When does the cell have to use active transport?

A. when the cell is low on energy

B. when the cell is in a highly concentrated solution

C. to move molecules across the membrane quickly

D. to move molecules across the membrane against a gradient

Which best describes how the cytoplasm interacts with other organisms in the cell to maintain homeostasis

Which of the following structures represents the Sporophyte stage of the b bryophytes?

What physical properties are shared by most metals?

Suppose you double the length, height, and width of a cube by how many times does the volume of the cube increase?

Megan is performing an experiment in her biology lab. She drops a glass pipette full of an unknown substance on the ground. The pipette breaks and the substance spills on the floor. What should Megan do immediately after she drops the pipette?

The place where reactants bind to an enzyme during a reaction is called the

Interactions between actin and myosin filaments of the sarcomere are responsible for

What is the name for an organized group of cells that work togethe?

Matching pairs of chromosomes from the parents are called

What is the thick, tough tissue surrounding plant cells