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NikAS [45]
3 years ago
7

What are the most basic components of all ecosystems? what are the most basic components of all ecosystems? communities of organ

isms nutrients and energy the living, or biotic part, and the abiotic producers, consumers, and decomposers volcanoes, wind, oceans, and other abiotic parts submit?
Biology
1 answer:
sesenic [268]3 years ago
3 0
Cells and the stems of them
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faltersainse [42]
 Chemical Weathering<span> results from chemical reactions between minerals and Water. Water dissolves calcite </span>more<span> readily than it </span>does<span> feldspar, so calcite is considered a chemical reaction with water.


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Certain amino acids are called essential because they ______.
kumpel [21]
Essential amino acids are amino acids that must be supplied to one's body by their diet because they cannot be synthesized from scratch. 
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Arrange the order of events for the internalization of LDL particles into cells:
ElenaW [278]

Answer:

The correct answer is "5-1-3-2-4".

Explanation:

Internalization of LDL particles into cells, is needed to form the intracellular vesicles known as endosomes. The order of events that allow for this process are:

5) LDL receptors migrate to the cell surface and cluster in clathrin-coated pits. Clathrin acts directing the receptors to the cell membrane region where endosomes are formed.

1) A combination of cholesterol and apolipoprotein binds to LDL receptors and becomes internalized as endocytotic vesicles. Once the receptors are in the proper cell membrane region, cholesterol and apolipoprotein are bound and internalized.

3) Several endocytotic vesicles fuse to form an endosome.

2) The environment of the endosome becomes acidic, which causes the LDL to dissociate from its receptor; additionally, the endosome fuses with a lysosome. LDL should be dissociated from its receptor since it is going to be degraded in the following step.

4) The LDL particle is degraded by the lysosome. This takes place after endocytosis, when LDL particles are transported into lysosomes once they are fused, cleaving the cholesterol esters into cholesterol and fatty acids.

6 0
3 years ago
A spinal-epidural, also called a(n) __________ epidural, is a system of administering continuous doses of anesthetic to a woman
Rudik [331]

The epidural anesthesia is a method of pain relief, which is used during the labor pain. It is a well known regional anesthesia. It works by acting as an analgesic, which means a substance that eases the pain, a complete anesthesia or loss of feeling does not occur in the case of epidural anesthesia. It blocks the nerve signals from the lower spinal segments. It is also known as spinal epidural anesthesia or lumbar epidural anesthesia.  

Hence, the black can be filled with lumbar.


7 0
3 years ago
According to the nebular theory, a solar system begins when an interstellar cloud, containing approximately 75% hydrogen, 25% he
azamat

"Gravitational attraction" is initially responsible for the formation of the clumps of matter within this interstellar cloud.

<u>Answer:</u> Option C

<u>Explanation:</u>

About 4.6 billion years ago, the solar systems were a bunch of gases and dusts, referred to solar nebula. Gravity squeezed the material as it started to rotate, creating the sun at the middle of the fog.

The rest of the material began to accumulate with the sunrise. The smaller particles moved together to form larger particles that were connected by gravity. As lumps develop, gravity increases and turns into kinetic energy of moving particles that collide and produce heat.

4 0
3 years ago
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