Unit Test Answers

Which organelle can be compared to a security guard who decides whom may enter a building and whom may not?

Two cells in the same organism differ only in the number of chloroplasts they contain. The first cell has multiple chloroplasts, and the second cell has very few. What would most likely characterize these cells?

The table lists some organelles and functions. Only one pair is correctly matched.Functions of OrganellesOrganelleFunctionLysosomeStores water and waste materialsVacuoleBreaks down sugarsMitochondrion Breaks down waste materials and debrisRibosomeProduces proteins for the cellWhich organelle in the table is correctly matched with its function?

According to the endosymbiotic theory, which cellular process was involved in the evolution of mitochondria and chloroplasts?

Which homeostatic process is characterized by the diffusion of only water molecules?

Which organelles are not found in plant cells?

Which microscope uses a probe to map atoms on the surface of a specimen?

The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.Based on the data in the graph, which would most likely happen if the paramecium were placed in distilled water?

Consider the plant cells in the image below.Which is a function of the cell structure that is labeled X?

The concentration of sodium on the inside of the cell is 20 mM. The outside of the cell has a sodium concentration of 115 mM. Which mechanism of ion uptake would best move sodium from the inside of the cell to the outside?

A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?

What is the maximum magnification of most classroom compound light microscopes?

Which structure will form when a primitive cell engulfs an aerobic bacterium?

The table lists some organelles and functions. Only one pair is correctly matched.Functions of OrganellesOrganelleFunctionNucleusDirects cell activityEndoplasmic reticulumBreaks down sugar molecules to supply energyGolgi apparatusSupports and protects organelles in the cellLysosomeProduces proteins for the cellWhich organelle in the table is correctly matched with its function?

What is shown in the image?