Which branch of this phylogenetic tree identifies a kingdom?
a. C
b. D
c. E
d. D and E
e. C, D, and E
A
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Estrogen receptor (ER) ? typically ____, while ER? typically ____
a. stimulates DNA binding; inhibits DNA binding b. stimulates cell proliferation; inhibits cell proliferation c. stimulates channel opening; inhibits channel opening d. inhibits DNA binding; stimulates DNA binding e. inhibits cell proliferation; stimulates cell proliferation
In higher eukaryotes genes are very close together
1.True 2.False
Channels that open in response to neurotransmitters or other signal molecules are called _______ channels.
a. voltage-gated b. ligand-gated c. signal-gated d. ion
The following is a description of which major group of fungi? Many species within this group are of great importance to humans. Spores form within a fungal sac. The fungal sac develops from the union of two hypha of opposite mating type. Meiosis, sometimes followed by mitosis, results in the formation of 4-8 haploid spores.
A) Chytridiomycota B) Zygomycota C) Ascomycota D) Basidiomycota E) Deuteromycota