During the light-dependent reactions of photosynthesis, a constant supply of electrons is provided by

What provides instructions to a eukaryotic cell about living and growing?1. mitochondria2. nucleus3. plasmids4. dna

Some tissues, such as the mucosal surface of the gastrointestinal tract, have cells that are capable of cell division and serve as a reserve source for specialized cells. What term describes these specialized cells?

What type of cells undergo mitosis

If the humidity in the air has risen to 100% relative humidity and is still rising, but has not started to condense, what is one possible reason for this?

During times of dehydration, describe the movement of fluid from one compartment to another

What benefit would an improved muscle tone from strengthening the quadriceps femoris muscles provide?

What is a organism that makes their own food?

How many trophic levels are there in the following food chain? algae mosquito larvae dragonfly larvae - trout

If you were shipwrecked on the northwest shore of the sea of okhotsk, which of these physical regions would you most likely be closest to?

Why does the nucleus have a positive charge?