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UNO [17]
2 years ago
15

What is the fundamental unit of matter?

Biology
1 answer:
LenKa [72]2 years ago
7 0

the atom is the fundamental unit of matter.

(hope this helps ^^)

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Los métodos hormonales son eficientes porque: * A: impiden la entrada de los espermatozoides C: Se inhibe (no se desarrolla) la
timofeeve [1]

Answer: C: Se inhibe (no se desarrolla) la ovulación.

Explanation:

Los métodos anticonceptivos se utilizan prevenir el embarazo no deseado, evitando que el esperma fertilice a un óvulo. Hay distintos tipos, los cuales se clasifican en:

  • Anticonceptivos hormonales: Contienen hormonas, tales como estrógeno y progesterona, que previenen la ovulación (es decir, la liberación de óvulos de los ovarios). De esta manera, al no haber óvulo disponible, por mas que hayan espermatozoides, no va a ocurrir ninguna fecundación. El método mas conocido es la píldora o pastilla anticonceptiva.
  • Anticonceptivos de barrera: Proveen una barrera física que impide la fecundación al impedir el encuentro entre el óvulo y el espermatozoide. Por ejemplo, el uso de preservativos o condones. En estos métodos, se impide la entrada de los espermatozoides, no se encuentran con el óvulo y la esperma queda atrapada dentro del condón.
  • Anticonceptivos permanentes: Proveen un método permanente como  por ejemplo el Dispositivo Intrauterino que se coloca en el tracto uterino con una vida media de meses o años y posee un efecto espermicida que mata a los espermatozoides (por lo que no lograrán encontrar un óvulo). Otro ejemplo es la vasectomía, la cual es una cirugía que corta los conductos deferentes que transportan a los espermatozoides por lo que ya no pueden salir de los testículos para producir la fecundación (quedan atrapados dentro de los testículos, no entran al tracto uterino y no encuentran al óvulo)

Tanto los métodos de barrera como los permanentes, no inhiben la ovulación aunque si impiden que el óvulo se encuentre con el espermatozoide. <u>Entonces, los métodos hormonales son los únicos que logran inhibir la ovulación</u>. Las píldoras que poseen las hormonas previamente mencionadas pero fabricadas sintéticamente. Las mismas mimetizan el efecto de las hormonas naturales producidas por el cuerpo, alterando el ciclo menstrual regular y así evitan el embarazo ya que no habrá óvulo disponible para fecundar. Además, también pueden alterarla mucosidad en el cuello del útero para que los espermatozoides no pueden atravesarlo y llegar al óvulo. De todas maneras, el objetivo principal y mas importante de los métodos hormonales es bloquear la ovulación.

6 0
3 years ago
WILL GIVE BRAINLIEST!!! Both pleiotropy and polygenic inheritance are key examples of Non-Mendelian inheritance.Which of the fol
Deffense [45]

Answer:

It’s C

Explanation:

It’s true because the multiple symptoms of Marfan syndrome, are related to a single gene mutation

3 0
3 years ago
Voice pitch is an inherited trait. Which family group is most likely to occur?
irina [24]

Answer:

C. A low-pitched parent and a high-pitched parent have a child with a medium-pitched voice.

Explanation:

I just took the test on edge and got it right.

8 0
3 years ago
How did qualitative, chemical,and enzyme test help avery identify DNA as the transforming principle
Rufina [12.5K]
<span>Avery Identified through a qualitative test that DNA was present. Through a chemical test he found that the make up was DNA. Through enzyme testing Avery found that only DNA degradation stopped transforming.</span>
6 0
3 years ago
What ecological lesson can we learn from the controlled experiment on the clearing of forests?
VashaNatasha [74]

Vegetation controls water and nutrient loss from ecological lesson can we learn from the controlled experiment on the clearing of forests.

<h3>What about clearing of forest?</h3>
  • Deforestation is the intentional clearing of wooded land.
  • Forests have been cleared throughout history and into the present era to make room for agriculture and animal grazing as well as to obtain wood for fuel, manufacture, and construction.
  • Deforestation has dramatically altered the landscape all around the planet.
  • The process of permanently removing vegetation, such as trees and bushes, together with their roots, is known as clearing woods and forests.
  • There are both direct and indirect causes of deforestation.
  • Natural factors including storms, fires, parasites, and floods are among the direct culprits.
  • Human activities include the extension of agriculture, the raising of livestock, the extraction of timber, oil, and minerals, the building of dams, and the development of infrastructure.

Learn more about clearing of forest here:

brainly.com/question/12314060

#SPJ4

7 0
2 years ago
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