#Question id: 6954
#SCPH06 I Botany
Between fertilization and the first cleavage division, actin filaments pull the cytoplasm of the frog egg toward the point of sperm entry in a process called:
#Question id: 1709
#SCPH01 Biochemistry
What are the specialized cell type involved in the entry of lymphocytes into lymph nodes called?
#Question id: 53
#SCPH01 Biochemistry
Calculate the number of times the DNA of a modern E. coli cell has been copied accurately since its earliest bacterial precursor cell arose about 3.5 billion years ago. Assume for simplicity that over this time period, E. coli has undergone, on average, one cell division every 12 hours (this is an overestimate for modern bacteria, but probably an underestimate for ancient bacteria).
#Question id: 749
#SCPH01 Biochemistry
Which of the following is correct for the A form of DNA structures?
#Question id: 1081
#SCPH06 I Botany
Which of the following is a type of local signaling in which a cell secretes a signal molecule that affects neighboring cells?