Which of the following could be considered a habitat island?
A. a person in line at the train station
B. a lake surrounded by trees
C. a patch of moss on a tree trunk
D. All of the answer options are correct.
E. None of the answer options is correct.
D
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In which organism is a beta-barrel folding domain most likely to be found?
A. Homo sapiens B. Drosophila melanogaster C. Escherichia coli D. Caenorhabditis elegans E. Saccharomyces cerevisiae
The DNA molecule usually is made up of how many strands?
a. 1 b. 2 c. 3 d. 6 e. 12
The shape of a virus is determined by
its DNA. its RNA. its envelope. its host. its coat protein organization
In a cilium or flagellum, _______microtubules are arranged _______.
a. 13; in a circle b. 9 triplet; in a circle c. 9 doublet; in a circle around a central pair of microtubules d. 2 microtubules; perpendicular to each other e. 2 microtubules; parallel to each other