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mariarad [96]
3 years ago
5

Why does the cell membrane have transport proteins?

Biology
1 answer:
Alexxandr [17]3 years ago
7 0
Proteins help molecules across the membrane via passive transport. process called facilitated diffusion
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Nuestro planeta esta habitada por numerosas ____, muchas de ellas extendidas en grandes y diversas zonas. Sin embargo, existen e
FinnZ [79.3K]

Answer:

Nuestro planeta esta habitada por numerosas <em>especies</em>, muchas de ellas extendidas en grandes y diversas zonas. Sin embargo, existen especies que habitan una sola <em>área/región</em> con características<em> ambientales</em> únicas para su desarrollo.

Explanation:  

Entre las miles de especies que habitan el planeta, muchas de ellas pueden estar ampliamente distribuidas, mostrando adaptaciones a una gran variedad de ambientes y hábitats, mientras que muchas otras solo se encuentran restringidas a determinadas areas o regiones particulares que presentan condiciones ambientales determinadas. Esta diferencia en distribución esta muy relacionada a la historia de la especie,  a la edad de la misma sobre la tierra, adaptaciones a los ambientes y capacidades reproductivas y de dispersión.

Dentro de la clasificación de especies de acuerdo a su distribución, podemos mencionar a las especies

  • nativas: aquellas que habitan y se distribuyen las áreas naturales donde se originaron,
  • endemicas: entran dentro del concepto de nativas, pero a parte se caracterizan por habitar <u><em>unicamente</em></u><em> una región en particular debido a las condiciones ambientales</em> que les son propicias para su desarrollo. Estas especies no pueden trasladarse a otras regiones.
  • exoticas: aquellas especies que salen de su area natural de distribución para habitar otras areas mas lejanas. Allí pueden establecerse e interactuar con especies nativas sin causar grandes daños.
  • invasoras: especies exoticas que llegan a otras areas, que se establecen y que tienen la capacidad de reproducirse a una tasa superior a la de las especies nativas, invadiendolas y desplazandolas. Interactuan con las especies nativas y causan daños importantes.

Los términos nativos, endemicos, exóticos son <em>relativos al área a la que se esté haciendo alusión</em>: un continente, un país, una región o un bioma.

5 0
2 years ago
What problems might result from the prolonged administration of cortisol to a person with severe inflammatory disease?
ki77a [65]

Answer:

The prolonged exposure to cortisol hormone may cause different health problems including anxiety, depression, muscle atrophy, hypertension, metabolic problems, diabetes, myopathies, osteoporosis, etc.

Explanation:

Cortisol is a stress hormone secreted by the adrenal glands, it is a steroid hormone that is involved in diverse functions including the control of metabolic and immune responses, salt balance (blood pressure), etc. Moreover, cortisol hormone also has anti-inflammatory properties. However, prolonged exposure to stress hormones like cortisol is associated with different health problems, especially anxiety and depression.

3 0
3 years ago
What does excretion mean in science?
Dovator [93]
It means, process of eliminating waste matter..
3 0
3 years ago
Corals form symbiotic relationships with microscopic photosynthetic algae that live in their cells and give the corals their dis
12345 [234]

Answer and Explanation:

Corals are translucid or white, but they look brightly colored because they host symbionts with colorful photosynthetic pigments . They can host different organisms that live on and among them, giving place to an amazing ecosystem.    

One of these organisms is the photosynthetic unicellular microalgae, called zooxanteles, that are colorful and provide nutrients to the coral.  

Corals provide shelter and protection to the algae, while algae provide nitrogenated nutrients, sugars, and color to the corals. Algae can store nitrogen in their tissues as nitrogen-rich crystals, which are constantly provided to corals.

This symbiotic relation allows corals to grow in different environments that are poor in nitrogen or other nutrients, such as the tropical clear waters.

When changes in radiation, temperature, or salinity in water occur, corals react to these changes losing these algae and becoming translucid again.

8 0
3 years ago
Which observation about the Rocky Mountains and the Appalachian Mountains would support the claim that exposure of weathering an
Ostrovityanka [42]

Answer:

B: The shorter and more rounded the Appalachian Mountains are more than four times older than the taller and more jagged Rocky Mountains

Explanation:

  • The Appalachian mountains form a system of mountains in eastern North America and are older than rocky mountains as they were formed 480 million years ago and are similar to those of the alps. They form a barrier to the east to the west.
  • They extend to southeast Canada and form zones of 300 miles wide. They form the mountain ranges surrounding hills and the dissected plateaus forming at an elevation of 6,684 meters from the sea level. <u>Whereas the rocky mountains are younger and have an elevation of 4,401 meters.</u>
3 0
3 years ago
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