What was the most important adaptation of the reptiles and birds to life on land?
A. The impermeable egg
B. The shelled egg
C. The external egg
D. The amniotic egg
Answer: D
Biology & Microbiology
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In E. coli the enzyme responsible for creating unsaturated bonds from saturated ones in the fatty acids of the cell membrane is ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Water held behind a dam has a large amount of ________ energy
Fill in the blank(s) with correct word
Biology & Microbiology
Of the following, which group exhibits a diverse morphology, forming unicells, filaments, and sheets?
a. diatoms b. euglenoids c. green algae d. brown algae e. dinoflagellates
Biology & Microbiology
Which of the following is found in both archaeal and eukaryotic genomes?
A. chromatin fibers B. histones C. heterochromatin D. euchromatin E. nuclear envelope
Biology & Microbiology