If we calculated two means, graphed them and found that the means differ numerically, how could we know whether their difference is significant? This is especially important when comparing a control to an experimental group. Standard error bars can be added on both sides. In general, the greater the degree of error bar overlap the less a chance of a significant result. A non-significance result would mean that statistically there is not difference between the two means. If there is an overlap between the error bar of one mean and the mean of the compared mean, then it is not likely the means are significantly different. If error bars slightly overlap, significance might have to be additionally verified by a t-test. If error bars do not overlap at all, the results may be considered significant. Also, as sample size decreases the more error should be reported. So as a general rule if the sample size is large then +/- 1 SEM bars would be added. If your sample size is small (<30 samples), using 95% CI (~2xSEM) is preferred.

What is the best-known carbohydrate?

Interpret the model. a three-part model with black right-arrows between the parts. left part: a large green apple-shaped component with a w-shaped indentation centered on top. a small blue apple-slice shape sits above the left indentation and an arrow points from the shape to the indentation. a small purple apple-slice shape and arrow sit above the right indentation and an arrow points from the shape to the indentation. middle part: a large green apple-shaped component with a square indentation centered on top. sitting in the left side of the indentation is a blue apple-slice shape with a flat bottom, fused to a purple apple-slice shape with a flat bottom on the right side of the indentation. right part: a large green apple-shaped component with a w-shaped indentation centered on top. an up-arrow is centered above the indentation pointing to a fused blue and purple apple-slice-shaped flat-bottom component sitting above the indentation. assigne "true" or "false" to the end of each statement. the model shows a shape change occurring in the enzyme after the substrate is bound in the active site. t/fthere are two products in this model. t? f there are three substrates in this model. t/f the model shows two different enzymes. t/f

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration