Where does photosynthesis occur in the biosphere? Check all that apply.

Biology

2 answers:

riadik2000 [5.3K]4 years ago

6 0

In producers i need at least 20 characters but hi

Dmitry [639]4 years ago

5 0

The energy required to drive nutrient cycling is obtained by processes occurring in the biosphere. The primary source of energy for ecosystem processes is photosynthesis. Directly or indirectly, photosynthesis provides the energy for all forms of life in the biosphere. Photosynthesis utilizes energy from the sun to reduce CO2<span> into high energy organic compounds. Subsequently, the energy contained in these organic compounds is released by the process of respiration. The respiration process releases energy by oxidizing the high energy bonds of the organic compounds, the energy released being used to perform all the metabolic processes of biota.

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If you treated embryos with a Notch inhibitor how would this affect the specification of venous and arterial endothelial cells?

Alisiya [41]

Answer:

d. all endothelial cells would be venous

Explanation:

The Notch signaling pathway is a cell signaling system which consist basically of 4 NOTCH genes ( NOTCH1, NOTCH2, NOTCH3, and NOTCH4) each of them having the information to build a particular cell membrane receptor protein.

It has been demonstrated in zebrafish embryos that Notch signaling are highly determinant factors during vascular development, and a key function of these genes was specifically to regulate the differentiation of arterial fate in endothelial cells.

Notch signaling-deficient embryos showed a loss of expression of arterial markers such as ephrinB2 from arterial vessels with an accompanying expansion of venous markers into normally arterial domains. In contrast, embryos in which Notch signaling had been ectopically activated, meaning an activation out of "proper" place (where not expected, e.g. venous endothelial), exhibited the contrary phenotype, this is a suppression of vein-specific markers with ectopic expression of arterial markers in venous vessels.

To summarize, when Notch is supressed (in this case inhibited with a specific Notch inhibitor) arterial fate of endothelium is not followed, and venous fate is stablished. Thus, endothelial cells (those expected to form venous tissues but also arterial ones) would specified as venous.

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3 years ago

Owners of nurseries most likely conduct _____ to grow many of their plants and fruit trees. vegetative propagation vegetative re

lesya692 [45]

<span>vegetative propagation.

Budding and grafting. It is mainly used for propagating a plant. In layering sometimes the portion of the aerial stem grows roots while it is still attached to the main plant and then it is separated from the main plant and allowed to grow on its own. This is another technique used for layering. </span>

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3 years ago

Now assume that while studying the species, another researcher suggests that changes in land-use in the habitat of axis deer in

GaryK [48]

Answer:

Yes.

Explanation:

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Read 2 more answers

Which of these are an important part of a scientific process?

viva [34]

Answer:

A.Testable hypotheses