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Setler [38]
2 years ago
11

1. la principal función del sistema respiratorio es llevar oxígeno a través de los vasos

Biology
1 answer:
aev [14]2 years ago
8 0

Answer:

No es la principal función.Es falso

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How can a mother with the B blood type, having A antibodies in her plasma, carry a baby full-term that inherits the A blood type
DanielleElmas [232]

Answer:

The mother can carry a full-term baby with A blood type because the mother's blood does not mix with the baby's blood, so the mother's immune system does not activate attacking the baby.

Explanation:

The reason why a mother with B blood type and A antibodies in her system can carry a full-term pregnancy is thanks to the placenta. The placenta is a shared organ between the mother and the baby. Its function is to protect the baby and produce the necessary exchanges of nutrients and wastes between the maternal blood and the baby's blood. As the two types of blood are separated, and they never get in contact during pregnancy, the immune system of the mother does not recognize the baby as a treat. The mother can have A antibodies in her plasma due to a previous pregnancy where during delivery, the two types of blood mixed, also it can be due to any contact with the A blood type. When the foreign blood enters the body, the immune system forms antibodies for it.

4 0
3 years ago
In cabbage butterflies, White wings are dominant to yellow wings. Create a Punnett Square that shows the offspring that results
ioda

Answer:

1. 50%

2. ½ for both Ww and ww

Explanation:

White wings: WW, Ww

Yellow wings: ww

Ww x ww

White wing: W w

Yellow wing: w Ww ww

w Ww ww

Phenotypic ratio: Ww: ½ ww: ½

Percentage of offspring with yellow wings is 50%

5 0
3 years ago
Using land for agriculture and forestry can lead to soil erosion. Which of the
VLD [36.1K]
All of them are correct soil erosion turns grains of soil into mere grains of sand which when placed in water makes the water much cloudier, biodiversity will decrease as soil erosion leads to a more Barron and dry landscape, respiratory disease may be caused by inhaled particles of dust which can be create from soil erosion, and desertification as mentioned earlier soil erosion leads to a more baron and dried out landscape as the soil can’t hold water as much as it used too.
7 0
3 years ago
2. When lightning occurs, it produces a sound wave (the thunder you hear) and a light wave (the light you see) at the same exact
WINSTONCH [101]
You see first the light wave because light travels faster than sound. Hope this helps
8 0
3 years ago
Meselson and Stahl's experiments proved that DNA replicates by which mode?
Irina18 [472]

Answer:

Semi-conservative

Explanation:

Meselson–Stahl experiment proved that DNA replication is a semiconservative process, feeding E. colo bacteria with different types of Nitrogen isotopes (N14 and N15).

Changing the type of radioactive compound in different times of bacteria grow, they could observe that both of the isotopes were present on the bacteria culture.

Basically, if the bacteria present both of them, the DNA was replicated semiconcervely.

Guess what? they show both! (See the image for more information)

6 0
3 years ago
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