
Câncer
Authored by Livia Martins
Biology
University
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34 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Células cancerosas ignoram controles normais de proliferação e:
Estimulam a apoptose
Colonizam outros tecidos
Mantêm adesão celular
Respeitam a inibição por contato
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A metástase ocorre quando células malignas:
Permanecam no tumor primário
Penetram na corrente sanguínea ou linfática e colonizam outros tecidos.
São eliminadas pelo sistema imune
Sofrem senescência
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tumores benignos diferem dos malignos porque:
Não invadem outros tecidos
Formam metástases
Têm instabilidade genética
Originam-se de mutações em oncogenes
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O tipo mais comum de câncer em humanos (≈80% dos casos) é:
Sarcoma
Leucemia
Carcinoma
Linfoma
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O "efeito Warburg" refere-se ao fato de células cancerosas:
Utilizarem fosforilação oxidativa prioritariamente
Consumirem mais glicose para síntese de biomoléculas
Produzirem ATP exclusivamente via mitocôndrias
Ignorarem sinais de hipóxia
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A apoptose é evitada por células cancerosas devido a:
Ativação de p53
Mutações em genes supressores tumorais
Senescência replicativa
Controle rígido do ciclo celular
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Genes que, quando mutados, causam perda de função e aumentam o risco de câncer são:
Proto-oncogenes
Genes supressores de tumor
Oncogenes virais
Genes de reparo epigenético
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