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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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Feathers are modified ______.<br> a. scales<br> c. lipids<br> b. hair<br> d. tibia
Anuta_ua [19.1K]
Feathers are modified as scales. According to the history, birds which have feathers are the descendants of the dinosaurs which have scales.
That's why feathers are categorized as scales in the present record according to studies. <span />
6 0
3 years ago
Tropical rain forests receive heavy rainfall. How do the trees and plants of this region withstand rotting?
Lina20 [59]

Answer:

The trees and plant withstand rotting in tropical rain forest using some of these mechanisms.

Explanation:

Tropical rain forests are known for the presence of heavy rainfall, due to this, there might be a lot of water retention in the root. Some trees and plants however are able to store this water and use some of the below mentioned methods to prevent decay and rot.

Some trees in the tropical rain forest may produce very hard outer layer, these hard outer layer will protect the plant and trees form predators and microorganisms from penetrating into the inner tissues of the tree.

Some withstand rotting by producing chemical compounds, these chemical compounds prevents predators and microorganisms from destroying the plants and trees.

5 0
2 years ago
1. Which of the following might be a result of adding a secondary consumer to the aquatic ecosystem in the accompanying illustra
MatroZZZ [7]

Answer:

  1. <u>Option-(A): </u>In an illustrated flowchart, the movement of carbon atoms through an aquatic food chain is indicated by arrows.
  2. <u>Option-(C)-</u> An increase in the population of scavengers.

Explanation:

  • The ecological pyramid is comprised of different level of organisms as the energy flow occur through them in a more directed form inside the different spheres depending upon the medium for energy transmission across the given parameters or area. As, the arrow provides us with a more directed way for understanding the transmission of energy through different organisms and there respective levels inside the ecological pyramid.
  • While, the increase in the level of scavengers or the animals which consumes the left overs of other living beings is balanced with the addition of the secondary consumers to the aquatic ecosystem.As, it will provide equal chances and energy to the different beings inside the ecosystem.
5 0
2 years ago
Number 3 and 4 Please! <br><br> Thanks in advance...
Ganezh [65]
What grade are you in if you are in 5th or 6th i can help you

5 0
2 years ago
I don't understand about this
Delicious77 [7]

Answer:

C. cu

Explanation:

sorry if im wrong

8 0
2 years ago
Read 2 more answers
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