There is a calculation about biological photosynthesis, all living things can photosynthesize?

37 In the second space, you calculate the amount of oxygen, and the question asks about glucose, so you need to use the relative molecular mass to convert.

For every 6 molo2 consumed, 1 mol of glucose is produced, where 192 is the relative molecular mass of O2 multiplied by 6 mol, and 180 is the relative molecular mass of glucose.

The second space of question 38 is calculated by oxygen, in the first 12 hours, the total photosynthesis-respiration = per hour, multiplied by 12 hours=;

After 8 hours, only respiration, respiration, then 20 hours of net oxygen production is the same as the previous question, convert, use.

Done, I hope it helps.

12H2O + 6CO2+ sunlight chemically reacts with chlorophyll); C6H12O6 (glucose) +6O2+ 6H2O

The molecular weight of glucose is 180, and the molecular weight of oxygen is 32

1,( The total duration is multiplied by the respiration rate to obtain the total oxygen consumption, and the glucose is obtained by substituting it into the formula.

2 (12*( 12h photosynthesis minus respiration, 8h pure respiration, pay attention to temperature changes.

Subtract what this question asks, and what you mainly look at.

Like net photosynthesis, the table sightseeing cooperation, photosynthesis breathes less O2

The total photosynthesis is the same, that is, the original total number is required, generated, plus the respiratory consumption.

No, only green plants and cyanobacteria can photosynthesize, because green plants have chloroplasts and can photosynthesize, while cyanobacteria do not have chloroplasts but have photosynthetic pigments and enzymes that can also photosynthesize.

No, only a subset of organisms are capable of photosynthesis.

Photosynthesis is the process by which green plants, including algae, absorb light energy and synthesize carbon dioxide and water into energetic organic matter, while releasing oxygen. Well in general,Only green plants and algae can photosynthesize

But it doesn't have to be, there are some plants that can't photosynthesize. For example, a partParasitic plantsPlants such as Cuscuta and Lydant do not have enough chlorophyll because they have no leaves or their leaves are degradedInability to perform normal photosynthesis, only the ducts and sieve tubes can be connected to the host plant and absorb nutrients and water from the host plant.

Animals and microorganisms that do not contain photosynthetic pigments are even less able to photosynthesize.

Photosynthesis process: carbon dioxide + water.

through light, chloroplasts).

Organic matter (starch) oxygen.

Answer:;;

2K LX illumination, the external CO2 is UMOL H, the actual CO2 consumption: according to the photosynthesis equation, 6CO2:1 glucose, the actual photosynthetic amount is expressed by glucose, and it is 27UMOL H, then the actual CO2 consumption is.

The amount of CO2 consumed by actual photosynthesis = the amount of external CO2 Conversion rate + the amount of CO2 released from respiration (known as, =, then a=;

When the external CO2 concentration is 6 umol h, the amount of CO2 consumed by actual photosynthesis = the amount of external CO2 Conversion rate + the amount of CO2 released by respiration (known as.

Then the actual amount of C6H12O6 synthesized is (6* (6CO2:1 glucose)

Total CO2 consumption = respiration + external CO2 multiplied by conversion rate, so the total CO2 consumption and CO2 concentration have a linear relationship with y=n+kc (y is total, n is the CO2 released by respiration, k is constant, and c is the CO2 concentration in the air).

Bring in the numbers. k = 17 120

n = so, when the amount of photosynthesis is absorbed, the plant absorbs kc ·mol h = 17 120* from the outside world

The conversion rate to external CO2 is 17 120

When outside CO2=, y=

According to the question, the amount of CO2 absorbed in a day is calculated.

Absorption: Daytime average temperature 30 degrees Celsius for 15 hours, O2: 15h 640mg 10h = 960mg

The mol amount of O2 n(O2)=m m=

The mol ratio of 02 to CO2 is 1:1, so n(CO2) = amount released:

The average temperature during the day is 30 degrees Celsius for 15 hours, 15h 220mg 5h = 660mg at night at 15 degrees Celsius (24-15 =) for 9 hours, 9h 110mg 5h = 198mg

n（co2）=m/m=

Net absorption3, glucose is calculated based on the calculated amount of net absorption of CO2.

According to the reaction formula of the first part, 6CO2: C6H12O6=6:1=N(CO2): N(C6H12O6)+6:1

So n(c6h12o6)=

If you replace it with mass m=

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

(180x1-4x40)x180 (44x6)=180x1 [accumulation].

4x40 [Respiration Exertion].

In the application of chemical equations will do

If you don't understand very well, you can ask again.

First of all, it is necessary to understand the following concepts1, the reduction of CO2 content in the container by 180mg per hour refers to net photosynthesis (i.e. total photosynthetic absorption of CO2 minus)2, and the CO2 in the container increases by 40mg per hour (i.e., respiratory CO2)3, and the question requires glucose not CO2

Now for the answer:

According to the photosynthesis reaction equation, 6molCO2 generates 1mol of glucose (i.e., 180mg of glucose per 6*44mg=264mg CO2).

1 hour under light Glucose production 180 264 * 180 = 4 hours in the dark Glucose consumption 40 * 4 264 * 180 = increase glucose in summary.

Got it? ~~

One hour of light, CO2 decreases by 180mg, and then placed in the dark for 4 hours, increasing CO2 4x40=160mg, so a total of 20mg of CO2 is absorbed by photosynthesis, 6mol CO2 is converted to 1mol of glucose, 20 44 mol This is the mass of CO2, divided by six is the mass of glucose, and then multiplied by the relative atomic mass of 180, that is, 20x180 (44x6) =

According to the title, respiration consumes glucose, and photosynthesis produces glucose. At the beginning, the carbon dioxide is reduced by 180mg in one hour of light, according to which it can be seen that the glucose synthesized by photosynthesis in this hour is converted into carbon dioxide in addition to the remaining consumption of respiration, and the carbon dioxide produced is 40mg when only respiration is carried out in the dark, so the glucose that needs to be consumed is, so the glucose synthesized in one hour of photosynthesis is 150mg, and now the glucose synthesized by photosynthesis in one hour is 150mg, But at the same time, this hour also has to be respirated, plus the next four hours of darkness, a total of 5 hours of breathing, and photosynthesis is only 1 hour, so it is used.

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=

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.