Akinetes and hormogonia are specialized cells, found in some cyanobacteria, that facilitate nitrogen fixation
Indicate whether the statement is true or false.
Answer: FALSE
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Bacteria are grown in 15N (heavy) medium and then transferred to 14N (light) medium and allowed to replicate for 1 generation. The DNA is subsequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s)?
A. one heavy band B. one light band C. one half-heavy (intermediate to heavy and light) band D. one heavy and one half-heavy band E. one heavy and one light band
Crocodiles are living representatives of ____
a. anapsids b. archosaurs c. lepidosaurs d. synapsids e. dinosaurs
Based on the three cell model of global air circulation shown in the figure above, where would you be most likely to find a plant species that is very drought tolerant, but not cold tolerant?
A. Between 60° and 100° latitude B. Between 45° and 55° latitude C. Between 0° and 15° latitude D. Between 20° and 30° latitude
The sequence of the coding strand of a DNA molecule (that is, the DNA strand that contains the codons specifying the protein sequence) is 5'-CGGATGCTTA-3'. What is the sequence of the RNA made from this DNA?
a. 5'-UAAGCAUCCG-3' b. 5'-CGGAUGCUUA-3' c. 5'-AUUCGUAGGC-3' d. 5'-GCCUACGAAU-3' e. 5'-TAAGCATCCG-3'