The corolla is made up of
a. sepals.
b. petals.
c. carpels.
d. ovaries.
e. anthers.
Answer: b
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Although toxic to early autotrophs and heterotrophs, ________ is essential to most modern forms of life, where it functions as an electron acceptor
a. oxygen b. phosphate c. magnesium d. carbon dioxide
When fatty acids are broken down to make ATP, which molecule is formed and at which step in aerobic
respiration does it enter?
a. acetyl CoA, which enters into glycolysis b. acetyl CoA, which enters into the Krebs cycle c. pyruvate, which enters into the Krebs cycle d. PGAL, which enters into electron transfer phosphorylation e. PGAL, which enters into glycolysis
The biome with the most complex diversity is
the a. tundra. b. taiga. c. tropical rain forest. d. desert. e. grassland.
Sound waves begin in the oval window create pressure waves first in the ____
a. middle ear b. semicircular canals c. cochlear duct d. scala tympani e. scala vestibuli