What is the first part of the seedling to come out during germination?
a. plumule
b. radicle
c. cotyledons
d. leaves
e. coleoptile
b
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When comparing gene regulation in prokaryotes to that in eukaryotes, which is better? Justify your
answer.
What will be an ideal response?The term that refers to the ability of the body to combat pathogens is _________.
Fill in the blank(s) with the appropriate word(s).
When were the oldest stromatolites formed?
a. about 2.1 billion years ago b. about 3.5 billion years ago c. about 3.9 billion years ago d. about 4.2 billion years ago
Phospholipids assemble spontaneously into bilayers driven by the attraction of their "tail" portions to each other and of their "head" portions to each other. The "head" portions are:
A) hydrophobic. B) composed of carbon-hydrogen chains. C) hydrophilic. D) nonpolar. E) directed away from intra- and extracellular fluid.