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sdas [7]
3 years ago
15

What is a covalent bond

Biology
2 answers:
Klio2033 [76]3 years ago
8 0

Covalent bond is a s bond in which the electrons are shared between each other.

Answer: Option D

<u>Explanation:</u>

The elements when they form molecules, they satisfy their valence needs and form certain bonds that make them stable. The presence of 8 electrons in the outer most orbital of an element makes the element stable.

Thereby to balance this need the elements either transfer the electrons between each other, gain electrons or share electrons in case of which  formation of a covalent bond happens.

Verdich [7]3 years ago
6 0
Answer: A bond in which electrons are shared.
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People with lighter skin tones are mostly from Europe. What evolutionary advantage did light skin offer?
igomit [66]
<h2>c) option is correct</h2>

Explanation:

Melanin causes skin pigmentation, lowers the skin's ability to make vitamin D in response to sunlight exposure and some studies show that older adults with darker skin are at high risk of vitamin D deficiency

If there is lighter skin tones of people, it implies that the amount of Vitamin D is more in those people and skin of those people have the ability to process vitamin D from the sun

4 0
3 years ago
Sustancia formada por ADN y proteínas histonas que integra los cromosomas
Sauron [17]

Answer:

La cromatina

Explanation:

La cromatina es una sustancia dentro de un cromosoma que consta de ADN y proteína. El ADN lleva las instrucciones genéticas de la célula. Las principales proteínas de la cromatina son las histonas, que ayudan a empaquetar el ADN en una forma compacta que encaja en el núcleo celular.

La cromatina es un complejo altamente organizado de ADN y proteínas y es un componente principal del núcleo celular. Las proteínas histonas ayudan a organizar el ADN en unidades estructurales llamadas nucleosomas, que luego se ensamblan en una estructura compacta (cromatina) y, finalmente, en estructuras muy grandes de orden superior (cromosomas).

8 0
3 years ago
Test your understanding by predicting how the sodium-potassium pump becomes integrated into the outer cell membrane. Find the st
Mama L [17]

By predicting how the sodium-potassium pump becomes integrated into outer cell membrane. The prediction that is false is the mRNA coding into sodium pump is translated into the pump on two ribosomes.

<h3>What is sodium-potassium pump?</h3>

The sodium-potassium pump is an enzyme (an electrogenic transmembrane ATPase) present in the membrane of all animal cells. It is also known as sodium-potassium adenosine triphosphatase, Na+/K+-ATPase, or sodium-potassium ATPase. It serves a number of purposes in cell physiology.

The enzyme Na+/K+-ATPase is activated (i.e. it uses energy from ATP). Three sodium ions are exported and two potassium ions are imported for each ATP molecule used by the pump. As a result, each pump cycle results in the net export of one positive charge.

There are four distinct sodium pump isoforms or subtypes in mammals. Each has distinct qualities and patterns of tissue expression. The P-type ATPase family includes this enzyme.

To know more about enzyme visit: brainly.com/question/14953274

#SPJ4

7 0
1 year ago
Read 2 more answers
Which of the following statements are true? Check all that apply. All things are made of molecules. All things are made of atoms
UNO [17]

Answer:

all things are made of atoms

Explanation:

atoms are the building blocks of life you are made of atoms.

8 0
3 years ago
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6. The thin delicate membrane just attached to the cytoplasm is: [MOE 2061] (a) Ectoplasm (b) Endoplasm (c) Tonoplast (d) Protop
Westkost [7]

Answer:

cell membrane

Explanation:

4 0
3 years ago
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