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Sveta_85 [38]
3 years ago
5

Why do all cells need DNA?

Biology
2 answers:
Viktor [21]3 years ago
4 0
<span>So that the cells can function correctly. </span>
lubasha [3.4K]3 years ago
3 0
Not every cell contains DNA ,mature red blood cells and other cells do not have a nucleus
You might be interested in
Which of the following statements about transposable genetic elements is NOT true?
Katarina [22]

Answer:

C. They all use a cut and paste mechanism.

Explanation:

DNA transposons can go through a replicative or nonreplicative transposition.

The replicative transposition uses a "copy and paste" mechanism that consists of the introduction of a new copy of the transposable element in a new position, meanwhile <u>the old copy remains in the original position</u>. This determines an increase in the number of copies.

The nonreplicative transposition uses a "cut and paste" mechanism that consists of the cleavage of the transposable element from its position and its <u>insertion in a new position</u> without increasing the number of copies.

Retrotransposons, on the other side, move through RNA intermediates generated by the reverse transcriptase.

5 0
2 years ago
Mutations are important to the evolution of a species because
patriot [66]

Answer:

Mutations are important to the evolution of a species because is creates new DNA for a certain gene, creating a new allele.

(Answer taken from https://www.apsnet.org/edcenter/disimpactmngmnt/topc/PopGenetics/Pages/Mutation.aspx#targetText=Mutation%20plays%20an%20important%20role,gene%2C%20creating%20a%20new%20allele.)

Hope this helps :)

3 0
3 years ago
It takes approximately _____ action· potentials from olfactory receptors for us to perceive· an odor· .
taurus [48]
Action potentials (i.e. nerve impulses) occur in several types of animal cells<span>, called </span>excitable cells<span>, which include </span>neurons<span>, </span>muscle cells<span>, </span>endocrine<span> cells, and in some </span>plant cells<span>. </span><span>It takes around 40 action potentials for a smell sensation to be reported.</span>
3 0
3 years ago
If a robin builds a nest in a big tree, the robin benefits and the tree is not helped or harmed. This type of symbiotic relation
Lynna [10]
tree and nest
If a robin builds a nest in a big tree, the robin benefits and the tree is not helped or harmed. This type of symbiotic relationship is called commensalism, and it is between the tree and the nest/Robin.

<span>There are several types of biotic relationships that is occurring every single moment in the ecosystem and commensalism is one. In contrast, parasitism is the biotic relationship where one organism doesn't benefit from the other and is harmed. In this scenario with human beings and mosquitos, this phenomenon of interaction is distinguished as parasitism where mosquitos draws blood that contains nutrients from the human tissue to use it as its source of food and then leaves harmful substances and bacteria in the human’s blood stream.<span> </span></span>


7 0
3 years ago
Put the fats in order from the one that contains the greatest percentage of saturated fatty acids (1) to the one that contains t
olganol [36]

Answer:coconut oil, butter, palm oil, olive oil, canola oil.

Explanation: .

A saturated fat one whose fatty acid chains have all or predominantly single bonds. A fat is made of two kinds of smaller molecules which are glycerol and fatty acids. Fats are made of long chains of carbon (C) atoms while some carbon atoms are linked by single bonds (-C-C-) bonds others are linked by double bonds (-C=C-). These Double bonds will react with hydrogen to form single bonds causing them to be SATURATED, because when the second bond is broken, each half of the bond is then saturated with a hydrogen atom.

In terms of saturated fats acids composition by percentage according to ChartsBin statistics collector team 2011, Fat Composition in different Cooking Oils, ChartsBin.com, palm oil is 14.192, coconut oil is 91.92 canola is 7.46,palm oil 51.57, butter 65%-68%.Here you can see that the order of saturated fats from the highest gives- Coconut,butter, palm oil,olive oil and Canola as the last

6 0
2 years ago
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