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Nikolay
7 days ago
5

Why can the same trna and rrna molecules be used to synthesize a wide variety of polypeptides

Biology
1 answer:
-BARSIC- [720]7 days ago
8 0

Answer: Transcription and translation enable tRNA and rRNA molecules to produce a diverse range of polypeptides.

Explanation:

DNA comprises the genetic instructions for protein synthesis, and this data is transmitted to mRNA during transcription. This initial phase of gene expression entails copying a portion of DNA into RNA (mainly mRNA) facilitated by the enzyme RNA polymerase.

Both DNA and RNA are types of nucleic acids that utilize nucleotide base pairs as a complementary code. During transcription, an RNA polymerase reads a DNA sequence, generating a corresponding, antiparallel RNA strand termed a primary transcript.

A notable variation exists among genes, leading to numerous distinct mRNA molecules. However, ribosomes, made up of rRNA, play a crucial role during translation. This phase occurs in the cytoplasm or ER, where proteins are synthesized after the DNA-to-RNA transcription within the cell's nucleus. This entire process is recognized as gene expression.

Among the three forms of RNA, tRNA is the smallest, consisting of only 75 to 95 nucleotides, and functions to transport specific amino acids to the developing polypeptide chain. It can be concluded that mRNA enhances the variety of polypeptide structures by carrying essential information regarding their synthesis.

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A weight loss client is currently exercising 5+ hours a week and hits a plateau what adjustments should a trainer suggest?
vlada-n [749]

Answer: D. Reduce kcal en 250

Explicación: Una persona ha llegado a un estancamiento cuando no nota cambios significativos o experimenta estancamiento en su esfuerzo por alcanzar un objetivo. En el contexto del ejercicio y la pérdida de grasa, el cliente estaba haciendo más de 5 horas de ejercicio a la semana, al principio hubo cambios visibles, pero después de un tiempo, se dio cuenta de que no había cambios, esto indica un estancamiento, para combatir esto, considerando que el cliente desea perder peso, se recomienda disminuir la ingesta diaria de calorías en 250. Esto representa una reducción en la ingesta diaria de grasas, tras lo cual el cliente podrá evaluar si hay algún cambio notable.

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11 days ago
Each isotope has a special name derived from Latin (protium, deuterium, and tritium). What structural feature do these names ref
Tresset [654]

Isotopes of a given element share the same characteristics, differing only in the neutron count within the nucleus.

The atomic number remains unchanged, whereas the mass number varies.

In this particular instance, protium, deuterium, and tritium represent isotopes of hydrogen.

Protium is 1H, or Hydrogen-1, which has no neutrons.

Deuterium is 2H, or Hydrogen-2, containing one neutron.

Tritium is 3H, or Hydrogen-3, consisting of two neutrons.

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3 days ago
Create a sentence explaining how amino acids form proteins.
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In a protein, amino acids are interconnected through peptide bonds, which results in the formation of a lengthy chain. The bonding occurs via a biochemical reaction that eliminates a water molecule as it connects the amino group of one amino acid to the carboxyl group of another nearby amino acid.<span />
5 0
6 days ago
Read 2 more answers
You live in a city in Florida on the Gulf of Mexico and are trying to figure out why the water at the beaches turned bright gree
inysia [656]

Las algas azul-verdosas impactan el agua dulce y están directamente relacionadas con el escurrimiento agrícola y urbano.

Las fuertes lluvias de la primavera pasada probablemente causaron que el Lago Okeechobee liberara agua con algas azul-verdosas hacia ríos y canales. La espesa capa verde se deslizó sobre embarcaderos, represas y ríos, fluyendo a través de afluentes hacia el océano.

Las algas azul-verdosas (cianobacterias) son un tipo de microorganismos procariontes y autótrofos que cuentan con pigmentos fotosintéticos (clorofila y ficocianina), por lo que su ADN muestra que son bacterias.

Bacterias es la respuesta correcta.

5 0
6 days ago
The Lotka-Volterra model produces consistently identical cycles because it is deterministic. The lynx and hare simulation on the
-BARSIC- [720]

Answer:

B. Random and unforeseen occurrences take place in the real world, causing the Lotka-Volterra parameters to change with time.

Explanation:

Lotka-Volterra equations are mathematical representations that illustrate the interactions between predator and prey species, based on these assumptions:

  • The ecosystem is closed, with no migration events.
  • All individuals are considered reproductively similar.
  • In the absence of predators, prey populations exhibit exponential growth, thriving in optimal conditions.
  • If predators are absent, their population declines exponentially, limited by prey availability in an ideal environment.
  • The rate of predation correlates with the frequency of encounters, which is density-dependent.
  • Predators influence prey populations, leading to a decrease proportional to both predator and prey numbers.
  • Conversely, prey population also affects predator numbers based on encounter ratios.

In these equations, variable D denotes predator count, while P represents prey count.

The constants remain unchanged:

  • r1: prey growth rate.
  • a1: predator hunting efficiency.
  • r2: predator growth rate.
  • a2: predator success rate in feeding and hunting.

In nature, various factors influence interactions, including density-dependent and density-independent factors. Additionally, real-world situations are affected by stochastic elements. Stochasticity represents the variations in the system caused by elements that impact population growth. This variability may correlate with prosperous and challenging years.

During a real scenario, the full adherence to the assumptions is unlikely. The previously mentioned constants can fluctuate, leading to changing interactions between predator and prey populations. Different variations lead to different experiences for both species.

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