What is not a hallmark of prophase?
a. nuclear envelope is visible with the light microscope.
b. nucleolus disappears.
c. mitotic spindle is beginning to assemble.
d. spindle fibers pull chromosomes to opposite sides of the cell.
e. duplicated chromosomes become visible with the light microscope.
d
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What is the period of rapid cell division in which the embryo does not increase in overall size?
A. syngamy B. cleavage C. neurulation D. meiosis E. crest formation
Agar is produced by ____
a. brown algae b. red algae c. phycobilins d. brown and red algae e. red algae and phycobilins
During aerobic respiration, which of the following directly donates electrons to the electron transport chain at the lowest energy level?
A) NADH B) ATP C) ADP + i D) FADH2
What are insect ears called?
a. Antennae b. Tympana c. Drummae d. Insects cannot hear