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m_a_m_a [10]
2 years ago
5

Cuales son las estructuras fundamentales en toda celula?

Biology
1 answer:
Kamila [148]2 years ago
6 0

Answer:

Una célula consta de tres partes: la membrana celular, el núcleo y, entre las dos, el citoplasma.

Explanation:

Usado traducir, no hablo ni escribo bien el español, pero puedo leer.

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Which types of mutations in the lac operon stop Escherichia coli from utilizing lactose as a carbon source? a) promoter deletion
Sladkaya [172]

Answer:

D.) repressor DNA-binding site mutation

Explanation:

lacl prevents the repressor polypeptide is a mutant that prevent operon from binding lactose, and thus will bind to the operator and be non-inducible.. This mutant will represses the lac operon whether lactose is present or not and the lac operon will not be expressed. It is also called“super-supperesor".

The lacI locus – One type of mutant allele of lacI (callled I-) prevents the production of a repressor polypeptide or produces a polypeptide that will not allow to bind to the operator sequence.

This is also a constitutive expresser of the lac operon because absence of repressor binding permits transcription.

7 0
3 years ago
) consider the trait of courage. describe the advantages and limitations of obtaining informant report data for this trait.
mariarad [96]
The advantages and limitations of obtaining informant report data for the courage trait are;
Advantages include; 
Large amount of information
Definitional truth based on the observed acts of courage.
Limitations on the other hand include; 
Very little behavioral data,
Error; much more likely to remember acts of courage than non-courageous acts.

8 0
3 years ago
Precipitation of a substance occurs when:
Eva8 [605]

Answer:

In solids, precipitation occurs if the concentration of one solid is above the solubility limit in the host solid, due to rapid quenching or ion implantation, and the temperature is high enough that diffusion can lead to segregation into precipitates.

Explanation:

6 0
3 years ago
Which process helps gas exchange to occur?
romanna [79]
The answer is a because I think so
6 0
3 years ago
Read 2 more answers
Eted
balandron [24]
The correct answer is B
6 0
3 years ago
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