The movement of substances through the cell membrane without the use of cellular energy

What is the difference in the beginning between primary succession amd secondary succession

A permineralized piece of wood

Many arthropod young do not like adults and do not eat the same food as adults. how would this be an advantage in an environment where food is scarce

Why is less force needed to keep an object moving than to start the object in motion?

DNA replication a. occurs through the addition of nucleotides to the end of the DNA molecule. b. results in the formation of four new DNA strands. c. produces two daughter DNA molecules that are complementary to each other. d.

A mutation may be passed along to human offspring through what

If the concentration of water was higher inside a plant cell than outside the cell, what would the water do? A. It would move out of the cell. B. It would move into the cell. C. It would cause the cell to burst. D. It would move into the vacuole.

8. How do paleontologists use the fossil record to learn about relationships among groups of organisms?

Describe the process of meiosis that ensures that both maternal and paternal chromosomes are passed on to each spermatozoon

What steps does a doctor take before making a hypothesis?