Which lineage includes living members associated with adaptations such as squalene, spiral valve, electroreceptors, lateral line system, and claspers?
a. Actinopterygii
b. Petromyzontoidea
c. Chondrichthyes
d. Sarcopterygii
Ans: c. Chondrichthyes
Biology & Microbiology
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Which of the following is mismatched with regard to similar excellular structures in plant and animal cells?
A) elastins-extensins B) extracellular matrix-cell wall C) collagens-cellulose D) proteoglycans-hemicelluloses E) fibronectins-pectins
Biology & Microbiology
Science is based on the assumption that nature behaves in a ________ and ________ manner.
Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
You would expect the Hox genes of a mosquito and a rabbit to be very _________
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The smallest subatomic particle is the ________.
A. neutron B. isotope C. electron D. proton E. ion
Biology & Microbiology