Practice Questions

TLS Online TPP Program

#Question id: 1104

Which of the following statements is true of signal molecules?

#XL - Q Biochemistry

When signal molecules first bind to receptor tyrosine kinases, the receptors phosphorylate a number of nearby molecules.
In response to some G protein-mediated signals, a special type of lipid molecule associated with the plasma membrane is cleaved to form IP3 and calcium.
In most cases, signal molecules interact with the cell at the plasma membrane, enter the cell, and eventually enter the nucleus.
Protein kinase A activation is one possible result of signal molecules binding to G protein coupled receptors.

More Questions

TLS Online TPP Program

#Question id: 356

#XL - Q Biochemistry

How does 0.5 M sucrose (molecular mass 342) solution compare to 0.5 M glucose (molecular mass 180) solution?

TLS Online TPP Program

#Question id: 357

#XL - S Microbiology

What is the concentration of H+ in a solution of 0.1 M NaOH?

TLS Online TPP Program

#Question id: 357

#XL - Q Biochemistry

What is the concentration of H+ in a solution of 0.1 M NaOH?

TLS Online TPP Program

#Question id: 358

#XL - S Microbiology

Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?

TLS Online TPP Program

#Question id: 358

#XL - Q Biochemistry

Consider the following reaction at equilibrium: CO2 + H2O ⇔ H2CO3. What would be the effect of adding additional H2O?

TLS Online TPP Program

#Question id: 359

#XL - S Microbiology

What is the concentration of OH− in a solution with an H+ concentration of 1.3 × 10^−4 M?