Cyanide binds to and blocks the action of cytochrome oxidase, which is the last cytochrome in the electron transfer chain and is required for its normal function. When inhibited by cyanide, all processes upstream in the cellular respiration process are inhibited. Given this information, what effect will cyanide poisoning have on human metabolic rate

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line