Final answer:
Without visual confirmation of the cell's characteristics under the microscope, it's impossible to determine the stage of the cell cycle for Karla's picture. To deduce if the cell is in mitosis, one must observe the cell through the stages of prophase, metaphase, anaphase, and telophase, with metaphase being characterized by the alignment of chromosomes in the cell's center.
Step-by-step explanation:
When Karla takes a picture of a cell under a microscope and inquires if the cell is undergoing mitosis, her classmate would need to look for certain characteristics to answer her question accurately. If the cell displays condensed chromosomes aligned in the center of the cell, it would be indicative of metaphase. However, without knowing what the cell in question looks like, providing a correct answer is not possible. Referencing the order of events in mitosis, the correct sequence is prophase, prometaphase, metaphase, anaphase, and telophase, followed by cytokinesis.
If the cell shows signs of chromosomes lining up in the center, it indicates metaphase. If the cell is not in mitosis, it could be in interphase or the S-phase, the latter indicating DNA replication. The stages of interphase are G1 (growth and preparation for DNA replication), S-phase (DNA replication), and G2 (preparation for mitosis).