Cells have methods for breaking down proteins and other molecules that are no longer needed. These can then be removed from the cell. Why is this waste removal necessary? A. Cells must remove waste in order to keep other cell processes functioning properly. B. The waste products are necessary for new cells to be made. C. Cells must remove waste because it is used to extract energy from food. D. The waste products are necessary for respiration and photosynthesis in other cells.

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

What is the equation for electrical work?

How many neutrons does plutonium -196 with an atomic number of 78.