If a cell has an increased need for a particular molecule that is already present in a higher concentration within the cell than in the extracellular fluid, the cell might use active transport, which usually moves molecules?

What is another term, one you'll find on an iPod, for amplitude

What was pangea and how do we know it existed?

The object represented by the graph is not in motion at A) 1 second. B) 4 seconds. C) 7 seconds. D) 11 seconds.

Oxygen and carbon dioxide pass through the plasma membrane by

According to Newton's third law of motion, which are equal? A. momentum and velocity B. collision time and stop time C. mass and momentum D. action force and reaction force

Prairie dogs are an example of A. an abiotic factor B. a producer C. a Keystone species

Ion channel gates close the pores of some ion channels in response to Select one: a. a change in electrical charge. b. stretching of the cell membrane. c. the binding of specific molecules to the channel. d. All of the above

Where would you find hydrogen bonds in proteins?

Of all the animals in the animal kingdom which one (s) would have the best chance for survival in mountains?

Erica and Jim are given a closed container of ice. They find the mass of the container and ice to be 28.0 grams. The container of ice is left on the lab table overnight. The next day, Erica and Jim observed the container. All of the ice had melted.