SAT Subject Biology Practice Question 328: Answer and Explanation
18. Three different cell types were observed under the microscope. The observations are summarized in Table 1.
The three cell types were grown in separate cultures with plenty of oxygen and nutrients available. Figure 1 shows their rates of growth. At Time 1, oxygen was no longer available to the cells.
Based on the information in Table 1, which of the following is the most likely classification of cell Type A ?
Correct Answer: C
C Cell Type A has no nucleus. The only organisms that do not have nuclei are bacteria (Domains Bacteria and Archaea).