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TLS Online TPP Program

#Question id: 1117

At puberty, an adolescent female body changes in both structure and function of several organ systems, primarily under the influence of changing concentrations of estrogen and other steroid hormones. How can one hormone, such as estrogen, mediate so many effects?

#XL - Q Biochemistry

  1. Estrogen is produced in very large concentration by nearly every tissue of the body.

  2. Each cell responds in the same way when steroids bind to the cell surface.

  3. Estrogen is kept away from the surface of any cells, not able to bind it at the surface.

  4. Estrogen binds to specific receptors inside many kinds of cells, each with different responses.

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TLS Online TPP Program

#Question id: 672

#XL - Q Biochemistry

An ideal α-helix has a pitch of 0.54 nm and a rise of 0.15 nm. What is the length along the helix axis for a segment of an ideal α-helix that contains 30 amino acids?
TLS Online TPP Program

#Question id: 674

#XL - Q Biochemistry

Proline is not often found in a-helices of proteins because it
TLS Online TPP Program

#Question id: 675

#XL - Q Biochemistry

Which statement is not true about an α-helix?
TLS Online TPP Program

#Question id: 676

#XL - Q Biochemistry

What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?
TLS Online TPP Program

#Question id: 683

#XL - Q Biochemistry

Which factor does not help to explain why many proteins exhibit quaternary structure?
TLS Online TPP Program

#Question id: 684

#XL - Q Biochemistry

Protein subunits in a multisubunit protein are held to each other primarily by