The movement of substances across a cell membrane from an area of lower concentration to an area of higher concentration, which requires cellular energy & a carrier protein is called:

During photosynthesis, light energy becomes what?

Who is responsible of enforcing an environmental law after a legislature passes it? a. the legislature b. president or prime minister c. a regulatory agency d. citizens

The classification of species is what

The fundamental resolution of an optical instrument is set by

Which condition of ocean water varies with location and seasons

Sandy experimented with the placement of the straw and the balloon while making this air powered toy car. He taped the straw and balloon to face toward the right. He told Tim that his toy will travel to the right. Tim said that Sandy was wrong.

You are a biomedical researcher who is interested in designing a drug to increase bone density. You have decided you can take one of two approaches: (1) design a drug that stimulates bone to be built faster, or (2) design a drug that prevents bone

Why rinse peas in disinfectant

One of the first scientists to propose that species change over time was a. Charles Darwin. b. Charles Lyell. c. Jean Baptiste Lamarck. d. Alfred Russel Wallace

The nurse is monitoring a diabetic client with a blood glucose level of 400 mg/dl (22.2 mmol/l). which clinical manifestation would indicate diabetic ketoacidosis (dka) ?