What is the key characteristic that defines the Ecdysozoa clade?
a. The animal molts.
b. The animal is a deuterostome.
c. The animal has motile larvae.
d. The animal has bilateral symmetry.
e. The animal develops three tissue layers.
a
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Dynamic instability is the rapid growth and shrinkage of:
A. microfilaments. B. intermediate filaments. C. microtubules. D. Answers a and c are correct.
Addition of mitosis-promoting factor (MPF) to germinal cells in the skin arrested in G2 leads the cells to ____
a. stop dividing b. enter prophase c. undergo cytokinesis without mitosis d. die e. remain arrested in G2
If the DNA sequence is ATG-CGT, the mRNA codons are
a. AUG-CGU. b. ATG-CGT. c. UAC-GCA. d. UAG-CGU. e. GUA-CGU.
The removal or destruction of ALL forms of microbial life is called
A. sterilization. B. disinfection. C. pasteurization. D. sanitization.