This worksheet will you organize your thoughts for the discussion. write down some notes based on the questions and prompts below.

topic 1: the experiment
1. write down a brief summary of the main steps you took in the procedure. be sure to include any adjustments you made to the procedure and why you made them.

2. what step makes or breaks the results in this procedure? the answer should include a discussion of the importance of carefully reading dna codons.

topic 2: the concepts
3. what did this lab teach you about the different types of dna mutations?

4. in this experiment, you modeled and researched the effects of dna mutations. would you say most dna mutations are negative, positive, or neutral (neither negative nor positive)? justify your answer.

5. what about dna mutations would you like to understand better? state a question that you would like to research the answer to.

What do science, technology, and disease have to do with each other?

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

How is the carbon cycle related to global warming ?