Precursor for the sphingosine is

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#Question id: 1503

#Unit 4. Cell Communication and Cell Signaling

When the genes responsible for familial breast cancer were sequenced, it was found that the polypeptides they encoded contained a zinc finger motif. What does this suggest to you about the normal functions of the products of these genes?

TLS Online TPP Program

#Question id: 1205

#Unit 4. Cell Communication and Cell Signaling

Acetylcholine on a smooth muscle cell is to phospholipase C as epinephrine on a liver cell is to    ?    .

TLS Online TPP Program

#Question id: 27374

#Unit 13. Methods in Biology

An aqueous solution contains two compounds X and Y. This solution gave absorbance values of 1.0 and 0.4 at 220 and 280 nm, respectively, in a 1 cm path length cell. Molar absorption coefficients (ε) of the compounds X and Y are as shown in the table below.

The concentration of Y in the solution is___________ mM.

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#Question id: 12546

#Unit 10. Ecological Principles

Use the survivorship curves in Figure to answer the following questions

Which curve best describes survivorship in elephants?

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#Question id: 5060

#Unit 5. Developmental Biology

Proteoglycans are large molecules consist of core proteins with covalently attached glycosaminoglycan polysaccharide side chains. They play critically important roles in the delivery of the