(PUC-PR) No início da década de 70, dois cientistas (Singer e Nicholson) esclareceram definitivamente como é a estrutura das membranas celulares, propondo o modelo denominado de mosaico fluído. Nesse conceito, todas as membranas presentes nas células animais e vegetais são constituídas basicamente pelos seguintes componentes: 1 ponto a) ácidos nucleicos e proteínas; b) ácidos nucleicos e enzimas; c) lipídios e enzimas; d) enzimas e glicídios; e) lipídios e proteínas.

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above