I need help on this the first one is plant cell

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Why do metals "give up" their valence electrons?

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)