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Arisa [49]
3 years ago
11

Explain the biological significance of mitosis

Biology
2 answers:
erastovalidia [21]3 years ago
8 0
It is important for asexual cellular reproduction so that an organism can heal a wound, grow larger systems such as organs, and replace sick or dead cells.
MArishka [77]3 years ago
6 0
Mitosis is important for a number of reasons. It's a form of reproduction for some organisms that reproduce asexually, it's needed for growth and development, and also for the repair and replacement of cells. If we didn't do mitosis dead cells wouldn't be replaced, and that would cause some massive problems. For example, if we weren't capable of doing mitosis and you cut your hand, the cut wouldn't heal up because the cells wouldn't be getting replaced. 
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Introns in pre-mRNA: a. protect pre-mRNA from enzyme degradation. b. move within the mRNA, giving rise to new exon combinations.
suter [353]

Answer: c. are spliced out of the message.

Explanation: Intron are non-coding portion of the DNA sequence. They do not code for any specific amino acid and are spliced or removed before splicing.

Exons are DNA sequence that code for specific amino acid they are usually left after introns are removed and are joined together before translation into amino acid sequence. Intron splicing can lead to splicing some exons which can lead to formation of an entirely new amino acid or protein.

Spliceosome are enzymes for splicing introns.

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3 years ago
Texto donde se desarrolle la definicion de seleccion natural. Además, empleem los siguientes terminos: Variabilidad, mecanismo s
SOVA2 [1]

Answer:

la selección natural es el mecanismo principal por el cual la evolución ocurre

Explanation:

Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.

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3 years ago
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4 0
3 years ago
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Why is homeostasis particularly more important to unicellular organisms than multicellular organisms?
ElenaW [278]
Multicellular organisms do this by assigning specific roles to specific cells. This enables various cells within a larger organism to collaborate in order to preserve homeostasis. Since they are made up of just ONE type of cell, unicellular organisms do not need cell specialization to maintain homeostasis.
3 0
3 years ago
Howard is constructing a model of the tree of life. Which strategy would most likely ensure that all of Earth's organisms are re
scZoUnD [109]

Answer:

The answer is A. Draw branches for the domains: Bacteria, Archaea and Eukarya

Explanation:

Three Domains of Life:

Bacteria, Archaea and eukarya are the three principal branches or domains of the tree of life that explains the evolutionary relationship between all living organisms.

The first two domains, bacteria and archaea comprise the prokaryotic unicellular organisms. The third domain, eukarya includes all eukaryotic organisms.

All other organisms have evolved from these three principal domains.

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3 years ago
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