The three distinct cell layers that form in an embryo are the ectoderm, ________ and ________.
Fill in the blank(s) with the appropriate word(s).
endoderm and mesoderm
The three distinct cell layers that form in an embryo are the ectoderm, mesoderm and endoderm.
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Viruses that kill bacterial host cells during each cycle of infection are called ____
a. virulent bacteriophages b. enveloped viruses c. temperate bacteriophages d. phages e. nonvirulent bacteriophages
What is the name for the gap into which neurotransmitters are released?
A. gap junction B. synaptic cleft C. postsynaptic membrane D. presynaptic membrane E. impulse channel
The suffix -oma means _____
Fill in the blank(s) with the appropriate word(s).
Genetic goitrous cretinism is caused by lack of the enzyme to synthesize ____________________
from phenylalanine. Fill in the blank(s) with the appropriate word(s).