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Alexus [3.1K]
3 years ago
12

An ecosystem is defined by the

Biology
1 answer:
NISA [10]3 years ago
5 0

Answer:

organisms living in a particular area

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When does movement of materials in and out of the cell NOT require energy
Yuliya22 [10]
Answer : Passive transport mechanism

Explanation: Passive and Active transport mechanisms are the two types of transport mechanisms by which molecules move in and out of the cell membranes. Passive Transport mechanisms do not require energy from cells. The movement of the molecules from High to Low concentration requires no energy. E.g. Osmosis, simple and facilitated diffusion.
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Which describes the horizons in a soil profile? Horizon A is mineral deficient. Horizon O forms from organic material. Horizon B
andrew-mc [135]
Answer: Horizon O forms from organic material. And Horizon C is least affected by the soil formation process. Bedrock lies below the soil layers.
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2 years ago
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macrophage are immune system cells that patrol the blood and body tissues. when a macrophage finds a foreign invader, the macrop
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macrophage are immune system cells that patrol the blood and body tissues. when a macrophage finds a foreign invader, the macrophage ingests (takes in) the foreign invader and then chemically digests (breaks down) that foreign invader. to perform this frequent chemical digestion, macrophage have more than the average body cell is

Macrophages are immune system cells that are vital to the development of non-specific defense mechanisms that provide the first line of defense against pathogens. These large immune cells are present in nearly all tissues and actively remove dead and damaged cells, bacteria, cancerous cells, and cellular debris from the body.

What is Macrophages?

Macrophages are specialized cells that hunt for, engulf, and kill bacteria and other dangerous organisms. They can also activate other cells by releasing substances known as cytokines, which present antigens to T cells and start an inflammatory response.

Blood monocytes that leave the bloodstream to differentiate in various organs give rise to macrophages. Each macrophage population exhibits significant variety, which most likely reflects the level of specialization necessary for each tissue's environment.

To learn more about Macrophages

brainly.com/question/12028327

#SPJ4

6 0
2 years ago
What is the name of the type of reaction that occurs when two substances join to form a single product?
Alekssandra [29.7K]

Answer:

Synthesis reaction

Explanation:

hope this helps

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15 Activation energy is the energy that a system must have before a chemical reaction can occur.?
Bezzdna [24]

Answer:

true

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I hope it helps

please follow me for more answers

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