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Daniel [21]
3 years ago
9

Messenger RNA: is found only in the cytoplasm. is the most abundant form of RNA. in all cells is initially formed as a large pre

cursor molecule called heterogeneous nuclear RNA. is the type of RNA that turns over most quickly in the cell. in eukaryotes has a 5' cap added during posttranscriptional modification.
Biology
1 answer:
eimsori [14]3 years ago
3 0
<h2>Messenger RNA</h2>

Explanation:

  • Messenger RNA (mRNA) is a solitary stranded RNA atom that relates to the hereditary arrangement of a quality and is read  by the ribosome during the time spent creating a protein
  • The three most significant strides of pre-mRNA processing are the expansion of settling and <em>signaling factors at the 5′ and 3′  ends of the molecule,</em> and the expulsion of mediating arrangements that don't indicate the <em>proper amino acids. </em>the mRNA <em>transcript can be “edited”</em>  after it is transcribed.
  • During transcription the RNA polymerase read the layout DNA strand the <em>3′→5′ way, however the mRNA is shaped in the 5′ to 3′  direction. </em>
  • The essential capacity of mRNA is to go about as a intermediary between the <em>hereditary data in DNA</em> and the amino acid sequence of proteins.
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What information can a scientist learn directly from a single fossil? A. The organism's shape and size B. The life expectancy of
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C. How the organism is related to others

Explanation:

From a single fossil, a scientist can learn how the organism is related to others. Fossils are the preserved remains of organisms that are usually found in rocks.

  • Organisms must posses certain characteristics to ensure their preservation as fossils.
  • Most organisms that are preserved usually have hard parts.
  • Some climatic influence can also arrest decay and provide a platform organisms to be preserved wholly.
  • Fossils are used for relative dating of events in nature.
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3 0
3 years ago
Calculate the percentage ionization in these amino acid side chains at the ph values specified:
Margarita [4]

The <u>Henderson-Hasselbalch equation</u> and pKa can be used to determine the % ionization if it is assumed that the amino and carboxyl groups are not preventing ionization.

  1. aspartate at ph 5.4 = 98.3%
  2. glutamate at ph 11.8 = 100%
  3. histidine at ph 8.0 = 99%

Henderson-Hasselbalch equation- Henderson-Hasselbalch Equation to determine the pH of a solution. Knowing the pH of a solution is particularly significant for many chemical processes as well as for biological systems. The estimated pH value of a buffer solution may be determined using the Henderson-Hasselbalch equation.

pH- A solution's acidity or alkalinity may be determined based on the concentration of hydrogen ions in the solution, or pH. Typically, the pH scale runs from 0 to 14.

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7 0
2 years ago
In the year 100, Ptolemy introduced the geocentric model of the solar system. By the year 1542,
Alecsey [184]

Answer: Ptolemaic system, also called geocentric system or geocentric model, mathematical model of the universe formulated by the Alexandrian astronomer and mathematician Ptolemy about 150 CE and recorded by him in his Almagest and Planetary Hypotheses. The Ptolemaic system is a geocentric cosmology; that is, it starts by assuming that Earth is stationary and at the centre of the universe. The “natural” expectation for ancient societies was that the heavenly bodies (Sun, Moon, planets, and stars) must travel in uniform motion along the most “perfect” path possible, a circle. However, the paths of the Sun, Moon, and planets as observed from Earth are not circular. Ptolemy’s model explained this “imperfection” by postulating that the apparently irregular movements were a combination of several regular circular motions seen in perspective from a stationary Earth.

Explanation:

i hope this help

8 0
3 years ago
What is the importance of crossing-over?
nikklg [1K]

Answer:

b.It increases the likelihood that daughter cells contain different genetic material.

Explanation:

Morgan and Cattell for the first time used the term ‘crossing over’.  Crossing over takes place during prophase I of meiosis. During crossing over, chromosome segments of non-sister chromatids of homologous chromosomes get exchanged. As a result, the daughter cells acquire different genetic materials. Thus, it provides genetic variation by creating a new combination of genes or get recombination and produces hybrids.

3 0
3 years ago
A technique that uses measurement of radioactive isotopes to evaluate the activity of the brain is
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<span>The answer is nuclear imaging. A subject is asked to take in a radionuclide (radioactive isotopes) and as the radioactive material passes though the body, it continually emits radiation that is detectable by an instrument such as a gamma camera. Examples of nuclear imaging techniques are SPECT and PET.</span>




7 0
3 years ago
Read 2 more answers
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