BIO 201 COMPREHENSIVE TEST BANK COMPLETE QUESTIONS AND ANSWERS PRACTICE SOLUTION VERIFIED

BIO 201 COMPREHENSIVE TEST BANK
COMPLETE QUESTIONS AND ANSWERS
PRACTICE SOLUTION VERIFIED


◉ Rank the following levels of biological organization from the
lowest level of complexity to the highest level of complexity. Answer:
1. Oxygen atom
2. DNA molecule
3. Nerve cell
4. Nervous tissue
5. Brain
6. Fish
7. School of fish
8. Group of dolphins, fish, and algae
9. Pacific Ocean and inhabitants
10. Planet Earth


◉ Carbon has a total of __ e-, __ are in the valence shell and __ are in
the 1s orbital. Answer: 6,4,2


◉ Nitrogen has a total of __ e-, __ are in the valence shell and __ lie
in the p orbitals. Answer: 7,5,3

, ◉ Hydrogen has a total of __ e-, __ are in the valence shell and __ lie
in the p orbitals. Answer: 1,1,0


◉ They have the same number of electrons in their outermost shells..
Answer: Nitrogen and Phosphorous


◉ They have two electron shells. Answer: Carbon and Nitrogen


◉ Their outermost electron shell is full. Answer: Helium and Argon


◉ They have one electron shell. Answer: Hydrogen and Helium


◉ They have three electron shells. Answer: Sodium and Chlorine


◉ Covalent Bonds. Answer: -Strong chemical bond due to the sharing
of electrons.
-Bonds between hydrogen and oxygen atoms within a water molecule.


◉ Ionic bonds. Answer: -Electrons are transferred between two atoms
creating positively and negatively charged atoms, which are then
attracted to one another.
-Na+ + Cl- -> NaCl


◉ Hydrogen Bonds. Answer: -Bonds between charged molecules or
portions of a molecule