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Afina-wow [57]
3 years ago
7

What apparatus did Priestly use to reach

Biology
1 answer:
stich3 [128]3 years ago
6 0

Answer:

The answer is B. Bell Jar

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PLSSS HELP IF YOU TURLY KNOW THISSS
Ymorist [56]

Answer:

B. Organic Matter

Organic matter is what differentiate a mineral from a rock.

4 0
3 years ago
Why does the element carbon create such different minerals as diamond and graphite ?
Ipatiy [6.2K]
Carbon has four available binding sites and depending on how one atom binds to other atoms, it can form different structures. If you look up the structure of diamond and graphite, you’ll see that they are all made out of carbon but they are arranged differently.
4 0
3 years ago
Your Mom is growing zinnias in her garden. Zinnias are grown all across the southern part of the US and come in many sizes and
Phoenix [80]

Answer:

some could have gotten more shade or sun depending on where they were placed ,or some could have had trouble growing,plus some may have gotten more rain , it all really depends on where the plants are placed

5 0
3 years ago
A. never
ludmilkaskok [199]
I would assume that it would be A
5 0
3 years ago
Once a neuron is stimulated and the membrane potential is depolarized, the depolarized axonal membrane is helped to return to it
Vadim26 [7]

Answer:

Explanation:

The cell membrane separates the cell from the outer environment. The extracellular fluid contains the sodium ions (Na+), chloride ions (Cl-), while intracellular fluid contains potassium (K +) and negative anions.

The potential difference arises when the membrane is selectively permeable to some ions. The resting potential is -70mV.  

When the neurons get excited, the sodium ions start to enter by sodium channels.  

Now there are more positive ions inside the cell membrane. It disturbs the resting potential i.e. -70mV. This stage is known as depolarization.

When the inside environment of the cell is more positively charged, the potassium ions start to move out of the cell. It goes out by the voltage-gated channels. Thus resting stage is maintained and it is known as repolarization.

But the initial stability of the cell membrane has to be maintained. To restore the resting stage, the sodium ions start to move out of the membrane and potassium ions enter into the cells again. This is an active transport and has done by the Na+ - K+ pump. Here 3 sodium ions move out and 2  potassium ions pumped into the cell through the plasma membrane.  

Thus the resting potential regains. The potassium ions come back into the cells against the concentration gradient and ATP provides the energy for this phenomena.

4 0
3 years ago
Read 2 more answers
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