Metals are pure electron carriers in the electron transport chain. What metal is the most common electron carrier?

Which pair of chromosomes determines sex in humans? a.15th b.1st c.23rd

When can exponential growth happen? a: when there are limited resources b: when carrying capacity is reachedc: when there is no competition d: when the death rate is high

Biology students used raw eggs in an experiment on tonicity and osmosis. the students put their eggs into vinegar to remove the shells. the vinegar was used to remove the shell from the raw egg. what other effect(s) did the vinegar have on the egg?