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( ) As principais divisões das gimnospermas são cícadas, ginkgos, gnetófitas e coníferas.
( ) Os ginkgos representam a divisão
( ) As gnetófitas compartilham algumas características com as angiospermas.
( ) As coníferas são representadas atualmente por um único gênero.
A sequência correta, de cima para baixo, é:
( ) Estrelas-do-mar, ouriços-do-mar e bolachas-da-praia são exemplos de representantes desse filo.
( ) Apresentam simetria radial e endoesqueleto composto por ossículos calcários.
( ) As projeções para fora do esqueleto, na forma de espinhos ou tubérculos, definiram o nome do filo.
( ) A maioria dos seus representantes consegue regenerar partes do corpo.
A sequência correta, de cima para baixo, é:
( ) Peixes podem ser classificados como ósseos, cartilaginosos e agnatos.
( ) Peixes cartilaginosos apresentam brânquias protegidas pelo opérculo.
( ) Lampreias e feiticeiras são exemplos de peixes agnatos.
( ) Nos peixes ósseos, a água entra pelo espiráculo para banhar as brânquias.
A sequência correta, de cima para baixo, é:
( ) A bexiga é o órgão responsável por armazenar e conduzir a urina.
( ) A função da uretra é transportar a urina recém-produzida até a bexiga.
( ) A uretra masculina difere da feminina por ter, além da função excretora, a função reprodutora.
( ) Dentre as funções dos rins estão: produzir urina e alguns tipos de hormônios, e possibilitar a homeostase.
Está correta, de cima para baixo, a seguinte sequência:
O texto a seguir é referência para a questão.
How the American Dream has changed
The phrase ‘American Dream’ was officially coined just under 90 years ago in a book called The Epic of America by James Truslow Adams. He argued it was “that dream of a land in which life should be better and richer and fuller for everyone, with opportunity for each according to ability or achievement.”
Today: No single American Dream?
For some today the American Dream means a chance for fame and celebrity, while for others it means succeeding through the old adage of family values and hard work. Still others believe that the American Dream just represents a world closed to all but the elite with their wealth and contacts […]. Meanwhile, surveys have found that almost half of all millennials believe the American Dream is dead. In an ever-changing country, the idea of what the American Dream means to different people is changing too.
(Disponível em: https://www.msn.com/en-us/news/other/what-the-american-dream-looked-like-the-decade-you-were-born/ss-AABbxjy)
O texto a seguir é referência para a questão.
How the American Dream has changed
The phrase ‘American Dream’ was officially coined just under 90 years ago in a book called The Epic of America by James Truslow Adams. He argued it was “that dream of a land in which life should be better and richer and fuller for everyone, with opportunity for each according to ability or achievement.”
Today: No single American Dream?
For some today the American Dream means a chance for fame and celebrity, while for others it means succeeding through the old adage of family values and hard work. Still others believe that the American Dream just represents a world closed to all but the elite with their wealth and contacts […]. Meanwhile, surveys have found that almost half of all millennials believe the American Dream is dead. In an ever-changing country, the idea of what the American Dream means to different people is changing too.
(Disponível em: https://www.msn.com/en-us/news/other/what-the-american-dream-looked-like-the-decade-you-were-born/ss-AABbxjy)
O texto a seguir é referência para a questão.
More Than Just Children's Books
Krumulus, a small bookstore in Germany, has everything a kid could want: parties, readings, concerts, plays, puppet shows, workshops and book clubs.
“I knew it was going to be very difficult to open a bookstore, everyone tells you you're crazy, there will be no future,” says Anna Morlinghaus, Krumulus's founder. Still, she wanted to try. A month before her third son was born, she opened the store in Berlin's Kreuzberg district.
BERLIN — On a recent Saturday afternoon, a hush fell in the bright, airy “reading-aloud” room at Krumulus, a small children's bookstore in Berlin, as Sven Wallrodt, one of the store's employees, stood up to speak. Brandishing a newly published illustrated children's book about the life of Johannes Gutenberg, the inventor of the printing press, he looked at the crowd of eager, mo stly school-aged children and their parents. “Welcome to this book presentation”, he said. “If you fall asleep, snore quietly”. Everyone laughed, but no one fell asleep. An hour later, the children followed Wallrodt down to the bookstore's basement workshop, whe re he showed them how Gutenberg fit leaden block letters into a metal plate. Then the children printed their own bookmark using a technique similar to Gutenberg's, everyone was thrilled.
(Disponível em: https://www.nytimes.com/2019/05/20/books/berlin-germany-krumulus.html)
O texto a seguir é referência para a questão.
More Than Just Children's Books
Krumulus, a small bookstore in Germany, has everything a kid could want: parties, readings, concerts, plays, puppet shows, workshops and book clubs.
“I knew it was going to be very difficult to open a bookstore, everyone tells you you're crazy, there will be no future,” says Anna Morlinghaus, Krumulus's founder. Still, she wanted to try. A month before her third son was born, she opened the store in Berlin's Kreuzberg district.
BERLIN — On a recent Saturday afternoon, a hush fell in the bright, airy “reading-aloud” room at Krumulus, a small children's bookstore in Berlin, as Sven Wallrodt, one of the store's employees, stood up to speak. Brandishing a newly published illustrated children's book about the life of Johannes Gutenberg, the inventor of the printing press, he looked at the crowd of eager, mo stly school-aged children and their parents. “Welcome to this book presentation”, he said. “If you fall asleep, snore quietly”. Everyone laughed, but no one fell asleep. An hour later, the children followed Wallrodt down to the bookstore's basement workshop, whe re he showed them how Gutenberg fit leaden block letters into a metal plate. Then the children printed their own bookmark using a technique similar to Gutenberg's, everyone was thrilled.
(Disponível em: https://www.nytimes.com/2019/05/20/books/berlin-germany-krumulus.html)
1. Hong Kong foi cedida ao Reino Unido em 1842, após a Primeira Guerra do Ópio, quando se tornou uma colônia britânica.
2. Pelo acordo, ficou assegurado que nenhuma alteração poderá ser feita no sistema de governo de Hong Kong e em seu estilo de vida até o ano de 2047.
3. O governo central chinês tem afirmado de maneira recorrente sua jurisdição sobre Hong Kong, mas evitando atritos políticos entre os dois sistemas.
4. O passaporte utilizado pelos habitantes das duas regiões é o mesmo, porém o cidadão honconguês possui visto livre em vários países.
Assinale a alternativa correta
O estudante propôs uma estrutura a mais porque considerou em sua resposta que:
Ao adicionar carbonato de sódio na água de uma piscina, que está em condições consideradas adequadas para o banho, ocorrerá:
O nome desse composto, segundo a nomenclatura da IUPAC, é:
Numa dada combinação para montar uma pilha eletroquímica, o valor de diferença de potencial (AE) da pilha, no instante em que se ligaram os contatos, foi de 0,69 V.
A combinação utilizada nessa pilha foi entre as semicélulas:
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