am i correct?/ bilogy? grade me pleaseeeeeeeeeeeeee?

Question

Where does the O2 released during photosynthesis come from?
a. CO2
b. H2O
c. ATP
d. C6H12O6
e. RuBP
i think answer is D
The light-dependent reactions of photosynthesis result in which of the following?
a. Oxidation of CO2
b. Reduction of H2O
c. Phosphorylation of ADP
d. Oxidation of chlorophyll
e. Oxidation of glucose
I THINK THE ANSWER IS "D"
Which of the following is a source of electrons used for reduction reactions by green plants?
a. Glucose
b. CO2
c. RuBP
d. O2
e. H2O
ANSWER IS " E"
The energy of the movement of electrons down their concentration gradient via electron transport within chloroplasts and mitochondria is used to generate molecules of:
a. H2O
b. CO2
c. C-H-O
d. ATP
e. O2
ANSWER IS "D"
The NADPH required for carbon dioxide fixation is formed
a. by the reduction of oxygen.
b. by the hydrolysis of ATP.
c. during the light reactions.
d. only in C4 plants.
e. in the mitochondria.
ANSWER IS A

The primary function of the light reactions of photosynthesis is
a. to produce energy-rich glucose from carbon dioxide and water.
b. to produce energy-rich ATP and NADPH.
c. to produce NADPH used in respiration.
d. to convert light energy to the chemical energy of lipids.
e. to use the ATP to make glucose.
ANSWER IS A
The term "cycle" is used to describe the light-independent reactions (Calvin-Bensen cycle) because...
a. the same reactions occur every time.
b. CO2 is fixed in every turn of the cycle.
c. the process begins and ends with RuBP.
d. glucose is synthesized during the process.
e. the process depends on products from the light-dependent reactions.
ANSWER IS E
All of the following are part of the Calvin-Benson cycle except:
a. Carbon Fixation
b. Synthesis of G3P
c. Generation of ATP
d. Regeneration of RuBP
e. All of the above are part of the cycle.
ANSWER IS C

Photorespiration is bad for a plant because...
a. O2 is required.
b. CO2 is synthesized.
c. RuBP is degraded.
d. glucose is synthesized.
e. no ATP is produced.
ANSWER IS B

C, MON TELL ME WHAT QUESTIONS ARE WRONG? PLEASEEEEEEE

Answer 1

1 B Plant keeps the H+ and electrons from water molecules and throws away the oxygen.
2 C ADP gets another phosphate added on in that spinner enzyme as H+ stream out of the thylakoids. The resulting ATP molecules are used in the Calvin cycle along with NADPH.
3 E The electrons are supplied from breaking water molecules -- passed along to chlorophyll in Photosystem II.
4 D Energy from electron transport is used to make ATP.
5 C NADPH is made during the light reactions and passed to the Calvin cycle.
6 B The whole idea of the light dependent reactions is to get the energy and hydrogens ready for the Calvin cycle. They do this by making ATP and NADPH.
7 C The Calvin cycle is a cycle because it ends up with the molecule that it needs to start all over again - RuBP
8 C ATP is broken to release energy in the Calvin cycle; ATP is not made in the Calvin cycle.
9 C RuBP has oxygen added instead of CO2, resulting in CO2 being released instead of progressing through the cycle and ultimately making glucose.

Answer 2

Where does the O2 released during photosynthesis come from?
a. CO2 -carbon diox
b. H2O -water
c. ATP - chemical energy that is stored as ATP.
d. C6H12O6 - sugar
e. RuBP
i think answer is D
i believe oxygen doesnt come from sugar right?sugar was the result as the oxygen was too A
The primary function of the light reactions of photosynthesis is
a. to produce energy-rich glucose from carbon dioxide and water.
b. to produce energy-rich ATP and NADPH.
c. to produce NADPH used in respiration.
d. to convert light energy to the chemical energy of lipids.
e. to use the ATP to make glucose.
i believe B
" when light energy is absorbed by chlorophyll and converted into chemical energy that is stored as ATP.
It also generates NADPH, a substance that, like ATP"
idk the rest try reading something on it in wikipedia.org

Answer 3

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Answer 4

Because of all the different answers, I'm just seconding ecolink.

Make sure you have a good biochemistry pathway diagram to refer to and go through carefully, step-by-step. That's what these questions are testing for. Be clear on what the definitions of Calvin Cycle, reduction, oxidation, and light reactions are.

Answer 5

photosynthesis uses CO2 from the air

the second one I believe your right

Answer 6

impressive looks good

Answer 7

looks good to me

Answer 8

you'll pass...i think you got 2 questions wrong...