Root hairs are:a
flattened extensions of epidermal cells.
b. formed once in the area of cell maturation.
c. small in number.
d. located in front of the root tip.
e. short-lived
e
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Mitochondria arose from an endosymbiotic relationship between a eukaryotic cell and an aerobic bacteria. Which statement supports this theory?
a. Fossilized mitochondria are older than the oldest fossilized eukaryotes. b. Mitochondria can produce ATP outside of a eukaryotic cell. c. A mitochondrion has its own DNA in the form of a single circular chromosome, like bacteria. d. A mitochondrion has a only one outer membrane. e. A mitochondrion can survive indefinitely when removed from a eukaryotic cell.
The physical fragmentation of organic matter into smaller pieces is achieved primarily by invertebrate detritivores
Indicate whether the statement is true or false
LASIK surgery involves removing the cornea and reshaping the lens to correct for vision problems such as nearsightedness, farsightedness, and astigmatism
Indicate whether the statement is true or false
One of the primary functions of RNA molecules is to _____
A) transmit genetic information to offspring B) function in the synthesis of proteins C) make a copy of itself, thus ensuring genetic continuity D) act as a pattern or blueprint to form DNA