The gray crescent in frogs
a. stimulates zygote formation.
b. stimulates zygote development.
c. establishes the frog’s head-to-tail axis.
d. is not related to gastrulation.
e. triggers tissue specialization.
Answer: c
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In terms of membrane lipids, the plasma membranes of archaeons are more similar to those of the eukaryotes than to membranes of bacteria.
Answer the following statement true (T) or false (F)
Evaporation
What will be an ideal response?
The function of nucleosomes is to:
a. prevent DNA strands from tangling. b. help DNA replicate. c. make RNA synthesis possible. d. prevent RNA from tangling with DNA during transcription. e. prevent histones from tangling.
While on a walk through a forest, you notice birds in trees, earthworms in the soil, and fungi on plant litter on the forest floor. Based on your observations, you conclude that each of these organisms occupies a different
A) habitat. B) ecosystem. C) biosphere. D) biome.