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tangare [24]
3 years ago
6

What is a ecosystem?​

Biology
2 answers:
romanna [79]3 years ago
3 0

Its is something that girl is my dream pet two

Explanation:

Nuetrik [128]3 years ago
3 0

Answer: A biological community of interacting organisms and their physical environment. Hope this helps! :) brainliest?

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A patient approaches you yelling that their schedule appointment was at hour ago and they still haven’t been seen the angrily po
Karolina [17]

Answer:

anything that could escalate

Explanation:

what are the choices? i would think that you keep your temper very low do not raise your voice and try to get them into a seperate room so that you can try to calm them down

5 0
3 years ago
Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest Of all sub
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arbon, as with many elements, can arrange its atoms into several different geometries, or "allotropes." In pure diamond, every carbon atom is covalently bonded to exactly 4 other carbon atoms in a very specific and energetically favorable geometry. The diamond cannot be broken or scratched unless many covalent bonds are broken, which is difficult to do. In another common allotrope, graphite, every carbon atom is covalently bonded to only 3 other carbon atoms, and the atoms are arranged in sheets that are not covalently bonded to each other. The sheets can be broken apart easily, ultimately meaning that graphite can be easily scratched. Coal is composed of particles of different allotropes of carbon, and some "amorphous carbon," which has no defined geometry in its atomic structure. Without a continuous network of covalent bonds, coal is easily scratched (i.e. it is not hard).



8 0
3 years ago
The four main spheres of the exterior of Earth are the _____. atmosphere, cryosphere, hydrosphere, and lithosphere anthrosphere,
Liula [17]

Answer: lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air).

Explanation: Hope this helps!!!

8 0
2 years ago
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5 0
2 years ago
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For both actin and microtubule polymerization, nucleotide hydrolysis is important for ______. Group of answer choices promoting
jarptica [38.1K]

Answer:

For both actin and microtubule polymerization, nucleotide hydrolysis is important for decreasing the binding strength between subunits on filaments.

Explanation:

Cytoskeletal filaments are common to eucaryotic cells and are impotartant to the spatial organization of cells. Intermediate filaments provide mechanical strength and resistance to shear stress. Microtubules determine the positions of membrane-enclosed organelles and direct intracellular transport. Actin filaments determine the shape of the cell's surface and are necessary for whole-cell locomotion. A large number of accessory proteins are present that link the filaments to other cell components, as well as to each other. Accessory proteins are essential for the assembly of the cytoskeletal filaments in particular locations, and it includes the motor proteins that either move organelles along the filaments or move the filaments themselves.

Actin filaments and microtubules are assembled with expenditure of energy i.e the ATP/GTP tightly bound to actin/tubulin is irreversibly hydrolyzed to ADP/GTP during the assembly process, and liberation of Pi in the medium occurs subsequent to the incorporation of subunits in the polymer. Pi release acts as a switch, causing the destabilization of protein-protein interactions in the polymer, therefore regulating the dynamics of these fibres. The progress is made in four areas: the chemistry of the NTPase reaction; the structure of the intermediates in nucleotide hydrolysis and the nature of the conformational switch; the regulation of parameters involved in dynamic instability of microtubules; and the possible involvement of nucleotide hydrolysis in the macroscopic organization of these polymers in highly concentrated solutions, compared with the simple case of a equilibrium polymers.  

4 0
2 years ago
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