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victus00 [196]
2 years ago
11

In which direction are nearly all galaxies moving relative to Earth?

Biology
1 answer:
mrs_skeptik [129]2 years ago
6 0

Edwin Hubble discovered that most of the galaxies are moving away from us and away from each other. Hubble also discovered that there is a relationship between the distance to a galaxy and its speed. Hubble's law states that the farther away a galaxy is, the faster it is moving away from us.

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no

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How does water enable substances to pass through a cell membrane? How does water enable substances to pass through a cell membra
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Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

Source:

https://www2.estrellamountain.edu/faculty/farabee/biobk/biobooktransp.html#:~:text=Water%2C%20carbon%20dioxide%2C%20and%20oxygen,to%20cross%20the%20cell%20membrane.

Hope this helps!

4 0
1 year ago
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meriva
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6 0
3 years ago
17. Which of the following statements are accurate?
Naddik [55]

Answer:

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

Explanation:

Answer:

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

Explanation:

Neurotransmitter are chemicals that transfer signals between neurons and nerve cells. They control some physical and physiologocal activity such as appetite, food.

Acetycoline is an example of neurotransmitter and it is located in the parasympathetic nervous system. Ligand are substance that form complexes with biomolecule. They serve biological purpose with this biomolecule.

This ligand binds to target site. Neurotransmitter act as ligand by binding to receptor in the postsynaptic neuron and acetycoline a type of neurotransmitter can also serve as ligand they bind to acetycoline receptor on cell surface.

5 0
3 years ago
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