How many neutrons does the element sodium (Na) contain? a
12
b
11
c
13
d
23

Place the steps tor the formation of the enzyme pepsinogen in correct order

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.