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lakkis [162]
3 years ago
11

What is biology? Check all that apply

Biology
1 answer:
mestny [16]3 years ago
5 0
The study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution.
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What is the human female reproductive system is adapted for? A. Production of zygotes in ovaries B. External fertilization of ga
victus00 [196]

Answer:

D. Transport of oxygen through a placenta to a fetus.

Explanation:

Zygotes are fertilized egg cell, zygotes aren't produced in the ovaries but ovums or egg cells are produced in the ovaries. So option A is false.

Fertilization is internal not external in human. Option B is wrong.

Production of milk happens in the mammary gland (the breast) not in the reproductive system. Option C is false.

Transport of oxygen through a placenta to a fetus. The placenta is a vascular organ which is implanted in the wall of the uterus (a part of the female reproductive system) and links to the foetus through the umbilical cord.

8 0
3 years ago
Si se aparean especies diferentes como por ejemplo el cruce entre caballos y burros; podemos afirmar que si llegan a tener desce
White raven [17]

Answer:

El híbrido va a ser esteril.

Explanation:

En la cruza entre dos especies distintas, cuando ocurre, existen distintos mecanismos de aislamiento reproductivo, que son barreras que inhiben o interrumpen el flujo génico entre especies distintas. Es decir que no habrá exito reproductivo de estas cruzas. 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 (Equus ferus caballus) y un burro (Equus africanus asinus). 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 puede producir gametas funcionales, por lo cual no puede reproducirse.  

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3 years ago
A group of scientists believes that a pigment found in red vegetables helps cells to live longer. They test their theory by inje
Amanda [17]
The limitation is cels
3 0
3 years ago
There are many different categories of T-cells that carry out various roles for the immune system. Differentiation for most T-ce
Likurg_2 [28]

Answer:

The answer is actually B) Memory T. Memory T cells rapidly produce large numbers of effector T-cells when re-exposed to their antigens, which provides the immune system  memory against past infections.

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3 years ago
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How does age and gender affect blood pressure
ludmilkaskok [199]

Answer:

Gender affects blood pressure, blood pressure is higher in men than in women at similar ages.

pulse pressures (PP) were higher in males than in females among adults less than 45 years old. Diastolic blood pressures were lower among adult females across all age categories.

Explanation:

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