Indicate which of the following statements is TRUE. Select all that apply. There are three phosphates between each sugar in a molecule of DNA. All organisms contain DNA that is roughly 25% A, 25% T, 25% G, and 25% C. There are two hydrogen bonds between AT pairs. Ribose sugars have a hydroxyl on the 2' carbon. A-, B-, and Z-form DNA are all right-handed helixes.

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

Will mark brainliest. (20 points) many have pigments structures known as eyespots that detect direction of light. a. b. archaebacteria c. protists d. none of the above