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kykrilka [37]
3 years ago
5

How does simple diffusion differ from facilitated diffusion

Biology
1 answer:
vovangra [49]3 years ago
5 0

Simple passive diffusion occurs when small molecules pass through the lipid bilayer of a cell membrane. Facilitated diffusion depends on carrier proteins imbedded in the membrane to allow specific substances to pass through, that might not be able to diffuse through the cell membrane.

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Which activity causes the least amount of wetland and estuary degradation when it occurs near the coast?
krek1111 [17]

Answer:

The activity which causes the least amount of wetland and estuary degradation when it occurs near the coast is:

A. dune grass rehabilitation

Explanation:

This is actually a rehabilitation effort, unlike the other three options that cause land degradation.  A dune grass rehabilitation accretes sand and minimizes the rates of beach erosion. The program tries to protect coastal infrastructure and upland properties from storm damage by planting vegetation, fencing off sensitive areas, blocking storm surge, creating dune walkways, and absorbing wave energy.  During dune grass rehabilitation, activities that adversely affect the dunes are avoided.

4 0
3 years ago
Describe all the ways that a single tree might be involved in the carbon cycle.
avanturin [10]
<span>A single tree absorbs tons of carbon dioxide in its 30-year life cycle and it releases a ton of oxygen. The free nitrogen from the atmosphere is captured by the nitrogen-fixing bacteria and it converts nitrogen into nitrates and nitrites which is then absorbed by the plants. Trees, like all organisms, grow by adding mass (biomass). Carbon is the central ingredient in making that new biomass. Tree biomass is comprised of all parts of the tree; leaves, stems, branches, roots, tree trunks. The biomass of the woody tissue in the tree pictured on the right is made mostly of cellulose, a carbon compound. In a process called carbon fixation, plants transform CO2, an inorganic carbon compound into organic carbon compounds.</span>
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3 years ago
Name the following hydrocarbons
Alexeev081 [22]

Answer:

1) Pentane       2) 2-Pentene

Explanation:

Both molecules have five carbons so you will add thhe prefix "pent-" and the first molecule only has single bonds so it will end in "-ane" because is it an Alkane. The second hydrocarbon has a double bond; therefore, it's a Alkene resulting in the ending of "-ene". BUT the double bond is located on the second carbon; therefore you must add "2-" before the name.

5 0
3 years ago
Describe how you would test a sample of powdered milk to see if it contained protein ​
weeeeeb [17]

Answer:

How would you  contained protein ​

Explanation:

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3 years ago
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The process of producing a mature spermatozoon through mitosis and meiosis is called spermatogenesis

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2 years ago
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