True or False
Started by Contach
I would say false but I'm going off the basis that cellular respiration is a net oxidation of glucose and plant respiration is the opposite of that so... yeah I might be totally wrong
Yeah but they use CO2 to make glucose...
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Boooo, doc3232. I think this is a trick. Yea, plants have a net output of O2 and consumption of CO2. But the question is about respiration, which I believe does not include photosynthesis. Respiration, whether plant or animal, is conversion of glucose to CO2. .... IMO. So yea, true.
Ha, wikipedia's first line of "plant respiration" is "Plant respiration is the oxidation of certain substrates by enzymes, leading to a release of carbon dioxide." But yea, that's wikipedia, for what it's worth.
http://en.wikipedia.org/wiki/Plant_respiration
I don't think Contach is that type of guy...I think he is saying that inhaling CO2 (Photosynthesis) is a type of respiration...
Plant respiration is like respiration in animals because plants do not need that starch/glucose to sit around a long time, they have to break it down to get ATP and so forth; that's why they produce their food as autotrophs and they eat that food to get energy as kind of "heterotroph" -- and genuine heterotrophs are "lazy" to make it and just get it from smwhere else already prepared for them .
So, going back to our favorite chemistry, C in glucose has an ox. number of 0 , that of CO2 is +4.........so oxidation of glucose occurred and C atom was oxidized. According to your question that statement is nonsense b/c CO2 is a final product and not a reactant.
Correct me if I'm wrong. GL
So, going back to our favorite chemistry, C in glucose has an ox. number of 0 , that of CO2 is +4.........so oxidation of glucose occurred and C atom was oxidized. According to your question that statement is nonsense b/c CO2 is a final product and not a reactant.
Correct me if I'm wrong. GL
ah i am so confused!!!
I saw it like this..
animals eat glucose. glucose --> CO2 (we oxidize glucose)
plants take in CO2, they make glucose. CO2 --> glucose (therefore they reduce CO2)
Which would make me say it is false. But with my reasoning I got the question wrong.. The answer is true.
but I have no clue what you guys are saying..
Retimo: respiration definitely includes photosynthesis.. I do not know what respiration is if it's not photosynthesis... much like what we call cellular respiration in animal cells is glycolysis, krebs cycle and ETC.
But you say they intake CO2 and output O2... which makes me start to think of this problem from a very different way..
The net reaction of photosynthesis is something like:
CO2 + H2O --> C6H12O6 + O2
but still.. this doesnt help.. CO2 is the most oxidized form of carbon.. u cannot oxidize CO2..
Maybe you can help me explain what you meant. thanks.
I saw it like this..
animals eat glucose. glucose --> CO2 (we oxidize glucose)
plants take in CO2, they make glucose. CO2 --> glucose (therefore they reduce CO2)
Which would make me say it is false. But with my reasoning I got the question wrong.. The answer is true.
but I have no clue what you guys are saying..
Retimo: respiration definitely includes photosynthesis.. I do not know what respiration is if it's not photosynthesis... much like what we call cellular respiration in animal cells is glycolysis, krebs cycle and ETC.
But you say they intake CO2 and output O2... which makes me start to think of this problem from a very different way..
The net reaction of photosynthesis is something like:
CO2 + H2O --> C6H12O6 + O2
but still.. this doesnt help.. CO2 is the most oxidized form of carbon.. u cannot oxidize CO2..
Maybe you can help me explain what you meant. thanks.
Respiration is definitely not photosynthesis (IMO). I think this is the 'trick' of the question. Yes yes, photosynthesis is the production of glucose from CO2. But then what does the plant do with that glucose? If it doesn't store it, the plant breaks down that glucose. This is when respiration begins (IMO). So again, respiration - in animals and plants - starts at glycolysis, then krebs and ETC.
Yes, photosynthesis is the net reduction of CO2. But that is irrelevant to the question IMO.
Yes, CO2 is the most oxidized form of carbon. The question is worded poorly ..... unless I'm reading it completely wrong 😱
I agree, respiration deals with catabolism so the statement is true.
I have never seen respiration deal with anabolism directly.
Don't confuse respiration with photosynthesis. Photosynthesis is how the plant produces the compounds needed for respiration.
I have never seen respiration deal with anabolism directly.
Don't confuse respiration with photosynthesis. Photosynthesis is how the plant produces the compounds needed for respiration.
1st: yes! plants have mitochondria! That is a another great trick question (which I fell for on my cell bio test 2 years ago.. still remember it 😳 ). Plants have mitochondria. They also have NAD/NADH, in addition to NADP/NADPH.
To summarize: Photosynthesis and respiration are two separate processes (IMO).
-Photosynthesis is two steps, light and dark, leading to CO2 -> glucose. Carbon is reduced.
-Respiration in plants is the same as what you're used to in animals. Glycolysis, transition step (pyruvate to acetyl-CoA), Krebs, ETC (with NADH, not NADPH), and ATP pump. Carbon is oxidized as glucose to CO2.
Woah, photorespiration is something totally different. If I remember right, it is an alternate pathway from typical photosynthesis. Look up your old notes on C4 plants. Rubisco, high levels of oxygen, tropical and desert conditions might spark some memories. I don't know DAT too well, but I would hope that C4 pathways and photorespiration are too detailed for this test.
Please please correct me if I'm wrongon this stuff! I might be pulling this all out of my ass. 😀
