A type of cellular transport is shown. Which description best identifies this type of cellular transport? Your A. Osmosis, because energy is being used to move molecules with the concentration gradient. B. Active transport, because energy is being used to move molecules against the concentration gradient. C. Facilitated diffusion, because energy is being used to move molecules with the concentration gradient.

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?