01 - (PUC-RJ/2008) Qual das características abaixo NÃO está presente nas células vegetais?
(A) Parede celulósica.
(B) Mitocôndrias.
(C) Núcleo individualizado.
(D) Vacúolo.
(E) Centríolos.
(B) Mitocôndrias.
(C) Núcleo individualizado.
(D) Vacúolo.
(E) Centríolos.
02 - (UNIFESP/2008) Com a finalidade de bloquear certas funções celulares, um pesquisador utilizou alguns antibióticos em uma cultura de células de camundongo. Entre os antibióticos usados, a tetraciclina atua diretamente na síntese de proteína, a mitomicina inibe a ação das polimerases do DNA e a estreptomicina introduz erros na leitura dos códons do RNA mensageiro. Esses antibióticos atuam, respectivamente, no:
(A) ribossomo, ribossomo, núcleo.
(B) ribossomo, núcleo, ribossomo.
(C) núcleo, ribossomo, ribossomo.
(D) ribossomo, núcleo, núcleo.
(E) núcleo, núcleo, ribossomo.
(B) ribossomo, núcleo, ribossomo.
(C) núcleo, ribossomo, ribossomo.
(D) ribossomo, núcleo, núcleo.
(E) núcleo, núcleo, ribossomo.
03 - (UEM/ Verão/2008) – Assinale a alternativa que indica corretamente a estrutura celular e sua função.
A) O complexo de Golgi realiza a secreção celular, processo de síntese de proteínas.
B) A parede celular, constituída por proteínas e por celulose, delimita o espaço interno das células de todos os organismos.
C) Nas mitocôndrias, ocorre a liberação de energia nos processos de respiração celular e de fermentação.
D) A membrana plasmática, constituída por fosfolipídios e proteínas, controla a passagem de substâncias.E) O citoesqueleto, constituído por tubos e por filamentos protéicos, determina a rigidez celular.
B) A parede celular, constituída por proteínas e por celulose, delimita o espaço interno das células de todos os organismos.
C) Nas mitocôndrias, ocorre a liberação de energia nos processos de respiração celular e de fermentação.
D) A membrana plasmática, constituída por fosfolipídios e proteínas, controla a passagem de substâncias.E) O citoesqueleto, constituído por tubos e por filamentos protéicos, determina a rigidez celular.
04 - (UFPA/2008) Embora a diversidade dos seres vivos seja extremamente grande, quase todos (exceto os vírus) são constituídos por células. As células dos organismos vivos são muito parecidas, mas apresentam diferenças importantes; por exemplo, a célula vegetal diferencia-se da animal por apresentar as seguintes estruturas celulares:
(A) membrana celulósica e lisossomos.
(B) membrana plasmática e.centríolos.
(C) membrana nuclear e mitocôndrias.
(D) membrana celulósica e cloroplastos.
(E) membrana nucelar e lisossomos.
(B) membrana plasmática e.centríolos.
(C) membrana nuclear e mitocôndrias.
(D) membrana celulósica e cloroplastos.
(E) membrana nucelar e lisossomos.
05 - (UFMT/ 2008) Mitocôndrias são organelas presentes nas células eucarióticas cuja principal função é:
A) digestão celular
B) respiração celular
C) secreção de proteínas
D) transporte de nutrientes
E) orientação da divisão celular
B) respiração celular
C) secreção de proteínas
D) transporte de nutrientes
E) orientação da divisão celular
Obs: para melhor resolução dos exercícios o gabarito está nos comentários... vá até ali confira o gabarito e deixe seu recado...
28 comentários:
Gabarito
1 - E 2 - B 3 - D
4 - D 5 - B
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