The independent variable in an experiment is

OA) the same in every experiment

OB) the variable scientists observe for changes

O C) the variable that is changed by the scientist

OD) the thing that is kept constant during the experim

Name the scientists who proposed the cell theory

Both DNA and RNA are made up of sugars, but what is the difference?

Which three elements are found in all fats and oils

A woman in active labor arrives at the birthing unit. she tells the nurse that she was told that she had a chlamydial infection the last time she visited the clinic; however, she stopped taking the antibiotic after 3 days because she "felt better.

Supera ntigens areA. body tissues that the immune system mistakes as foreign. B. cell markers found in some member of a species but not in other members-C. bacterial toxins that activate T cells at a 100 times greater rate than other antigens. D.

What can happen when earth materials overcome the force of friction holding them together? A. a flood B. a landslide C. erosion D. wildfire

The Sun's gravity pulls the Earth toward it and keeps it from floating away into space. What keeps the Earth from being pulled into the Sun? A) the Sun's gravity B) the Moon's gravity C) the Earth's gravity D) the Earth's sideways motion

A nurse is in the dining room and overhears a new nurse tell a client with body dysmorphic disorder that she's much too thin and must eat more before she can go home. the client bursts into tears and runs out of the dining room.

Meiosis is responsible for

Which of the following examples illustrates a pivot joint in use? A. you wind up to pitch a baseball B. you wave good bye to your friend C. you kick a football D. you look behind you