Practice Questions

TLS Online TPP Program

#Question id: 2023

Which of the following is a pathway that would lead to the activation of cytotoxic T cells?

#Unit 4. Cell Communication and Cell Signaling

B cell contact antigen → helper T cell is activated → clonal selection occurs
body cell becomes infected with a virus → new viral proteins appear → class I MHC molecule-antigen complex displayed on cell surface
self-tolerance of immune cells → B cells contact antigen → cytokines released
complement is secreted → B cell contacts antigen → helper T cell activated → cytokines released

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TLS Online TPP Program

#Question id: 5666

#Unit 5. Developmental Biology

When the extracellular side of the receptor binds resact, it activates latent guanylyl cyclase in the cytoplasmic side of the receptor. Active guanylyl cyclase causes the sperm cell to produce more cyclic GMP (cGMP), this compound_____

TLS Online TPP Program

#Question id: 7132

#Unit 5. Developmental Biology

What happens if you introduce the gene myoD into fibroblast cells growing in culture?

TLS Online TPP Program

#Question id: 11630

#Unit 8. Inheritance Biology

What is the F2 phenotypic ratio in 3 QTL?

TLS Online TPP Program

#Question id: 18763

#Unit 13. Methods in Biology

Which of the following occurs between particular short sequences present on otherwise dissimilar parental molecules?