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andrey2020 [161]
3 years ago
14

Why is it that although single myosin molecules have a polarity, the myosin in thick filaments is

Biology
1 answer:
aliya0001 [1]3 years ago
5 0
Polarity of a molecule does not involve the symmetry of the molecule rather it deals on with the presence of net charges and partial charges. It would be due to the partial charges present in the <span>single myosin molecules that causes its polarity. Hope this helps. Have a nice day.</span>
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to understand the levels of biological organization, match each of the labels with the correct illustration. Place your cursor o
rewona [7]

Answer:

organelle- part of a cell (example- mitochondrion)

cell- basic unit of structure  (example- muscle cell)

tissue- group of some cells  (example-muscle tissue )

organ- one or more types of tissue (example- stomach)

organ system- group of organs working together (example- digestive system )

Organism- individual living thing (example- goat )

Explanation:

Organization of living things! Hope this helps.

8 0
4 years ago
DNA is made up of two chains of nucleotides.<br><br> True<br><br> False
maw [93]
The answer is True

Explanation:

A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits.
8 0
3 years ago
Fax about blue eyes i don't mind two BRAINLES​
Olegator [25]

Answer:

People with blue eyes tend to have greater light sensitivity. Night vision is often better among people with blue eyes. A genetic mutation is responsible for blue eyes. People with blue eyes are more likely to have red eye in photos.

7 0
3 years ago
Read 2 more answers
Sickle cell disease provides an example for which principle of molecular genetics?
Alisiya [41]

Answer:

The correct answer is D a change to one amino acid in a protein may cause a significant change in the phenotype.

Explanation:

Sickle cell anemia is caused by the replacement of 6th amino acid in the beta chain of hemoglobin that is glutamic acid by valine.

   glutamic acid is a hydrophilic amino acid that is being replaced by a hydrophobic amino acid known as valine.

   As a result the red blood cells  appear as insoluble aggregates which which ultimately result in the sickling of Red blood cells.That"s why this disease is named as sickle cell anemia.

7 0
4 years ago
Que tipo de aislamiento reproductivo exhibe la mula?
bulgar [2K]

Answer:

<em>Aislamiento postreproductivo: Esterilidad del híbrido</em>

Explanation:

El concepto biológico de <u>especie</u>, en su definición, destaca que los ejemplares de una especie no pueden entrecruzarse con ejemplares de otra especie distinta, o bien, en caso de hacerlo, no hay éxito reproductivo.

Existen distintos mecanismos de aislamiento reproductivo, que son barreras que inhiben o interrumpen el flujo génico entre especies distintas. Se trata de caracteres biológicos propios de cada especie que previenen la reproducción con otras especies.

Estos mecanismos de aislamiento reproductivo pueden ser precigóticos o postcigóticos.  

  1. Pre-copulatorios o pre-cigóticos:
  • Ecológico o por aislamiento de hábitat;
  • Estacional o temporal;
  • Sexual o etológico;
  • Mecánico;
  • Por incompatibilidad de gametas.  

   2. Post-copulatorios o cigóticos:

  • Inviabilidad del híbrido;
  • Esterilidad del híbrido;
  • Híbrido con viabilidad o fertilidad disminuido;
  • Interacciones citoplasmáticas.

La mula es producto de la cruza entre dos especies distintas: una yegua (<em>Equus ferus caballus</em>) y un burro (<em>Equus africanus asinus</em>). Es un ejemplo de la accion de mecanismo poscigótico, en el cual se forma un híbrido viable esteril. Este ejemplar puede nacer crecer y sobrevivir, pero que no pueden producir gametas funcionales, por lo cual no pueden reproducirse.        

4 0
3 years ago
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