Which of the following occurs in meiosis? A The chromosomes are copied twice.
B One cell produces four cells.
C One cell produces two cells.
D The nucleus divides once.

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

Which term describes a normal value for something in the body? a. homeostasis b. set point c. feedback loop d. integration center