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Black_prince [1.1K]
3 years ago
8

This is an organism that obtains its energy from inorganic substances or from the sun.

Biology
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

Autotrophs

Explanation:

They are the producers in the ecosystem.

Autotrophs are organisms that produce food food from sunlight or from inorganic substances via chemical processes.

They obatin their energy by converting very simple materials into complex and useful organic compounds for use in the ecosystem. One of such process is photosynthesis in which green plants uses sunlight and carbondioxide to produce glucose for their nourishment. Another of such process is chemosynthesis.

Most heterotrophs(consumers) relies on this source of energy for their own survival and nourishment.

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This is the elliptical orbit of the Earth around the Sun. It takes 365.26 days to complete one orbit.
Strike441 [17]

Answer:

Complete orbit around the Sun takes about 365.26 days. The Earth’s rotation axis is tilted relative to the imaginary space orbit around the Sun.  This imaginary plane is called the ecliptic plane.  Position of northern and southern hemisphere toward the Sun varies depending on the season

Explanation:

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2 years ago
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you are a molecule of phosphorus. choose a starting point in the phosphorus cycle and describe the process you would go through
coldgirl [10]
Plants absorb me from the soil through assimilation, I am eaten by animals the animals and plants die and decompose where I am released back into the soil, weathering and erosion cause me to release out of rocks, I then find my way into the ocean being carried by water, I then return to the soil through the water.
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3 years ago
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Is blood clotting an example of a positive or negative feedback mechanism? Explain your answer based on the description of the m
serg [7]

Answer:

Blood clothing is an example of positive feedback.

This type of feedback mechanism is useful to the body because it multiplies the factor that intervenes in clotting accelerating the process.

If a toxin affects the molecules that signal for platelets the feedback will not be effective enough to produce clotting and the body will keep bleeding.

Explanation:

Blood clotting is an example of positive feedback due to the fact that when the vascular endothelium is damaged  platelets will go to this area and activate themselves once they are in contact with the collagen fibers of the damaged structure. When the platelets are activated they will release the contents that is stored in their granules. One of the contents is a Gq-linked protein receptor cascade,  that will increase the concentration of calcium in the platelets. Calcium activates protein kinase C, which, in turn, activates phospholipase A2 (PLA2). PLA2  will modifies  an  integrin membrane  increasing its affinity to bind fibrinogen. The activated platelets change their  shape , and the fibrinogen cross-links with the integrin membrane aiding  in  the aggregation of adjacent platelets. After this the coagulation cascade takes place. there are two pathways the extrinsic  and the extrinsic one.

The extrinsic pathway will be activated due to tissular factor released  by the platelets and the intrinsic pathway will be activated due to endothelial collagen. The final product of both pathways is factor x.

Factor x will transform prothrombin into thrombin will activate the conversion of fibrinogen into fibrin. Thrombin will form a net of fibrin that will the clot.

A cascade reaction is useful because every component of the cascade are related making a quick reaction once that one of then is activated and can activate other or more factors.

If a toxin affects the molecules that signals for platelets, platelets will not go to the damaged area and in consequence there will not be thrombin and fibrin to form the clot together with platelets.

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3 years ago
Both the heart and arteries contract to pump blood throughout the body. Please select the best answer from the choices provided.
rosijanka [135]

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Hence, the given statement is true.

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What phase during meiosis is the chromatin visible?
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Answer:

During the prophase

Explanation:

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