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Feliz [49]
3 years ago
8

Which of the following best explains why ecosystems need a continual influx of new energy?

Biology
1 answer:
Viktor [21]3 years ago
8 0
Energy flows through an ecosystem and cannot be recycled. 
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What is the role of mRNA in expressing specialized structures
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The messenger RNA is a single-stranded intermediate molecule that transfers the genetic information from DNA to the cytoplasm, which is used as a template to assemble the chain of amino acids that form a variety of polypeptides. Therefore, mRNA is the blueprint for protein synthesis, which is read according to the genetic code during gene expression.

 

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Describe the characteristics of a vertebrate. Include an example.
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They have a backbone, most use legs,wings,or fins for movement.

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Cytoskeletal elements play important roles in cell division. The mitotic spindle apparatus is made of ________ and pulls sister
Veseljchak [2.6K]

Answer:

Cytoskeletal elements play important roles in cell division. The mitotic spindle apparatus is made of "microtubules" and pulls sister chromatids apart, whereas the contractile ring is made of "actin filaments" and required for the separation of daughter cells at the end of the mitotic phase of the cell cycle.

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The three chief organizational apparatuses of the cytoskeleton are microtubules (formed by tubulins), microfilaments (formed by actins) and intermediate filaments. All three apparatuses cooperate with each other non-covalently. The cytoskeleton is composed of protein filaments and is found throughout the inside of a eukaryotic cell. The cytosol is the main component of the cytoplasm, the fluid that fills the inside of the cell. The cytoplasm is everything in the cell except for the cytoskeleton and membrane-bound organelles.

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During translation, the peptide bond formation is catalyzed by:.
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RNA (referred to as a ribozyme)

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Transcription begins at a promoter. What is a promoter? a. A site in DNA that recruits the RNA Polymeraseb. Part of the RNA mole
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