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What else can I help you with?
What structure controls the passage of substances into and out of the cell?
cell membrane
How do chemicals come to your brain?
Chemicals enter the brain by passing through the blood-brain barrier, a selective barrier that controls which substances can enter the brain. Once in the bloodstream, chemicals can be transported across this barrier either by being small enough to pass through or by using specific transport mechanisms. Once inside the brain, chemicals can affect neuronal activity and neurotransmitter release, influencing brain function.
What is the function of cell membrane in a cell?
The function of the cell membrane is not just something that simply controls something. It is more like a barrier that only allows certain molecules inside through certain means. Its through the phospholipid bilayer that smaller molecules which are non-polar can pass through (since the lipid tail are hydrophobic). Other molecules especially the ones that are too big like waste and large sugar compounds must go through carrier proteins, or more technical, transmembrane proteins. It is through either facilitate (passive) transport and active transport that these molecules are allowed to pass through. In short it acts like a bouncer, letting only certain things in. But this analogy is very shallow.
Why is the plasma membrane called the selectively permeable membrane?
Let trans-membrane transport of molecules be either passive, or facilitated, or active: the plasma [bi-lipid layer] membrane has the power to exclude molecules It selects from passage through the Membrane into the Cell's interior.
Why are acids so powerful?
Because of their action upon other materials. An acids molecules have a tendancy to either disolve or mix with other molecules.
What structure controls the passage of substances into and out of the cell?
cell membrane
What is factual passage?
A factual passage is a passage which has facts in it either you have to write a factual passage or use it as comprehension
Which kind of molecules is controlled by osmosis?
Osmosis primarily controls the movement of water molecules across a semi-permeable membrane. It helps maintain water balance in cells by allowing water to move in or out of the cell to equalize the concentration of solutes on either side of the membrane.
Can be either small molecules or large molecules.?
carbohydrates
What controls which substances go in and out of cells?
Molecules in the cell membrane (plasma membrane) control which substances move or out of a cell.Phospholipids form a barrier to most compounds. To move through the phospholipid bilayer, molecules must be small and uncharged; examples are water, dissolved oxygen, and carbon dioxide. These move through the bilayer by diffusion(osmosis in the case of water).Other compounds must pass through proteins embedded in the phospholipid bilayer.Channel proteins allow the passage of molecules that are small enough and are not repelled by any charge around the pore (channel) of the protein. The movement of substances through channel proteins is called facilitated diffusion, being facilitated by the protein.Carrier proteins are highly selective, and move substances either by facilitated diffusion or by active transport, which requires energy. This energy may be supplied by the hydrolysis of ATP.
How do chemicals come to your brain?
Chemicals enter the brain by passing through the blood-brain barrier, a selective barrier that controls which substances can enter the brain. Once in the bloodstream, chemicals can be transported across this barrier either by being small enough to pass through or by using specific transport mechanisms. Once inside the brain, chemicals can affect neuronal activity and neurotransmitter release, influencing brain function.
Is the passage of light through an object?
The passage of light through an object refers to the phenomenon where light travels through the material of the object, either allowing it to pass through (transparency), be partially absorbed or reflected (translucency), or prevent it from passing through (opacity). The interaction of light with the atoms and molecules of the object determines its optical properties.
What is the function of cell membrane in a cell?
The function of the cell membrane is not just something that simply controls something. It is more like a barrier that only allows certain molecules inside through certain means. Its through the phospholipid bilayer that smaller molecules which are non-polar can pass through (since the lipid tail are hydrophobic). Other molecules especially the ones that are too big like waste and large sugar compounds must go through carrier proteins, or more technical, transmembrane proteins. It is through either facilitate (passive) transport and active transport that these molecules are allowed to pass through. In short it acts like a bouncer, letting only certain things in. But this analogy is very shallow.
What controls the chemical reactions in the body?
I think its either proteins or enzymes
What are located on either side of the uterus and serve as a passage way to the uterus?
Fallopian tubes are located on either side of the uterus.
When one party controls the presidency, and another party controls either one or both houses of Congress, the United States has a ______ government?
divided
What is a regulatory molecule?
A regulatory molecule is a molecule that controls the activity of proteins or enzymes by affecting their function. These molecules can either enhance or inhibit the activity of the protein or enzyme, thus regulating various biological processes within the cell. Examples of regulatory molecules include hormones, neurotransmitters, and allosteric regulators.
