A student is using a microscope to observe samples taken from pond water. She notices something that she thinks may be a living thing. How can she tell for sure that it is living? (DOK 3)

A scientist is observing a figure under the microscope that appears to be alive, however she is not sure. What argument could the scientist make to prove that the object that she is observing under the microscope is alive? (DOK 2)

Specimen Reproduces Energy Use Growth Genetic Material A Yes Yes Yes Yes B Yes No No Yes Refer to the data table above. What additional information would best support an argument that Specimen A is living and Specimen B is not living? (DOK 2)

A scientist is examining slides of cells from organisms in different groups. What two features would the scientist use to distinguish a plant cell from an animal cell? (DOK 1)

Use the passage to answer the question that follows: On a train, the conductor controls the speed of the train and decides when and where it stops. The train doors allow passengers and materials to get in and out of the train. The dining car makes food for the passengers. The luggage car stores luggage, freight, and other materials. The locomotive engine provides power for the train to run. If you were asked in science class to use this analogy of a train to create a model that shows how the parts of a train are analogous to the parts of a cell, you would say that the conductor is analogous to which part of the cell? (DOK 2)

A student in science class is asked to sketch a basic model of an animal cell using only three essential features. The student must select the most crucial organelles to draw for a new student to understand the basic structure of an animal cell. Which of the following structures would be best to include in this basic model? (DOK 2)

A student has collected samples of cells from the leaves, stem, and roots of a plant. The student examines each of the samples under a microscope. The student then creates models of the cells from each sample (leaf, stem, root) including labeled structures with accompanying functions. Which of the following correctly identifies and supports how the cell models created by the student might differ from each other? (DOK 2)