Which type of data is qualitative data?

heights in meters

volumes in milliliters

calculations of density

descriptions of behavior

What is the plasma membrane of a cell

What is the sac that must surround something before it can be actively transported across a membrane? A. Centrosome B. Chloroplast C. Ribosome D. Vesicle

If decomposers were added to an energy pyramid that contains producers, primary consumers, and secondary consumers, which trophic level or levels would be affected?

Which of the following is NOT one of the three major types of stimuli to trigger endocrine glands to manufacture and release their hormones? A. hormonal stimuli B. humoral stimuli C. permissive stimuli D. neural stimuli

Insect blood, properly called hemolymph, flows freely through the body cavity, but is moved from the abdomen to the head through what structure?

What is the purpose of plant epidermal cells?

What tool is use to measure an objects mass?

Which of the following statements about the electron transport chain is true? a. The proton gradient established during electron transport is a form of potential energy. b.

Which analogy best describes theories? Theories are like rocks because they can change but not easilly. Theories are like tides because they frequently go back and forth. Theories are like time because they are eternal and never change.

What happens at level IX on the mercalli scale?