Which of the following is an exergonic reaction? a. The conversion of one glucose molecule to two pyruvate molecules by glycolysis
b. The formation of ATP from ADP and Pi
c .The movement of a proton from the mitochondrial matrix to the intermembrane space
d. The transfer of electrons from O2 to NADH

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Modern whales developed their traits through natural selection what occurs during the process of natural selection