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USPshnik [31]
2 years ago
12

The branch of biology concerned with the relationships of organisms to one another and their

Biology
2 answers:
ELEN [110]2 years ago
5 0
Ecology is the answer believe me
mina [271]2 years ago
4 0
Ecology.

Ecology is the study of the interrelationships of living organisms with each other and with their environment.
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3 years ago
The OECS was established on ?<br>​
charle [14.2K]

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It was established on June 18 of 1981.

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2 years ago
Define the 3 signals for activation and the 3 outcomes of the complement system.\
sp2606 [1]
* More than 40 proteins and glycoproteins involved in the complement system are synthesized by the liver, macrophages, epithelial cells, they are present in the blood in plasmatic form, membrane, some have an enzymatic activity, regulator or membrane receptorThese are elements of the humoral innate immune response, they fight infections, purify immune complexes and apoptotic bodies.
<span>There are indeed three ways to activate the complement:</span>
Classical pathway: Activated by Immunoglobulins in immune complexes, aggregated Immunoglobulins, DNA, CRP, apoptotic bodies .......it involves nine fractions, starting with C1, then C4, C2, C3, to form a classical C5 convertase, then, activation of C5, C6, C7, C8, C9.

Alternative pathway: activated by polysaccharides (bacterial endotoxin), vascular wall poor in sialic acid, aggregated IgE ...C3b like is the first component in the alternate channel cascade, it will create an amplification loop, and form an alternative C5 convertase.

Lecithin pathway: Activated by mannose, fucose (carbohydrate of microorganisms)The first component is the complex MBL / MASP1 / MASP2: "mannose-binding protein": works according to the same principle as the complex C1 of the classical way (MASP2 cleaves the C4 and the rest of the cascade is equivalent to that of the classical way).

the three ways have the same outcome: A C5 convertase (formed by one of the pathways) cleaves C5 into C5a and C5b: C5b is deposited far from other fractions on the antigenic surface. The fixation of C5b in the cell is followed by that of C6, C7, C8, and C9 (9 molecules of C9): formation of the membrane attack complex (MAC) ==> Death of the cell by osmotic shock
8 0
3 years ago
When people cut themselves, they have clotting factors in their blood that will be released continuously in a cascade until thei
mixas84 [53]

The mechanism of <u>coagulation </u>involves the activation, adhesion, and aggregation of platelets to cause blood clotting.

7 0
2 years ago
Como aseguramos que en la mitosis la nueva célula es idéntica a la célula madre ?!!!
lozanna [386]

Answer:

The daughter cells are genetically identical because mitosis is a process that ensures the equal distribution of the replicated genetic material between these cells

Explanation:

During mitosis, the DNA is duplicated during the interphase (S-phase). Subsequently, the replicated chromosomes are arranged in the center of the parent cell (metaphase) to be finally separated and equally distributed between the daughter cells.

8 0
3 years ago
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