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cluponka [151]
3 years ago
7

What is the make-up (structure) of the plasma membrane? what makes the plasma membrane selectively permeable? how are the phosph

olipids of the plasma membrane arranged?
Biology
1 answer:
devlian [24]3 years ago
3 0
Lipid bilayer model was proposed for its structure but it was modified and new structure is according to fluid mosaic model. Plasma membrane is selectively permible as it selects small molecules like lipid etc (composition is also of lipid and as solubility principle like dissolve like) so large and charged molecules like plasma and ion can't pass through it. Lipid are in form of layer so at the chain when ever other phosphate group attach the place conjugate molecule (phospholipid ) formed
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Nobel, who has terminal cancer, has been in a depressed state for several weeks. the most effectve way to help him move out of t
Stells [14]

The right answer is have a frank, open discussion with him about his feelings.

The combination of a depressive disorder with a serious physical illness such as cancer can make the identification and treatment of depression more difficult. Indeed, the symptoms of depression may be underestimated and attributed to the other disease.

4 0
3 years ago
What are the 3 stages of the cell cycle in order?
gogolik [260]

Answer:

The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.

8 0
3 years ago
There are several different kinds of aquatic ecosystems. Bogs get their water from precipitation, so they don't have many Fill i
Ratling [72]
  1. Bogs get their water from precipitation, so they don't have many <u>nutrients</u>.
  2. Marsh plants are adapted to waterlogged <u>soil</u>
  3. Swamps have <u>plants like trees and shrubs</u>.
  4. Rivers always have flowing currents and pick up <u>sediment</u> as they flow.
  5. Lakes are bodies of water on land.  
  6. Wetlands act as filters for nutrients and pollutants dissolved in the water.
  7. Estuaries are wetland regions where freshwater rivers mix with ocean water.

Explanation:

A wetland is a biome which has both water and land that are intermixed in various ways. According to the type of the wetland, the ecosystem differs.

Bogs: Wetland with water from precipitation and no inflow or outflow of surface or ground water.  

Soil: Acidic, infertile with less nutrient content

Vegetation: Acid-loving plants

Swamps: Forest wetlands near rivers and lakes.

Soil: well draining, mineral soil

Vegetation: Trees and bushes. Swamps are classified according to the vegetation, like coniferous swamp, hardwood swamp, shrub swamp etc

Marsh: Wetlands mostly inundated with water leading to waterlogged soil  

Soil: Organic and mineral soil

Vegetation: Hydrophytic plants adapted to waterlogged soil

Estuaries: Wetland regions enclosed by land one side where fresh water mixes with saline ocean water.  

Soil: Saline alkaline soil

Vegetation: Mangrove trees

Rivers and lakes are water bodies that form a part of wetlands.  

Rivers are flowing water bodies which flows through water current and picks up sediments as it flows.

Lakes are stationary water bodies that are enclosed by land mass on all its sides.

The wetlands act as a natural filter and receive all the sediments, pollutants etc which are dissolved in water and carried by the rivers and other water sources.

4 0
2 years ago
Read 2 more answers
What is homeostasis?
Vlada [557]
C - the ability of the body to keep a constant internal state

• Homeostasis is something like hunger, where your body will let you know that you are hungry so that you will eat, and keep your body stable

hope that helps! :)
6 0
3 years ago
Please use the graph to the
uysha [10]

Answer:

C

Explanation:

The dependent variable is always the outcome, data, or what is being measured in an experiment.

4 0
1 year ago
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