Zebra mussels, shown below, have recently been found in colorado lakes.

the mussels are not native to the lakes, and they have begun to kill native mussels by attaching to them and covering them up. the zebra mussels are
a pioneer species.
an invasive species.
a cooperative species.
a hybrid species.

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later. when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

Where does the information about where each transcription factor binds originate?

Which material is commonly used as a culture medium for living cells