In the figure above, the honeycomb on which
the bee is standing is made up primarily of
which of the following:a.
carbohydrates
b. nucleotides
c. proteins
d. lipids
e. amino acids
D
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An embryo sporophyte surrounded by nutritive tissue and a tough, protective outer coating makes up a(n) ____
a. pollen grain b. spore c. ovule d. seed e. strobilus
Members of this phylum have radial symmetry and nematocysts; they may have polyp or medusa
forms (or both) as adults.
a. Nematoda b. Cnidaria c. Porifera d. Rotifera e. Ctenophora
Why are dwarf pea plants shorter than other pea plants?
a. because they produce very little gibberellin hormone b. because they have an altered gibberellin amino acid sequence c. because the enzymes involved in gibberellin synthesis are missing d. because they cannot make any gibberellin
Which of the following is a chemical signal that diffuses across the gap between adjacent neurons to convey a message to the next cell?
A) action potential B) dendrite C) synapse D) neurotransmitter