Which of the following structures in a
flowering plant life cycle is directly formed by
meiosis
a. microspores and megaspores
b. sperm and eggs
c. male and female gametophytes
d. male and female sporophytes
e. all of these structures are formed directly
by meiosis
A
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Which of the following is true of gap junctions?
A. They are holes in the cell wall through which the plasma membrane and endoplasmic reticulum of adjacent cells are connected. B. They are channels in the plasma membrane of plant cells made of transmembrane proteins that allow ions and small molecules to pass between adjacent cells. C. They are channels in the plasma membrane of animal cells made of transmembrane proteins that allow ions and small molecules to pass between adjacent cells. D. They provide points of structural support between adjacent plant cells. E. They provide points of structural support between adjacent animal cells.
Cassava roots release the toxin hydrogen cyanide when their cells are damaged
A. true B. false
A fat is called ________ if all carbons of the fatty acid chain are single bonded to 2 other carbons and 2 hydrogens.
Fill in the blank(s) with the appropriate word(s).
Archaea are cellular organisms that have unique cell membrane ________.
Fill in the blank(s) with the appropriate word(s).