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qaws [65]
2 years ago
14

Millions of people

Biology
1 answer:
svet-max [94.6K]2 years ago
7 0

Answer:

5 is the best conclusion draw for Africa

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Why is a cap added to mRNA, but not to tRNA or rRNA? Transfer RNA and rRNA exhibit complex structures with double stranded regio
DaniilM [7]

Answer:

The 5' cap is added to the mRNA as a means of protection from being degraded by enzymes in the cellular environment. Additionally. it helps with binding to the ribosome and subsequently translating it into a protein.

Explanation:

Moreover, it's only Polymerase II that has the ability to add the 5' cap and rRNA & tRNA are not transcribed by Polymerase II, only the mRNA is.

rRNA and tRNA have stable 3-Dimensional structures that protects it from being degraded by enzymes.

Hope that answers the question, have a great day!

5 0
3 years ago
If the genetically transformed cells have acquired the ability to live in the presence of the antibiotic ampicillin, then what m
V125BC [204]

Answer:

The plasmid must express a gene for ampicillin resistance (the protein product of  the <em>bla</em> gene codes for beta-lactamase, the protein that breaks down ampicillin). The colonies on the ampicillin plate are antibiotic resistant. This means that they have taken up the transformed plasmids expressing both the <em>bla</em> gene and the GFP gene.

Explanation:

The transformation involved the genetic modification of a plasmid to incorporate the gene encoding the green fluorescent protein (GFP) from jelly fish. GFP makes cells glow under UV light.

In genetic engineering, scientists use antibiotic resistance as markers to indicate cells that have been transformed. By incorporating an antibiotic resistance gene such as <em>bla</em> into the vector (plasmid) and then growing the cells in antibiotic media, scientists determine which colonies have taken up the plasmid. Therefore, if the cells survive, this means that they contain the plasmid with antibiotic resistance gene as well as the GFP gene.

5 0
3 years ago
What have you learned about radioactive dating? Check all that apply.
Ksivusya [100]

A, B, and D


I hope this helps!

3 0
3 years ago
What type of force caused the folds shown in the above cross section
valkas [14]
The folds in the photograph above were caused by compression at a thrust fault or a convergent plate boundary. Compression usually occurs where two tectonic plates converge or collide. The compression will cause rocks to fold upwards and this upward folding over time can lead to the formation of extensive fold mountains. Examples of fold mountains include the Alps, Andes, and the Himalayas.  
7 0
3 years ago
In an ocean ecosystem, which is necessary to begin a food web?
vagabundo [1.1K]
I believe that phytoplankton is necessary to begin a food web
4 0
3 years ago
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