Following statements are regarding to the wnt signalling.

A. Wnt proteins interact with several cell-surface proteins and activate multiple downstream signal transduction pathways. The principal signaling receptor for Wnt proteins is Frizzled (Fz), which contains seven transmembrane α helices.

B. The palmitate attached to the Wnt protein binds to a specific site on the Fz intracellular domain and stabilizes the Wnt-Fz complex.

C. “canonical” Wnt signaling pathway uses a second transmembrane protein, LRP, that associates with Frizzled in a Wnt signal– dependent manner.

D. In the resting state, two kinases in the complex, casein kinase 1 (CK1) and GSK3, sequentially phosphorylate β-catenin on multiple tyrosine residues.

Which of the following statements are correct?

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#Question id: 12566

#Unit 10. Ecological Principles

Forests with a high density of native conifer trees are found in:

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#Question id: 8898

#Unit 9. Diversity of Life Forms

Which extant chordates are postulated to be most like the earliest chordates in appearance?

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#Question id: 750

#Unit 1. Molecules and their Interaction Relevant to Biology

In strong acid and at elevated temperatures, for example perchloric acid (HClO4) at more than 100°C, nucleic acids tend to:

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#Question id: 19687

#Unit 13. Methods in Biology

In ECG, QRS complex represents:

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#Question id: 15117

#Unit 8. Inheritance Biology

In any population of 10000, in which 100 females were affected from x-linked recessive disorder. What will be the carrier frequency for this x-linked recessive disorder.