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alex41 [277]
3 years ago
8

Why are covalent bonds form when an electron is completely lost or gained from an atom

Biology
1 answer:
Andrei [34K]3 years ago
7 0

Answer:

Covalent bonds are the types of Bond which is formed by sharing of an electron between two atoms of same element or two different elements. The bond which is formed by the completely lost or gained of an atom is known as ionic bond.

Explanation:

The most common example of covalent bond is formed from carbon atom. The valence of carbon atom is 4. Therefore, it is very hard to gain or lose an electron from the carbon atom. Therefore, the carbon tends to share the electron instead of completely losing or gaining the electron.

Ionic bond is very common and it can be formed by many elements from the periodic table. Ionic bond is more stable and stronger when compared to the covalent bond in nature.  

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1._Mentions eukaryotic cells<br> 2._Mentions prokaryotic cells
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Answer:

Eukaryotic cells are cells that contain a nucleus and organelles, and are enclosed by a plasma membrane. Organisms that have eukaryotic cells include protozoa, fungi, plants and animals.

(google)

A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in the central part of the cell: a darkened region called the nucleoid (Figure 1).

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Explanation:

8 0
3 years ago
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A scientist conducted research and plotted his results in the histogram shown below. Which of the following is the best measure
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Answer:

<h2><u>Median</u></h2>

Explanation:

The <u><em>median </em></u>is the value separating the higher half from the lower half of a data sample. For a data set, it may be thought of as the "middle" value. For example, in the data set {1, 3, 3, 6, 7, 8, 9}, the median is 6, the fourth largest, and also the fourth smallest,

4 0
3 years ago
In comparison with the renal cortex, fluid in the proximal tubule is hyperosmotic.
ArbitrLikvidat [17]

The proximal tubule fluid is more hyperosmotic than the renal cortex, but this does not influence what is causing the acid-base disruption.

<h3>How does hyperosmotic work?</h3>

In the extracellular space, the first drop in temperature results in the formation of crystals, which creates a hyperosmotic environment that draws water out of the cells and causes them to contract. Organelles & biological membranes are damaged as a result of inner crystal formation as the temperature drops.

<h3>What transpires inside a hyperosmotic environment to a cell?</h3>

A cell submerged in a 10% dextrose hyperosmotic , osmotic pressure solution would initially lose area as water departs and then start gaining proportion as glucose is delivered through into cell as moisture follow by osmosis. This is because water crosses cell surfaces more quickly than solutes do.

To know more about Hyperosmotic visit:

brainly.com/question/28302809

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3 0
1 year ago
A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy tr
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Answer:

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Explanation:

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Therefore, the energy transformation taking place according to the question is option D.

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