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The plasma membrane is formed primarily of a phosphor lipid bi-layer which can be saturated or unsaturated depending on the most profound fat ingested by the body. Composed of glycerol, phosphorus, and H2O (i think). Phosphor Lipids are commonly the only lipid found in the plasma membrane, however there are active protein channels and also passive channels activated by pressure formed by potassium inside the cell and sodium outside.

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How many times does an oxygen molecule cross a plasma membrane when moving from inside an alveolus to the hemoglobin of a red blood cell and what are the plasma membranes?

When an oxygen molecule moves from inside an alveolus to the hemoglobin of a red blood cell, it crosses two plasma membranes. The first is the alveolar epithelium's plasma membrane, separating the alveolus from the capillary, and the second is the red blood cell's plasma membrane, where the oxygen binds to hemoglobin for transport. Plasma membranes are the outer boundary of cells that regulate the passage of substances in and out of the cell.


When a signal molecule such as a growth hormone binds to a receptor protein in the plasma membrane it stays on the outside of the cell. How might the inside of the cell know that the signal has bound?

When a signal molecule binds to a receptor protein on the cell membrane, it triggers a cascade of signaling events inside the cell through intracellular signaling molecules like second messengers. These second messengers relay the signal from the receptor at the cell membrane to the cell's interior, which initiates a response by activating various cellular processes. This signal transduction pathway enables the inside of the cell to detect and respond to the binding of the signal molecule at the membrane.


What is the structure of an animal cell membrane?

The animal cell membrane is composed of a phospholipid bilayer with embedded proteins. The phospholipids have a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tail, arranging themselves to create a barrier. Proteins are interspersed throughout the membrane performing various functions such as transport, communication, and structural support.


What is the most abundant element on the face of the earth?

Oxygen is the most abundant element in the earth's crust.


The cell membrane is composed of two layers?

The lipid bilayer makes up the membrane of a cell. The lipid bilayer consists of opposing phospholipids, where the polar ends of both the top layer and the bottom layer of phospholipids face opposite directions.

Related Questions

What is the second most abundant plasma protein?

Albumin is the second most abundant plasma protein after globulins. It plays a crucial role in maintaining blood volume and regulating osmotic pressure in the blood vessels.


What is the biological function?

Lipase is a enzyme used to cleave lipids, usually membrane lipids. Phosolipase C is a power second messenger used in intercell signaling. Lipase is a enzyme used to cleave lipids, usually membrane lipids. Phosolipase C is a power second messenger used in intercell signaling.


What is biologic function?

Lipase is a enzyme used to cleave lipids, usually membrane lipids. Phosolipase C is a power second messenger used in intercell signaling. Lipase is a enzyme used to cleave lipids, usually membrane lipids. Phosolipase C is a power second messenger used in intercell signaling.


What second messenger enters the cell through the plasma membrane?

Carries information throughout the body and to other cells.


How many times does an oxygen molecule cross a plasma membrane when moving from inside an alveolus to the hemoglobin of a red blood cell and what are the plasma membranes?

When an oxygen molecule moves from inside an alveolus to the hemoglobin of a red blood cell, it crosses two plasma membranes. The first is the alveolar epithelium's plasma membrane, separating the alveolus from the capillary, and the second is the red blood cell's plasma membrane, where the oxygen binds to hemoglobin for transport. Plasma membranes are the outer boundary of cells that regulate the passage of substances in and out of the cell.


Is silica is the most abundant material on earth?

No,the second most abundant


Difference between lipid soluble and water soluble?

The use of a second messenger


Which gas in the atmosphere is the second most abundant gas?

Oxygen is the second most abundant gas in Earth's atmosphere, making up about 21% of the air we breathe.


Second most abundant element?

On planet earth, silicon is the second most abundant element. It comprised 28 percent of the earth's crust. The most abundant is oxygen, which makes up about 47 percent of the earth's crust. The second most abundant element in the universe is helium.


Is silicon abundant?

You should clarify, abundant where.In Earth's crust, it's the second most abundant element by mass (after oxygen).


What are two differences between gases and plasma?

Two are: plasma is affected by electrical and magnetical fields. the second one is that plasma


Is silicon the second most abundant element?

no