The significance of oocyte polarity is that
a. cell systems near the anterior (head) end of an
organism are aligned differently from cell
systems at the posterior end.
b. it results in the formation of the gray crescent.
c. it produces differently pigmented regions in the
egg.
d. cytoplasmic substances located at one end of the
zygote differ from cytoplasmic substances
located at the other end.
e. all of these are true.
Answer: d
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What does the term biogenesis mean?
A. Formation of life from nonliving chemicals B. Formation of self-replicating molecules C. Formation of chemicals from organic monomers D. Formation of life from preexisting cells
In order for cellular respiration to occur in a cell, oxygen must be present.
a. true b. false
The importance of the citric acid cycle in energy production is the formation of significant amounts of ________.
Fill in the blank(s) with the appropriate word(s).
Which stage of translation is shown here?
a. initiation b. elongation c. termination d. peptide bond formation e. polysome activity