Base your answer on the diagram below which represents a portion of a double-stranded DNA molecule and on your knowledge of biology.

The Symbol labeled 3 represents a molecule of a

A) 5-carbon sugar
B) 6-carbon sugar
C) 3-carbon sugar
D) 4-carbon sugar

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.