____ are starch-containing organelles present in root cells that sink toward one side of the cell in response to gravity (and thus play a role in gravitropism)
Fill in the blank with the appropriate word.
Statoliths
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Rough endoplasmic reticulum is studded with ribosomes.
Answer the following statement true (T) or false (F)
What components of eukaryotic cells leave a fossil record?
A. organelles B. nuclear membranes C. cell walls D. None of these choices are correct.
Fungi is to fungus as is to
a. mycelium, mycelia b. hypha, hyphae c. sporangia, sporangium d. ascus, asci
The antiparallel arrangement within DNA molecules refers to
A. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction. B. a purine always bonding to a pyrimidine. C. an original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule. D. each base bonding at the 1' position of the sugar.