1. An investigation was performed to determine the rate of oxygen released from the decomposition (breakdown) of hydrogen peroxide by the human enzyme catalase. The investigation was performed at two different temperatures; the data is presented in the table below. Normal human body temperature is 37 ⁰C. The graph shows the results. Which statement about the enzyme is supported by the graph? *Catalase is an enzyme made up of many polypeptide chains
*Catalase decomposes hydrogen peroxide over time
*Catalase is a human enzyme
*Catalase becomes less effective in temperatures below 37 ⁰C.

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Regarding most of the narrator’s story, which word best describes the tone?

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.