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Bio 219 Exam 1: Questions/Solutions (Correctly Answered)
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Bio 219 Exam 1: Questions/Solutions (CorrectlyAnswered)
Which of these occurs when atoms share electrons? Right Ans - covalent
bonds
Which of these occurs when partial charges are created by unequal sharing of
electrons across a covalent bond? Right Ans - Hydrogen Bonds
Which of these is the strongest chemical interaction in living cells? Right
Ans - covalent bonds
Which type of chemical interaction is used to create the monomers of
macromolecules, like glucose? Right Ans - covalent bonds
Which of these would you use if you were trying to create flexible interactions
between molecules? Right Ans - Hydrogen Bonds
Hydrophobic Interactions
Ionic Interaction
True or False: Molecules and Organelles in the cell are static. They don't move
in 2D or 3D space. Right Ans - False
True or False: When molecules run into each other, the strength of their
interaction depends on the unique chemical composition and shape of each
molecule. Right Ans - True
Which of the following best describes the chemical reaction between
monomers to create a macromolecule? Right Ans - H + OH --> H2O
Carbohydrates have a common structure. Which of the following chemical
structures represents carbohydrates (sugars)? Right Ans - C6H12O6
Sickle cell anemia is a disease that predominantly affects red blood cells. Red
blood cells are similar to other cells, consistent with cell theory. Which of the
following is not true of all cells? Right Ans - All cells within the same
organism contain the same amount of proteins, membranes and sugars.
, Hemoglobin "carries" oxygen when oxygen binds to iron atoms that are
embedded in hemoglobin. How many covalent bonds can oxygen form? In
other words, what is the valence of oxygen? Right Ans - 2
Oxygen is "carried" by hemoglobin when the oxygen binds to an iron that sits
inside a large chemical group, known as porphyrin (shown below). This
chemical group contains many functional groups that allow it to bind within
the hemoglobin protein. