Which is the best definition for density? a. the amount of space an object takes up. b. the amount of mass in a given space. c. the measure of the force of gravity on an object.

Is dna a nucleic acid

if the strand of DNA with the sequence TTA mutated to TTG, would this be a silent or missense mutation

Underwater, we humans can't compete with whales and other air-breathing marine mammals, which can stay submerged for extended periods.

What instrument was necessary before the cell theory could be developed?

Which choice best describes the phosphorus cycle? A: Movement of phosphorus between the atmosphere and land. B: Movement of phosphorus in the atmosphere. C: Movement of phosphorus between land, ocean and living organisms.

Which of the following statements about the cells of any multicellular organism is true? Almost all of the cells have the exact same DNA. The same genes are expressed in each cell. Each cell has completely different DNA.

A potassium-retaining diuretic is prescribed for a client with heart failure. which foods should the nurse instruct the client to avoid?

Which part of a plant is found in the center

How does irradiation effect tomatoes

Which of the following is a cost of urban development? A. Entertainment B. Biodiversity loss C. Cultural centers D. Employment