2) e. coli bacteria are used in many genetic studies because it reproduces itself every 20 minutes. it has been found that these bacteria can absorb genes from other dead, ground-up bacteria, a process known as transformation. dnase is an enzyme that destroys dna molecules by breaking bonds within the sugar-phosphate backbone of the double helix. proteases are an array of enzymes that destroy protein structure, and thus, function. in the experiment below, identify which test tubes will show transformation & justify your response. tube contents transformation (+ or -) justification 1 ground up e coli + living e coli 2 ground up e coli treated with dnase + living e coli 3 ground up e coli treated with proteases + living e coli 4 ground up e coli treated with dnase & proteases + living e coli

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e.g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

1)some people believe that certain drugs such as marijuana should be legalized. do you agree or disagree? 2)what impact might legalization have on forensic science as a field? which drug presents the greatest challenges to forensic science? why?

Gametes are cells. haploid diploid