In human and many other eukaryotic species' cells, the nuclear membrane has to disappear to permit _____
A) cytokinesis
B) the attachment of microtubules to kinetochores
C) the splitting of the centrosomes
D) the disassembly of the nucleolus
B
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Why do pine trees have two different types of cones?
A. One type is produced in the fall, the other type is produced in the spring. B. One type produces ovules, the other type produces pollen. C. One type produces the gametophyte, the other type produces the sporophyte. D. One type produces seeds, the other type produces fruit.
The ________ are a group within the Euglenozoa that have a unique, single mitochondrion.
Fill in the blank(s) with the appropriate word(s).
Tissue cells are connected to the extracellular matrix by receptors that bind to an adhesive protein called
a. fibronectin. b. aggrecan. c. integrin. d. lamin.
Shingles, or herpes zoster, is a reactivation of the virus that causes
A) smallpox. B) German measles. C) measles. D) whitlows. E) chickenpox.