1. INTRODUCTION TO BACTERIAL DIVERSITY EXPERIMENT For this assignment you will be working with a simple set of example data. In this experiment you and your lab group have sampled bacterial abundance from various locations around campus. You have a total of 100 agar plates for bacterial growth so you split them into sets of 50, enough for two treatments to compare. Your group decides to compare the bacterial abundance of door handles exiting classrooms to the door handles exiting restrooms, you sample 50 different handles of each kind. You propose that the bacterial abundance of bathrooms will be higher due to the restroom having a higher potential for urine and fecal contamination. A. What is the hypothesis you are testing in this experiment

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interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle