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Black_prince [1.1K]
3 years ago
14

HELP Does anyone know this?

Biology
1 answer:
castortr0y [4]3 years ago
5 0
You got it right! Main sequence stars are stable, for example Our Sun.
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I think it’s sperm for your question
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When acetylcholine binds to receptors at the motor end plate, the end plate membrane becames:__________a. repolarized. b. more p
sladkih [1.3K]

Answer:

d. more permeable to sodium ions.

Explanation:

The binding of Acetylcholine  with the receptors at  motor end plate facilitate   membrane permeability to sodium ions therefore  opening of voltage gated channels for sodium ions.

Sodium ions diffused into the synapse of post synaptic neuron at the neuromuscular junction.

If  the  stimulus is up to threshold levels; more chemical(neurotransmitter) gated sodium channels opens, and sodium ions move into the  synapse to depolarize the membrane with  reversal of charges to generate action potential.

The continuous  binding of Acetycholine , leads to permanent opening of sodium ions,and over excitation from depolarization.  Acetycholinesterase enzymes breakdown Acetycholine to choline  and Acetyl Co -A. These are recycle back to Acetycholiine

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3 years ago
1) A specialized function shared by the many cells lining the lungs and the lumen of the gut isA) decreased oxygen demand due to
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Answer:

B) increased exchange surface provided by their membranes

Explanation:

Alveoli are tiny air sacs that are responsible for exchanging oxygen (O2) and carbon dioxide (CO2) in the lungs. Alveoli have elastic fibers in order to expand and recoil depending on the volume of air breathed in. The alveolar epithelial cells (pneumocytes) may adopt a shape that serves to increase the surface area of gas exchange. On the other hand, intestinal epithelial cells have microvilli, which are microscopic projections in the plasma membrane. Microvilli serve to increase the cell's surface area, thereby facilitating the absorption of nutrients and water.

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Although in humans there are 22 pairs of autosomal chromosomes, only three different chromosomal trisomies are commonly seen in
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My small (25 lbs) dachshund dog somehow got a hold of 9 glazed donuts he ate them ALL. Is he going to die? Be real with me.
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I'm pretty sure the dog will be okay, next time maybe hide the donuts :0

the dog may get sick but I don't think they'll die

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the dog may get sick but I'm pretty sure they wont die

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