Cell membranes contain channels that allow ions to cross the phospholipid bilayer. suppose that a particular potassium channel carries a current of 2.0 pa. how many potassium ions (k) pass through it in 1.0 ms

How do atoms of metallic elements bond

What is the purpose of the hydrologic cycle

Which part of the electromagnetic Spectrum is nearest to X-rays? microwaves infrared light gamma rays radio waves

Car A has a mass of 1,200 kg and is traveling at a rate of 22 km/hr. It collides with car B. Car B has a mass of 1,900 kg and is traveling in the same direction at 25 km/hr.

How can the difference in the brightness of spectral lines be explained?

Is a lung a living organism, why or why not?

A wire carries a steady current of 2.20 A. A straight section of the wire is 0.750 m long and lies along the y axis within a uniform magnetic field, vector B = 1.70 k T.

A 5.00-kg howler monkey is swinging due east on a vine. It overtakes and grabs onto a 6.00-kg monkey also moving east on a second vine. The first monkey is moving at 10.0 m/s at the instant it grabs the second, which is moving at 7.00 m/s.

One of the heating systems we talked about in this course comprises of a system of ducts. What is the process by which heat is transferred in this system? a. Conduction b. Convection c. Radiation d. None of the above

If the north pole of a magnet in a compass is attracted to Earth's geographic north, what must be the polarity of Earth's magnetic north pole? A. north B. south C. It can't be determined from the information given.