When the neuron is at rest; which ion is found at a higher level OUTSIDE the cell?
Sodium
Potassium
Sugar
Chloride

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a