High School Biological Photosynthesis, Calculation in Brackets 2 Question for Detailed Explanation!!

2) The answer is: 200; 160。

When the light intensity is 15 klux, the amount of carbon dioxide absorbed by the plant from the outside is 150 milliliter hours, and the respiration intensity of the plant is 50 milliliter hours, so the carbon dioxide assimilated by the plant is 200 milliliters per hour, and the oxygen absorbed by the plant during photosynthesis is equal to the oxygen released, so the oxygen produced by the plant per hour is 200 milliliters;

Through the first space, it can be seen that plants produce oxygen for a total of 200 milliliters of hours, so the plant fixes carbon dioxide should be 200 milliliters, and it can also be seen from the figure that the respiration intensity of the plant is to consume 50 milliliters of oxygen per hour, because the respiration entropy of the plant is, so the consumption of this 50 milliliters of oxygen produces a total of 40 milliliters of carbon dioxide, and at this time the plant fixes a total of 200 milliliters of carbon dioxide, so the plant also needs to absorb carbon dioxide from the outside for 160 milliliters of an hour.

1. According to the figure, when the light is 15, the net value of CO2 released per hour is 150ml, but because it absorbs 50ml when it breathes. So the total amount released is 200

2. The respiratory entropy is, and the absorbed O2 is 50, so the CO2 produced during respiration is 40ml, and since a total of 200ml is needed, 160ml is absorbed from the outside world.

Photosynthesis of 60mg of glucose per hour is the total photosynthesis yield, and the amur is not the net yield.

Net yield = total amount of photosynthesis - respiration and paramedial consumption), according to which the total hourly consumption of CO2 in photosynthesis can be obtained = 60 180 * 6 * 44 mg = 88 mg, so respiration under light conditions produces CO2 38 mg per hour.

Accumulation of glucose in one day and night 60*10-25 (44*6)*180*14=

d option.

The amount of CO2 absorbed at 10 is: -Dark consumption) 12*The same goes for option C.

Plant growth is mainly dependent on photosynthesis.

A and B can also be selected

d First of all, it should be clarified: for 24 hours a day and night, when the light is constantly shining day and night, photosynthesis is carried out for 24 hours, and respiration is also carried out for 24 hours; When light is alternated, photosynthesis is carried out for 12 hours and respiration is carried out for 24 hours.

Net photosynthesis = total photosynthesis - respiration.

The second set of data measured in the experiment (CO2 absorption under light) refers to net photosynthesis.

For two items A B, just pay attention to the second set of data, 35 hours of absorption of CO2>0, plants can grow, remember as long as it is greater than 0, it can grow; The fastest growing temperature corresponds to 25.

For both CDs, attention should be paid to the difference between the absorption of CO2 in light and the release of CO2 in the dark, which are 1 respectively

So the answer should be d

Personally, I think I choose CThree-carbon compounds and five-carbon compounds are a dynamic equilibrium system, the total amount is limited and relatively stable, and it will not increase more or more. After CO2 participates in photosynthesis, it will synthesize sugars, and after metabolism, it will form lipids and other organic substances, so there will be more and more types.

In the same way, the chromogenic substances on the thyroids are also generated and transferred and maintain dynamic equilibrium, so it makes no sense to say that they are mainly distributed on the thylakoids, because after all, it is necessary to synthesize sugars and metastasize metabolism.

D, C3 is produced by dark reaction, not under light conditions, C3 reacts with CO2 to form C5Photoreaction CO2 does not participate in the reaction. So choose D

Choose C, Finnery's explanation is the correct solution.

The total reaction formula of the aerobic respiration process.

C6H12O6+6H2O+6O2 6CO2+12H2O Photosynthesis Reaction Formula.

1) CO2+H2O(Light) (CH2O)+O2 Condition: Light.

in chloroplasts (the total reaction used in the calculation).

co2+12h2o

c6h12o6+6

h2o+6o2↑

The condition is light, within chloroplasts.

The answer is A

First of all, keep in mind that the table sight sum rate (i.e., net photosynthesis) is usually expressed as: CO2 uptake, O2 release, organic matter accumulation;

The true photosynthetic rate (i.e., the actual photosynthesis) is usually expressed as: the fixed amount of CO2, the amount of O2 generated, and the amount of organic matter produced.

A. The dotted line represents the amount of CO2 absorption, so it is the net photosynthetic curve, so at this time, the net photosynthetic rate = respiration rate, and the real photosynthetic rate = net photosynthetic rate + respiration rate, so A is not equal.

B, Figure B A and B both represent photosynthetic = respiration, take A as an example: the CO2 concentration increases before point A, indicating photosynthetic respiration before point A, and the CO2 concentration decreases after point A, indicating photosynthetic respiration after point A, so point A (i.e., the turning point) should be equal.

c. When the illumination intensity of Figure C is 0, the synthesis rate is 0 (origin) instead of a negative value, so the photosynthetic rate of this figure is true photosynthesis, otherwise it should be a negative value (because there is respiration).

d. The ordinate of Tuding represents net photosynthesis, which is the same as C, or you can see "absorbing CO2".

