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SIZIF [17.4K]
2 years ago
6

Only _______ cells have a cell wall instead of a cell membrane

Biology
1 answer:
EleoNora [17]2 years ago
4 0
Only plant cells have a cell wall
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What researches are considered basic science
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pure research or fundamental research which is a type of reach with the idea of improving scientific theories. :)

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The ocean absorbs carbon dioxide directly from the atmosphere. How does CO2 absorption affect the ocean?
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Ocean plants absorb co2 just like trees do. Any co2 that’s not fixed will mess up the chemistry of the waters
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What do scientist do if there hoptestisis is wrong?
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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
Plagiarism Global plagiarism Incremental plagiarism Patchwork plagiarism A. using bits and pieces of other sources and passing i
nikklg [1K]

Explanation:

1. Using bits and pieces of other sources and passing it off as one’s own work

Patchwork plagiarism

In patchwork plagiarism, an author uses bits from other people's works and pass it off as their own.

2. Passing off another person’s work as one’s own

Plagiarism

The act of passing off another person's work as one's own is called plagiarism. It is a very serious offence

3. Passing off the entire work of another person as one’s own

Global plagiarism

Global plagiarism is the complete passing off of another person's own.

4. When most of the work is one’s own, but uncited sources are used

Incremental plagiarism

Here an author fails to cite the sources where he/she obtains information from.

Learn more:

Plagiarism brainly.com/question/2623994

#learnwithBrainly

7 0
4 years ago
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