In an example of embryonic induction, signals from cells in the ________ cause gastrulation
a. dorsal lip
b. ectoderm
c. gray crescent
d. endoderm
a
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What situation causes stress to reefs?
a. a parasitic relationship with dinoflagellates b. clear waters in which all nutrients have settled c. decline in fishing operations d. lowering of sea level due to climate changes e. pollutants released in coastal waters
The tryptophan codons of the attenuator sequence help speed up transcription of downstream trp genes at high concentrations of tryptophan
Indicate whether the statement is true or false
For a stem that has a vascular cylinder, which sequence of structures is in the correct order, from outside to inside?
a. stele ? epidermis ? pith ? cortex b. epidermis ? cortex ? stele ? pith c. stele ? cortex ? epidermis ? pith d. cortex ? stele ? pith ? epidermis
The filtration of wastes from the blood using artificial devices because of failure or impairment of the kidneys is known as ________
Fill in the blank(s) with correct word