4)A student is creating a model of a eukaryotic cell to demonstrate their understanding of the organelles and their functions. The student has a battery for a power source, a rigid poster board for support, a light bulb that can blink on and shine light, and a Ziplock bag filled with water. Which statements are most appropriate to evaluate the use of these materials in the student's model? Select ALL that apply. A) The battery can represent the mitochondria, which powers the cell's activities. B) The Ziplock bag can represent the cell membrane, which is mostly a water-filled structure. C) The light bulb can represent the chloroplast, which uses light energy to perform photosynthesis. D) The rigid poster board can be the cell wall, since it can give structural support outside of the cell. E) The light bulb can represent the nucleus, since the nucleus transfers all of the energy from one part of the cell to another. and if awnser is right i will give brainliest

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject.a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher.wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners.acceptable only when the researcher’s irb grants a special waiver.

During the late 19th century, russia's settlement and development of siberia was made possible by the invention of the

Which principle do modern democracies share with ancient athens? a. all people deserve equal rights. b. there should be no taxation without representation. c. people should vote on all matters that concern them. d. people should have a voice in government.