1. Which aspects of soil do you think are easiest to change? Which are more difficult

1 answer:

7 0

Difficult to change - nutrients! crops won’t grow on soil that has had all of the nutrients used up. example: after growing corn in the same place for 50 years, corn will not grow anymore because all of the nutrients it needs to grow will no longer be in the soil

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The blank revolves around earth as a natural satellite

cupoosta [38]

The moon revolves around the Earth as a natural satellite.

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3 years ago

Is this correct?.....

Stolb23 [73]

Answer:

yes it is :) I hope this helps:)

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_The endplate potential (EPP) at the frog neuromuscular junction occurs because ACh simultaneously increases the conductance of

Hoochie [10]

Complete question:

The endplate potential (EPP) at the frog neuromuscular junction occurs because ACh simultaneously increases the conductance of the postsynaptic membrane to Na and K

True
False

Answer:

TRUE

Explanation:

The Acetylcholine neurotransmitter is released from the presynaptic cell by the process of exocytosis.

Once the molecule is in the intercellular space, it moves forward the postsynaptic membrane to join its receptor in the motor plate.

Once the joining has occurred, the receptor acquires a channel shape allowing the ion transference that will make possible the modification of the action potential. Ions traffic will consist of the pass of sodium and calcium to the interior of the cell and potassium to the exterior. Quantitatively, the interchange Na-K is the most significant.

K+ follows a concentration gradient, while Na+ follows an electrochemical gradient. The interchange results in an increase of positive charges in the interior of the muscular cell.

Whenever there is a sufficient number of Acetylcholine receptors are active, the depolarization threshold of the motor endplate is exceeded. This activates an action potential that extends to the rest of the muscle membrane.

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2 years ago

Classify each description as being a characteristic of microtubules, intermediate filaments, or actin filaments.

AlekseyPX

I found the exercise on the internet and attached are the descriptions.

Actin filaments:
-"play a role in cleavage furrow formation during cell division"
-"function in muscle contraction"

Microtubles:
-"make up the core of cilia and flagella"
-"are composed of tubulin subunits
-"maintain cell shape by resisting compression"

Intermediate filaments:
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Nataly [62]

Carbon Dioxide (CO2) and Water (H2O)

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