Chloe reads that given the correct conditions, cuttings from certain plants will form roots along the stem, enabling a new plant— identical to the parent plant—to grow. Chloe wants to investigate whether rooting hormone is beneficial or detrimental in this process. She takes cuttings from a shrub. For Group 1, she places some shrub cuttings in potting soil in partial shade. For Group 2, she dips some shrub cuttings in rooting hormone, places them in potting soil, covers them with a clear dome, and places them in direct sunlight. She waters the groups equally. She pulls up some cuttings after 3 days and again at 6 and 9 days to observe and measure root growth. All of the cuttings in Group 2 died, while the cuttings in Group 1 grew taller and developed roots. Chloe concludes that the root hormone was harmful to the cuttings. How do you evaluate Chloe's experimental design? What improvement would you suggest?

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.

Choose the diagram that best represents a habitat corridor explain your choice.

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.