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Katarina [22]
2 years ago
5

Losses of usable energy between successive trophic levels in an ecosystem are best accounted for by _________

Biology
1 answer:
Vesnalui [34]2 years ago
5 0

Answer:

The 2nd law

Explanation:

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A single gene produces two different proteins, utilizing different exons. What is the most likely explanation?
Helen [10]

Answer:   Differences in mRNA splicing.

Explanation:

The exon is the region of a gene that is not separated during the cutting and splicing process and thus remains in the mature messenger RNA. In genes encoding a protein, it is the exons which contain the information to produce the protein encoded in the gene. In these cases, each exon encodes a specific portion of the complete protein, so that the set of exons forms the coding region of the gene. In eukaryotes, the exons of a gene are separated by long regions of DNA (called introns) which do not code.

RNA splicing is a post-transcriptional process of maturing RNA from which certain sequential fragments are removed. This process is very common in eukaryotes, and can occur in any type of RNA, although it is more common in mRNA. It consists of removing the introns from the primary transcript and then binding the exons. Particularly, <u>alternative RNA splicing takes place when one gene can produce different proteins as a result of what segments are considered as introns and exons</u>. When different segments are considered exons, the result is a great diversity of mature transcripts which produce different proteins.

<u>So, gene splicing is a post-transcriptional modification in which a gene can code for many proteins, which makes it an important source of protein diversity.</u>

6 0
1 year ago
What is one element a topographic map shows? 1.Elevation 2.Space 3.Temperature 4.Weather
m_a_m_a [10]
Elevation (it uses different colors to show the elevation of different places such as plains and mountains)
4 0
2 years ago
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Which structure on the sperm propels in toward the egg
AnnyKZ [126]

flagellum is the answer! Hope this helps!!!!!

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2 years ago
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Explain how the chemical structure of the carbon atom accounts for the differences between the male and female lions seen in the
True [87]

Answer:

in male lion, two methyl groups are present in its structure  while in female lion, two hydroxl groups are present in its structure

Explanation:

The chemical structure of the carbon atom is different in both male and female lion because both male and female lions have different sex harmones which are totally different from one another. In male lion, testosterone is a sex hormone whose chemical formula is C19H28O2 and two methyl groups and one hydroxl group are present in its structure while in female lion, oestradiol is a sex hormone having a chemical formula C18H24O2  and two hydroxyl groups are present.

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1 year ago
The development of the brain continues past childhood. For example, if a monkey pushes a lever with its finger several thousand
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Answer:

The development of the brain continues past childhood. For example, if a monkey pushes a lever with its finger several thousand times a day, the Brain tissue that controls the finger changes as a result of the experience.

4 0
2 years ago
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