Answer:
Solutes dissolved in water on either side of the cell membrane will tend to diffuse down their concentration gradients, but because most substances cannot pass freely through the lipid bilayer of the cell membrane, their movement is restricted to protein channels and specialized transport mechanisms in the membrane. Although ions and most polar molecules cannot diffuse across a lipid bilayer, many such molecules (such as glucose) are able to cross cell membranes. ... Channel proteins form open pores through the membrane, allowing the free passage of any molecule of the appropriate size.t is the proteins, therefore, that give each type of membrane in the cell its ... Many extend through the lipid bilayer, with part of their mass on either side ..... Many hydrophobic membrane proteins can be solubilized and then purified in an active, if not entirely ..... Many Membrane Proteins Diffuse in the Plane of the Membrane.
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Warning Dont copy all of this i just answered this question to give you idea of what it is
Answer: they are not living things
Explanation: The virus needs a living cell to multiply because on they're own they can't do anything.
Answer:
2) -b
3)-c
4)-c
Explanation:
i took this test like not even 3hours ago
#hit me up if you need any queshtions answered within secs/mins and I gotchu!
1.
the Changes of the Human Bodies
2. Shapes Different Careers
3. Provides Answers to Large-scale Problems
4. Teaches Concepts on Basic Living
5. Helps in Answering the Fundamental Questions About Life
6. Have another for (good luck) Paves Way for Scientific Investigations
Answer:
A. Erosion from wind, water, or ice removes crustal material.
Explanation:
Plain formation can occur in many different ways some plates some planes can form as wind, water and ice erode wear away or remove dirt and rocks on higher land.
Wind picks up and carries along small particles which can be abrasive against surfaces, slowly wearing them away to form more particles. The water and ice transport the fragments of rock and dirt as sediment down hillsides, where it is eventually deposited. This occurs until several layers of sediment are accumulated. Plains can also form at the bases of mountains where water carries a flow of sentiments downhill to flat areas where it further spreads out to deposit the sediment in a fan shape -this is called an alluvial plain.