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oksian1 [2.3K]
3 years ago
7

If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the f

ollowing molecules produced by the algae contain 18O, EXCEPT _____. A. RuBP regenerated B. sugars produced by Calvin Cycle C. PGA produced in Calvin cycle D. O2 released by them
Biology
1 answer:
motikmotik3 years ago
8 0

Answer:

The correct answer will be option-D

Explanation:

The process of photosynthesis release oxygen from the plant which is used by the organism on earth during cellular respiration.

The oxygen released by the plants is formed through the splitting of water molecules as a result of the transfer of electrons through the electron transport chain in the thylakoid membrane during the light-dependent reaction.

Since the released oxygen is the result of the light-dependent reaction and not the light-independent reaction or Calvin cycle where heavy oxygen isotope is utilized in the cycle.

Thus, option-D is the correct answer.

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What is the correct sequence of these genes on the X chromosome?
almond37 [142]

Answer:

C

Explanation:

The correct sequence of these Genes on the X chromosome is sc v s (v in the middle)

7 0
3 years ago
What organisms are the MVP's (most valuable players) of life. And if we disappeared off of the Earth, would it have a detrimenta
Kisachek [45]
I would say photosynthetic bacteria are the most important, because if they disappeared most of the oxygen in the atmosphere wouldnt be here and complex life like humans wouldnt exist
8 0
4 years ago
During endocytosis the cell takes in liquids<br><br> true or false?
Morgarella [4.7K]
I believe false but i’m not sure :)
3 0
4 years ago
A method used by horticulturalists when they rotate the use of fields—planting crops on a particular piece of land for a period
svetoff [14.1K]

Answer:

The correct answer will be- Crop rotation

Explanation:

When the growth of a type of crop which uses soil nutrients in abundance and then growing another crop in the same filed led to the decrease in the production of the next crop.

Thus farmers adapted to avoid such farming practices and developed a new practice which allowed the land to become fertile again so that the growth of next crop will not be affected.

The practice involved the planting of a crop on a piece of land then leaving the soil ploughed and unsown for a longer period of time and growing corp on another piece of land allowing the time to restore the nutrient content. This practice is known as "crop rotation".

Thus, crop rotation is the correct answer.

8 0
4 years ago
Which part of the microscope is used to make small adjustments in the image of an object?
Rus_ich [418]

Answer:

The part of the microscope that is used to make small adjustments in the image of an object is the fine adjustment.

Explanation:

In the optical microscope, the fine adjustment knob allows precise focusing of the sample being studied.  This means making minimal adjustments in order to better observe the microscopic image.

After the initial focusing with the coarse adjustment knob, with the fine adjustment it is possible to highlight the details that require more attention, as well as the refringency of the sample, if it exists.

The other options are not correct because:

<em>     A. </em><em><u>Eyepiece</u></em><em>  is the lens that receives the image from the objective lens, that has contact with the eyes of the observer.</em>

<em>     C. </em><em><u>Coarse Adjustment  </u></em><em>is the rough magnification, used for the initial approximation of the image.</em>

<em>     D. </em><em><u>Objective lens</u></em><em> enlarges and defines the image of the sample on the slide.</em>

6 0
4 years ago
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