1) Which of the following is a fundamental characteristic of all living things?

Question

1) Which of the following is a fundamental characteristic of all living things? A) Energy processing B) Regulation C) Reproduction and growth D) Evolution E) All of the above

2) What will all members of the domain Archaea and Bacteria have in common? A) All the organisms will be multicellular. B) They will all have a nucleus. C) They are eukaryotes. D) All the organisms will be unicelluar.

3) A sodium atom has an atomic number of 11 amu and an atomic mass of 23 amu

Sodium has ______ Protons, ______ neutrons, and ___________electrons

4) A covalent bond is bond in which. A) Electrons are removed from one atom and transferred to another so that the atoms become oppositely charged B) Electrons of two atoms are shared to satisfy the requirements of both atoms. C) Electrons between water molecules are shared, creating weak electrical bonds.

5) This type of bond is a chemical attraction between the oxygen of one water molecule and the hydrogen of another water molecule. A) Ionic B) Nonpolar C) Hydrogen D) Covalent

6) What is the term for atoms that are electrically charged as a result of gaining or losing electrons? for example, Na+ or CI- A) molecule B) ion C) isotope D) compound

7) A base ________. A) has a low pH number B) removes H2O molecules from a solution C) has a low concentration of H+ D) has a high concentration of H+

8) Lipids are generally: A) Hydrophobic and polar B) Hydrophillic and polar C) Hydrophobic and non-polar D) Hydrophillic and polar

9) When a protein has been unfolded enough to lse its function, the protein has been.. A) metastasized. B) distempered C) denatured D) hydrolyzed

10) What type of bond joins the monomers in a proteins's primary structure? A)Hydrophobic B) peptide C) ionic D) S-S E) Hydrogen

11) Large proteins, like DNA polymerase and hemoglobin, are often composed of several polypeptides that are linked together. The ____ level of protein structure descruves how the two or more polypeptides are joined to create a larger complex. A) primary structure B) secondary structure C) tertiary structure D) quaternary structure

12) What are the parts of a nucleotide? A) a nitrogenous base and a phosphate group B) a nitrogenous base and a 5 sugar C) a nitrogenous base, a phosphate group, and a 5-carbon sugar D) a phosphate group and an adenine or uracil E) a 5- carbon sugar and a purine or pyrimidine.

Explanation / Answer

1. C

2. D

3. Protons-11, Neutrons-12, & Electrons-11

4. B

5. C

6. B

7. C

8. C

9. C

10. B

11. D

12. C

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