Which of the following signaling pathways can be activated by activation of receptor tyrosine kinases?

a. phospholipase Cγ                b. PI-3 kinase

c. MAP kinase                         d. none of the above

#Question id: 398

#Section 4: Fundamentals of Biological Engineering

One of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3). Carbonic acid is a weak acid that, when placed in an aqueous solution, dissociates into a bicarbonate ion (HCO3-) and a hydrogen ion (H+). (See figure.)

If the pH of blood drops, one would expect ________.

#Question id: 15565

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 5256

#Section 3: Genetics, Cellular and Molecular Biology

If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

#Question id: 3885

#Section 3: Genetics, Cellular and Molecular Biology

AZT (3'-azido-2',3'-dideoxythymidine), used to treat HIV infection, acts in HIV-infected cells by:

#Question id: 3806

#Section 3: Genetics, Cellular and Molecular Biology

How are damaged nucleotides recognized by DNA repair enzymes?