In plant cells, the first sign of cytokinesis is the formation of a cell plate instead of a cleavage furrow. The cell plate is formed because plant cells
A. have a cell wall.
B. don't divide after mitosis, but become one larger cell with multiple nuclei.
C. have a nucleus.
D. don't have a cell membrane.
E. All of the answer choices are correct.
A. have a cell wall.
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a. beneath the pituitary gland b. between the pons and the medulla oblongata c. next to the pancreas d. on top of the kidneys e. attached to the liver
When electrons flow through the electron transport system from NADH to oxygen, what is the sequence of molecules through which they move?
A) complex I, cytochrome c, complex III, coenzyme Q, complex IV, O2 B) complex I, coenzyme Q, complex III, complex IV, O2 C) complex I, coenzyme Q, complex IV, cytochrome c, O2 D) complex I, coenzyme Q, complex III, cytochrome c, complex IV, O2 E) complex II, coenzyme Q, complex III, complex IV, O2
Which of the following occurs during prometaphase (late prophase)?
A) continuous kinetochore microtubule shortening B) Rho-stimulated formation of a contractile ring C) centrosome duplication D) APC targeting of securin destruction E) nuclear envelope fragmentation
Entry of a virus into the lytic cycle after lysogeny has been established is called ________.
A. induction B. lysogenic conversion C. lysogenic reversion D. None of the choices are correct.