Plants obtain nitrogen from the: A. soil B. atmosphere C. water table D. respiration of animals

Some proteins owe their functions to the three dimensional shape they have; what is responsible for holding the shape of a protein?

The overall direction of the major cold ocean currents is largely A) east to west. B) west to east. C) higher to lower latitudes. D) lower to higher latitudes.

What is Ph? Identify the pH range of strong acids and strong bases. Which has more hydrogen ions?

Do you think your model accurately demonstrates the water cycle

The body has several mechanisms to fight disease, one of which is sending chemical messengers. The messengers released by lymphocytes, monocytes, and macrophages have differing roles in the immune response.

Which of the following are atoms of the same element? Check all that apply. an atom with eight protons and seven electrons an atom with nine protons and seven electrons an atom with eight protons and eight electrons an atom with eight protons and no

What are the two reasons oxygen and carbon dioxide can move easily across the cell membrane?

Which component of blood is responsible for the formation of blood clots? a. all blood cells b. red blood cells c. myoglobin d. platelets e. white blood cells?

What will the majority of pathogens in food be killed by? a) antimicrobial secretions from the sebaceous glands in the skin b) mucus in the trachea c) acid in the stomach d) nose hairs

What can high levels of salt do to a plant