I know when haploid gametes fuse they combine to give a diploid set of chromosomes but I don't understand how for each homologous pair of chromosomes one of the homologous chromosomes comes from your mom and the other from your dad? Please explain.

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

Would really appreciate it, i have an idea but not completely sure

If water were a non polar molecule, how would its properties be different ? a.) water would be a much lighter molecule b.) water would be able to climb up inside plants c.)water would not be able to form hydrogen bonds d.) water would stick together much more strongly