3) Para ocorrer a manutenção da vida, é preciso haver um fluxo de energia. O fluxo de calor pode ser espontâneo ou não; e existem sistemas físicos abertos, fechados e isolados. Faça uma breve pesquisa e cite exemplos de cada sistema abaixo: - Aberto: - Fechado: - Isolado:

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?