You perform a Kirby-Bauer assay with two antibiotics. Antibiotic X has a zone of inhibition of 3 mm. Antibiotic Y has a zone of inhibition of 5 mm. Which antibiotic is better at killing this particular microorganism?

A. Antibiotic Y
B. It is impossible to tell from the information given.
C. Antibiotic X and Y, which have identical antimicrobial activities
D. Antibiotic X

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan

Which organelle stores most of a cell’s dna?