Iwill give 20 points scientists have determined that the oldest fossils, representing earth’s earliest life-forms, are 3.5 billion years old. which description of these life-forms is accurate? a. reddish eukaryotic cells b. blue-green photosynthetic bacteria c. orange-colored protists d. multicellular organisms, mostly blue in color

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.

How does a noncompetitive inhibitor reduce an enzyme’s activity?