Which characteristic best describes vertebrates?
a. vertebral column
b. blood containing hemoglobin
c. four-chambered heart
d. lungs
e. live birth
a
Biology & Microbiology
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In seed plants, __________ allow reproduction
without standing water. Fill in the blank(s) with the appropriate word(s).
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Embryonic stem cells are harvested from the inner cell mass of an early stage embryo called a(n)
____________________. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
At which stage of meiosis are sister chromatids separated from each other?
a) anaphase II b) prophase I c) prophase II d) anaphase I
Biology & Microbiology
Membrane anchors set up the geography of a cell.
a. true b. false
Biology & Microbiology