The nucleus is made up of
a) protons and electrons
b) electrons and neutrons
c) protons and neutrons
d) protons, neutrons, and electrons
Ans: c) protons and neutrons
You might also like to view...
Filamentous organisms such as Sphaerotilus and Thiothrix can lower the efficiency of activated sludge processes by causing ________.
A. building sludge B. acidified sludge C. bulking sludge D. anaerobic sludge
In controlled experiments:
a. all variables are independent of each other. b. all critical variables are manipulated. c. all variables are dependent on each other. d. one variable is manipulated while others are held constant. e. all variables are held constant.
A chemical that affects neuronal function but is not stored in presynaptic vesicles is _____
A) acetylcholine B) epinephrine C) nitric oxide D) gamma-aminobutyric acid (GABA)
Which of the following is defined as "all of the various species living in the same area?"
Community Ecosystem Population Organism