Photosynthesis is an endothermic reaction because. . a- the products of the reaction contains more energy than the reactants b- the reaction causes a transfer of energy into the surroundings by heating c- the reaction requires light to transfer energy to the reactants d- the reactants contain more energy than the products of the reaction

Which muscle is responsible for inhalation ?

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.