Laboratório de Tecnologia Educacional BIBLIOTECA DIGITAL               DE CIÊNCIAS

Roteiro de aula prática para dosagem de Vitamina C em frutas.

Nessa atividade serão realizados testes enzimáticos com extrato de abacaxi na degradação da gelatina, o que demonstra a presença de proteases, proporcionando uma discussão sobre a importância das frutas no processo digestivo.

Ilustração e infográfico sobre estruturas de plantas e representantes nativos do Brasil

Nesse podcast discutimos questões históricas e atuais relacionadas a alimentação, com enfoque nas populações nativas

35cm Similarly to other Brazilian jays, the Curl-crested jay has white lower parts and blue and black upper parts. It may be confused with the Plush-crested jay (Cyanocorax chrysops), but while the last presents the crest in the back of the head, the yellow iris and a blue patch around the eyes, the Curl-crested jay presents the crest on the forehead, the red iris and the head is entirely black. Whereas the Old World ravens are mostly black, as well as the crows, the Brazilan corvids are colorful and most of them have white lower parts. There are 6 species of jays in Brazil, all of them extremely beautiful. The Curl-crested jay is one of Brazilian’s noisiest jays. To make the noise ...

12,5 cm. The general color is green, but the male has a bright blue area in the wings and lower back. The female does not have this blue area and the belly is somewhat yellow. There may be mutations producing all yellow or blue individuals. The plumage of the immature individuals is not as bright as the adult’s. Distribution: Tropical South America. Habitat: Forest borders, gallery forests, parks, gardens and open areas. Diet: Feeds on fruits, seeds, buds and flowers. Reproduction: It is monogamous. The couple stays together for the rest of their lives. The nest is built inside a hole in a tree that may be an abandoned nest of hornero (Furnarius rufus) or an artificial nest box. ...

13,5cm The most distinguishing features of this species are the yellowish-orange head and the grayish-green body. This shades of color may vary depending on the subspecies, given that this bird is distributed thoughout the tropical region South to the Amazon river and East to the Andes. There is also a curiously isolated population in the Orinoco river basin. It lives in secondary forest, forest edges and even in cities with plenty of trees. Spends most of its time in the canopy, rarely coming to the ground. This bird moves in a very typical way, climbing the branches in a fast zig-zag, up to the tip and then letting itself fall onto the base of the next branch. It feeds mainly on s...

18,5 cm. The body is gray, slightly blue with the inferior parts lighter. The tail and the tips of the wings are blue, somewhat green. There is a spot of this color in the shoulders. Male and female are similar. Distribution: Mideast Brazil from Maranhão to Rio Grande do Sul, also in Venezuela, Colombia, Bolivia, Argentina, Paraguay and Uruguay. Habitat: Lives on trees, either in open areas, parks or cities. Diet: Feeds on fruits, leaves, buds, nectar including from eucalyptus trees. Also catches flying insects as butterflies and termites. Reproduction: During the breeding season the male exhibits its shoulders to the female. The nest is built by the couple and is a compact open b...

Frutas e legumes contêm um corante que pode servir para determinação da acidez ou alcalinidade. A solução de repolho roxo aqui sugerido funciona como indicador universal, pois sua cor se altera em diferentes faixas de valores de pH.

Realizar experimentos com frutas para observação da atividade de enzimas presentes em extratos vegetais.