21.is the loss of electrons from one substance, while is the addition of electrons to the other substance?

A. Reduction / Oxidation

B. Reduction / Digestion

C. Digestion / Breakdown

D. Oxidation / Reduction

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only