Two populations of cells may end up segregating themselves into different layers during development because they have different:
A) phospholipid molecules.
B) cell adhesion molecules.
C) sizes.
D) DNA.
E) apoptosis programming.
Answer: B
You might also like to view...
Which of the following steps occurs third during yeast Ty element transposition?
A. packaging of RNA in a VLP along with reverse transcriptase, a protease, and integrase B. transport of Ty RNA into the cytoplasm where it is translated into VLP proteins C. transcription of Ty element in the nucleus D. "infection" of nucleus with VLP E. Conversion of mRNA into double-stranded DNA with reverse transcriptase
Intervertebral discs are made of
a. fibrocartilage. b. bone. c. fat. d. tendon. e. muscle.
Summarize the steps involved with the inflammatory response. What will be an ideal response?
Transcription begins when
A. RNA polymerase comes to a stop sequence. B. new nucleotides are added to an existing strand of nucleotides. C. initiation factors assemble ribosomal subunits, mRNA, and initiator tRNA. D. RNA polymerase binds to a region of DNA called the promoter.