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Feliz [49]
3 years ago
12

Write a procedure for an experiment that tests how a paper airplane's shape affects the distance it will fly. Then, describe how

you might use both imagination and logical reasoning to increase your chances of discovering an airplane shape that will fly at least halfway across the classroom.
Biology
1 answer:
nlexa [21]3 years ago
7 0

Answer:Plz help me

Explanation:

Plz help me

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3.The reduced potential causes hundreds of a)________________________ channels to open on that part of the cell membrane. The de
wlad13 [49]

The reduced potential causes hundreds of <u>voltage-gated sodium</u> channels  to open on that part of the cell membrane. The depolarization of the cell causes more of <u>voltage-gated sodium </u>channels to open in adjacent parts of the cell membrane. This begins the wave of of <u>depolarization</u>  moving down the axon. Depolarization begins at the <u>axon hillock.</u>

Explanation:

When there is no neuron signaling it becomes polarized, termed as resting membrane potential (RMP) at a threshold voltage (around -55 mV), due to the action of the sodium-potassium pump and the potassium leak channels.  

When a change in the RMP occurs, depolarization takes place which causes the voltage-gated sodium channels to open and sodium ions rush into the nerve cell which in turn will increase the voltage threshold to nearly around +40 mV and also charges the neuron positive. This depolarization moves down the axon. This increase in threshold stops the sodium influx and opens the potassium channels to rush the potassium out of the cell.

All these actions decrease the membrane potential leading to a wave of depolarization and going back to resting state. Depolarization begins depending upon the potential gradient at the axon hillock.

8 0
3 years ago
You made a "cell" using dialysis tubing and a concentrated sugar solution tinted red. You then placed the cell in distilled wate
Mrrafil [7]

Answer:

When the cell has 0% sucrose I expect the cell to stay the same.

Explanation:

First of all, this question should not be confused for the statement "When the "cell" has 0% sucrose, did you expect the cell to have gained water, lost water, or stay the same. In this case, the correct answer would have been; gained water.

But, in this question, we are asked what happens to the cells at 0% sucrose concentration. At 0% (no solute) concentration, there is no net movement of water or solute into or out of the cell, because the cell is isotonic to the external environment (distilled water). Osmosis, a special kind of diffusion, is the movement of water, from areas of lower solute concentration to area of higher solute concentration, or from areas of higher water concentration to areas of lower water concentration through a semi-permeable membrane. If the water moves into the cells (hypertonic cells), then the cell gains water and increases in size, but if the cell loses water (hypotonic cell), then it reduces in size

4 0
3 years ago
What process happens in endoplasmic reticulum
faust18 [17]
It produces proteins for the cell to function
4 0
3 years ago
Read 2 more answers
During glycolysis, what is the overall gain of ATP per glucose molecule?
mel-nik [20]
The overall gain is 2
5 0
3 years ago
Read 2 more answers
-. What are the 6 phases of The Cell Cycle?
julsineya [31]

Answer:

Explanation:

interphase

prophase

metaphase

anaphase

telophase

6 0
3 years ago
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