What kind of bond forms between two water molecules? A. ionic bonds
B. Nonpolar Covalent bond
C. Polar Covalent bond
D. Hydrogen bond

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast

If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy