3 years ago

Define autotrophs and heterotrophs

1 answer:

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Autotrophs are organisms that produce complex organic compounds (fats, carbohydrates, proteins). Ex: planta, algae and some bacteria.

Heterotrophs are organisms that can’t produce their own foods (organic compounds) so they rely on eating other organisms (plants or animals) to obtain their energy. Ex: dogs, humans, cats, giraffes, ect.

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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

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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.

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American Institute Of Floral Design

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Ribosomes, mitochondria, ER and chloroplast.

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