Zebras adapted stripes to make them harder to predators to see, and to avoid flies in the Savanna. Lions evolved better color vision due to the black and white striped
pattern of zebras on the Savanna. This allowed them to better see the zebras against
the brown Savanna grasses.
Which term describes the type of evolution described above?
O convergent evolution
O divergent evolution
coevolution
adaptive radiation

Which image shows labeled organelles that are present only in plant cells?

When are the centromeres broken in meiosis?

Penicillin is hydrolyzed and thereby rendered inactive by penicillinase (also known as β-lactamase), an enzyme present in some resistant bacteria. the mass of this enzyme in staphylococcus aureus is 29.6 kd. the amount of penicillin hydrolyzed in 1 minute in a 10-ml solution containing 10-9 g of purified penicillinase was measured as a function of the concentration of penicillin. assume that the concentration of penicillin does not change appreciably during the assay. penicillin(μm) amount hydrolyzed(nmol) 1 0.11 3 0.25 5 0.34 10 0.45 30 0.58 50 0.61 (a) plot v0 versus [s] and 1/v0 versus 1/[s] for these data. does penicillinase appear to obey michaelis-menten kinetics? if so, what is the value of km? (b) what is the value of vmax? (c) what is the turnover number of penicillinase under these experimental conditions? assume one active site per enzyme molecule.