&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=ME041001-dist.png)
- Points Earned
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 82 | 352 | 23% |
Grades | |||
6–8 | 82 | 352 | 23% |
9–12 | N/A | N/A | N/A |
Gender | |||
Male | 46 | 190 | 24% |
Female | 36 | 162 | 22% |
Primary Language | |||
English | 77 | 325 | 24% |
Other | 5 | 27 | 19% |
- Distribution of Responses
![Chart showing distrubtion of responses for Item ME041001](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=339933|76A4FB|76A4FB|76A4FB|76A4FB|76A4FB&chds=0,100&chd=t:50,12,4,10,15,9&chxl=0:|A|B|C|D|E|F&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=ME041001-dist.png)
- Points Earned
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 170 | 341 | 50% |
Grades | |||
6–8 | 170 | 341 | 50% |
9–12 | N/A | N/A | N/A |
Gender | |||
Male | 94 | 180 | 52% |
Female | 76 | 161 | 47% |
Primary Language | |||
English | 161 | 315 | 51% |
Other | 9 | 26 | 35% |