The answer is: c.

The decrease in time synthesis at point C is due to the decrease in carbon dioxide entering the plant body due to the increase in temperature and the closure of the stomata of the leaves, so photosynthesis is weakened.

Then, compared with point B, due to the decrease of carbon dioxide, the pathway speed from C5+CO2 to C3 decreases, while the speed of the pathway from C3 to C5 does not change, so it will cause C3 to decrease and C5 to increase;

In addition, the ability of the dark reaction of photosynthesis to assimilate carbon dioxide decreases, which in turn causes the accumulation of photoreaction products atp and [h], so atp and [h] rise.

So the overall is: C3 goes down, C5 goes up, ATP goes up, [H] goes up.

The first one is definitely wrong. The sentence "If the photosynthesis at point C and point B is lower than that of point B, then [H] and ATP will decrease" has no logical relationship at all, not because the photosynthesis at point C is weak, and [H] and ATP are less.

Because the reason for the decrease of photosynthesis at point C is that the dark reaction is limited, not the light reaction, the light reaction is still very strong at this time, and it is precisely because the dark reaction is weak, so the products of the light reaction [H] and ATP are consumed less in the dark reaction, and there is more left.

The second answer is wrong. "Point C is compared with point B, point B is noon, the light is too strong, the stomata are closed" This sentence is wrong, it needs to be made clear: the stomata are closed not because of strong light, but because of high temperature, plants reduce transpiration by closing the stomata in order to retain water, which inevitably leads to a reduction in the absorption of CO2.

Thus affecting the dark reaction of photosynthesis. In addition, the highest temperature of the day is around 2 p.m., so the stomata close the most and absorb the least carbon dioxide at this time.

At this time, the independent variable is time, and it should be considered that the direct cause of the decrease in plant photosynthetic rate is the closure of stomata and the decrease of CO2 uptake, so C3 decreases and C5 increases. Due to the decrease in the rate of the dark reaction, the [H] and ATP that need to be consumed decreases, resulting in an increase in the [H] and ATP content.

When photosynthesis is used as a, there is no oxygen production.

The amount of autogenesis, so chloroplasts do not produce oxygen, that is, there is no photosynthesis, from which the amount of carbon dioxide produced by mesophyll cell respiration can also be known.

bChronosynthesis and respiration are not equal. Because a part of the carbon dioxide supplied to photosynthesis is not released, respiration is still greater than photosynthesis at this time.

c, there is no carbon dioxide released and the amount of oxygen produced is equal to the amount of carbon dioxide produced by respiration, that is, photosynthesis is equal to respiration.

dSynthesis is greater than respiration, and the accumulation of organic matter begins.

The second question doesn't quite understand what you mean. Only a small number of plants such as cacti will have a light reaction during the day and a dark reaction at night, and most plants will have two reactions at the same time, and only respiration will be carried out at night.

The first mistake lies in the second point of BAI, aerobic exhalation needs to consume CO2, so the CO2 release shown in the figure is actually the total DAO release minus the absorption and adduction, so.

When at point b, the exhalation effect is greater than that of photosynthesis.

The second is correct, these two quantities represent the degree of photosynthesis and the degree of respiration, according to the formula of these two effects, it can be calculated that the volume of oxygen released by completing the same unit of photosynthesis and CO2 released by respiration are the same. But when we do the laboratory measured the total amount, the amount of oxygen released is nothing to say, the measured value is the real value released, but for CO2, the measured value is not necessarily the total value produced by respiration, when only respiration is, just like point A, there is no photosynthesis, the measured value is the total value produced, but when the two effects are in the same place, photosynthesis will absorb part of the CO2 released by respiration, The CO2 released by respiratory lease is only detected if it is absorbed by photosynthesis and the remainder is detected.

(1) Outer chloroplast membrane, inner chloroplast membrane, thylakoids, chloroplast matrix, (2) Mesophyll, photosynthesis.

3) thylakoid membrane chloroplast matrix.

4) chlorophyll a chlorophyll b lutein carotene on the thylakooid membrane in chloroplasts.

5) Chloroplast matrix DNA

6) Photolysis of water.

7) Dark reaction stage Light reaction stage.

8) [H] ATP thylakoid membranes.

9) Chloroplast matrix.

10）[h] atp

11) 6CO2+12H2O C6H12O6+6O2+6H2O (the arrow is enzyme and light above, and chloroplasts are below, which can't be hit).

12) Light energy is converted to energy in (CH2O) through a dark reaction of the active chemical energy in ATP.

13) Water carbon dioxide.

14) Carbon dioxide concentration, temperature.

15) Down, Up, Up, Down.