#Question id: 8860
#Unit 9. Diversity of Life Forms
A radially symmetrical animal that has two embryonic tissue layers probably belongs to which phylum?
#Question id: 1274
#Unit 4. Cell Communication and Cell Signaling
Which of the following are included as functions of the extracellular matrix?
a. supporting differentiation b. synthesis of procollagen
c. binding growth hormones d. filtering
#Question id: 15258
#Unit 2. Cellular Organization
#Question id: 13181
#Unit 10. Ecological Principles
#Question id: 3849
#Unit 3. Fundamental Processes
Which of the following is short 20 to 22-nucleotide single-stranded RNAs that block the expression of complementary or partially complementary mRNAs.