Suppose a farmer wishes to evaluate a new fertilizer. Her hypothesis is that the new fertilizer will be more effective that her current one, and will result in healthier, taller plants. She uses the new fertilizer on her corn field (Field 1), while using her current fertilizer on her soybean field (Field 2). Both fields are the same size, have the same type of soil, and get roughly the same amount of water and sunlight. After the growing season, the farmer notes that indeed, the corn crop in Field 1 seems to be healthier than the soybean crop in Field 2. She concludes that the new fertilizer is far superior than the old one. Was the farmer's experiment an effective test of her hypothesis

one would be wind another would be water density

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

answer: b

coz red blood cells marrow and circulates the body for 120 days.

b) charles darwin i learned that last year!