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Sladkaya [172]
3 years ago
8

Because particles move randomly, molecules tend to move across the membrane in both directions.does the model indicate that the

molecules are moving in equal amounts in both directions? Justify your answer using complete sentences.
Biology
1 answer:
Misha Larkins [42]3 years ago
8 0

Because particles move randomly, molecules tend to move across the membrane in both directions. Yes, the  model indicates that the molecules are moving in equal amounts in both directions. This calld the state of equilibrium where the forward and backward movements are equal hence the net movement  is equal to zero

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All of Earth's biomes and ecosystems, except the most remote, are affected by the impact that humans have made on the environmen
irina [24]

Answer:

b. False

Explanation:

All biomes, even the most remote, are affected by the impact humans have on the environment.

Humans have been causing deforestation, pollution, agricultural expansion, mining, desertification, extinction of animals and plants, burning and other practices that have had extremely negative impacts on biomes around the world. In addition, all the pollution and exploitation of nature that humans have caused has caused harmful climate change that has affected even the most remote biomes.

The biome is a large set of interconnected ecosystems. Ecosystem, in turn, is an ecological system where there is life and interaction between living beings in a given space, and can vary in size, from a puddle to a large forest.

7 0
3 years ago
Which statement describes the proper procedure for identifying an organism by using a dichotomous key?
Zinaida [17]

Explanation:

A dichotomous key is a tool that allows the user to determine the identity of items in the natural world, such as trees, wildflowers, mammals, reptiles, rocks, and fish. Keys consist of a series of choices that lead the user to the correct name of a given item. "Dichotomous" means "divided into two parts".

5 0
3 years ago
The advantage of a closed circulatory system over an open circulatory system is that
Ber [7]
Hello friend!!

Circulation-<span>is the movement of substances such as nutrients and gases within blood vessels and cavities throughout the body.

</span>

Not all animals have a circulatory system.                                                      Poriferans, cnidarians, platyhelminthes and nematodes (nematodes have pseudocoelom fluid but no vessels) are avascular animals. Echinoderms do not have true circulatory systems either.

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Blood is a fundamental means of substance transport for larger animals since, in these animals, tissues are distant from each other and from the environment thus making diffusion impossible.

Circulatory systems can be classified into open circulatory systems and closed circulatory systems.

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Arthropods, molluscs (cephalopods are exception) and protochordates have open circulatory systems.


A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason, the blood pressure is higher in animals with closed circulatory systems. The cellularity of the blood is also higher, with many specific blood cells.

Closed circulatory systems are a feature of annelids, cephalopod molluscs and vertebrates

A closed circulatory system is more efficient. Since blood circulates only inside blood vessels, it has a higher pressure and, as a result, can travel greater distances to the organs where hematosis happens and to peripheral tissues. In addition, the higher circulatory speed increases the animal’s capacity to distribute large supplies of oxygen to tissues that consume it in large amounts, such as muscle tissues, which can then perform faster movements. Animals with an open circulatory system (with the exception of insects, which carry out gas exchange separately from circulation) are generally slower and have a low metabolic rate.


<span>In insects, the circulatory system is open but this system does not participate in the gas exchange process or in oxygen supply to tissues. Gases enter and exit through the independent tracheal system, which allows for the direct contact of cells with the ambient air. Therefore, an insect can supply the large oxygen demand of its fast-beating wing muscles even though it has an open circulatory system.</span>

<span>
</span>

<span>Hope It helps!!</span>

<span>All the Best!!</span>

7 0
3 years ago
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jasenka [17]
<span>If you are using a screwdriver to pry open a paint can, you are using what type of simple machine?

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wheel and axle

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work


What simple machines would move or turn an object?



wheel and axle


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First Class


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Decrease the height of the ramp


</span>
6 0
3 years ago
Yo can someone help me out
Mekhanik [1.2K]

Answer:

I think the answer is A

Explanation:

As temperature rises, molecules move faster, so logically it would make sense that the answer would be A since the temperature rose from 10.0 to 10.7.

6 0
3 years ago
Read 2 more answers
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