Which of the following best describes how a blood cell and skin cell have the exact same DNA sequence and yet look different and perform different functions? A. the t RNA uses a different sequence in each cell during transcription
B. The proteins are expressed differently in each cell
C. the cells mutate during transcription
D. the cells discard the DNA that is not in use

What happens when a magniseum ion ia atracked to a chlrene ion

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection