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Semmy [17]
2 years ago
14

How much brighter is Proxima Centauri than the Sun? (Astronomy just doesn't show up)

Biology
1 answer:
Tpy6a [65]2 years ago
4 0

Answer:

It contains only about an eighth of our sun's mass. Faint red Proxima Centauri is only 3,100 Kelvin (5,100 degrees F or 2,800 C) in contrast to 5,778 K for our sun. So Proxima is 500 times less bright than our sun.

Explanation:

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HELP ASAP PLEASE!!!!!!!
zmey [24]

Answer:

None

Explanation:

Because it is controlled hence in our control soooo.... No need to test

6 0
3 years ago
The posterior, inner part of the eye is called the __________ of the eye.
marshall27 [118]
The retina; I may be wrong.
8 0
3 years ago
What is the force of resistance acting between objects in contact and tending to dampen their motion?
Zanzabum

Answer: 3.friction

Explanation: friction is a force of resistance acting between objects in contact and tending to dampen their motion

8 0
4 years ago
Read 2 more answers
Why is water considered a to be abiotic
Firdavs [7]

Because water is not alive

7 0
3 years ago
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Each of the following will enhance and promote phagocytosis, except Multiple Choice tumor necrosis factor (TNF) and other cytoki
ozzi

Answer:

The correct answer is: deposition of interferon on bacterial cells.

Explanation:

Phagocytosis is the mechanism by which a cell uses its plasma membrane to ingest a big particle, forming a phagosome within the cell. It's a form of endocytosis used by the <u>immune system to eliminate pathogens such as </u><u>bacteria </u><u>and cell debris</u>.

Phagocytosis can be enhanced through various ways when an infection is taking place in the body. For example, cytokines and TNF are secreted by different kinds of cells to stimulate this process - for these cytokines to be released, certain parts of the bacteria called PAMPs need to be recognized by specific receptors located in phagocytes and epithelial cells called TLRs. Another way to stimulate this mechanism is by depositing complement fragments on bacterial cells, which is done thanks to the Complement cascade, a system of great importance in the innate immune response against extracellular bacteria - these fragments will opsonize ("mark") the pathogens for the phagocytes to recognize them and engulf them.

Interferon, on the other hand, while hugely important on the immune response against viruses and other pathogens that infect our cells by entering them and using their organelles to replicate and translate proteins, is not an enhancer of phagocytosis, as it is mostly involved in the translation of genes that will lead to the infected cell's death.

5 0
3 years ago
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