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It has been proposed that mitochondria and chloroplasts are modern descendants of early prokaryotic cells that began to reside and gradually evolve within primitive cells. Which statement supports this view?
A simplified model of a plant cell is shown here. The cell, as it is shown here, would be unable to perform which cellular process due to a missing organelle?
skin:human body as _____:cell
Which word completes the analogy?
out their mission of serving meals to students every day, school cafeterias perform some of the same functions that cells do. Delivery trucks bring milk, bread, vegetables, and other raw materials to the cafeteria. Cooks combine the delivered food into different meals for students to eat. Students empty uneaten food and other wastes into trash cans for storage until the wastes can be removed.
Which combination of cell structures BEST compare in their functions to the activities of the school cafeteria in their use of delivery trucks, cooks, and trash cans?
A diagram of an animal cell is shown with several parts labeled as A, B, C, and D.
Which statement BEST compares the functions of Parts C and D?
What process must cells undergo prior to division?
Sarah is working on an analogy for the organization of the human body for her Life Science Project. She is using housing materials to make an analogy as shown in the table, but is confused on how to proceed with the comparison.
Which of the following tables can Sara use for her project?
What is a group of connected cells that have similar function?
Place the following levels of biological organization in the proper order, from smallest to largest. 1) Macromolecule 2) Tissue 3) Organ System 4) Organ 5) Cell
Based on the organization of living things, how could we classify the pollen produced by this flower?
This image shows how each of the three different types of human muscle cells appear under a light microscope. Which statement BEST summarizes why these human muscle cell types look different?
Volvox, the green algae illustrated here, is considered a colony. Yet some scientists argue that it is more like a multicellular life form. In order for a cell or group of cells to evolve into a multicellular organism, all BUT one of these events must occur. That is
Anita develops a model to show the levels of organization of a cat. What level of organization should be the focus of treatment if the cat was born with a disorder in the organ pictured?
It is hot outside. You start sweating. In this case, the hot weather is the...
Green plants produce their own food through the process of photosynthesis is an example showing
When you step out into the cold, your body shivers in order to keep its temperature at 98.6oF. is an example showing
A caterpillar hibernates in a cocoon and emerges as a butterfly is an example showing
The following list represents characteristics of a living thing :
