题目内容

Which molecules are expressed on the surface of immune cells?

A. TCR
B. Pattern recognition receptors (PRRs)
C. Pathogen-associated molecular patterns( PAMPs)
D. Interferons

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更多问题

Which of the followings are usually innate immune responses?

A. Inflammation
B. Phagocytosis
C. Humoral response
D. Complement response
E. Physical barriers

Which enzymes are needed in bacterial DNA replication?

A. Primase
B. DNA polymerases
C. DNA ligase
D. Helicase
E. DNA gyrase

Which cell structure is usually present in bacterial but not eukaryotic cells?

A. Cell wall
B. Sex pili
C. Ribosome
D. Nucleus

控制工作得以展开的基础是

A. 建立控制标准
B. 分析偏差原因
C. 采取纠正措施
D. 明确问题性质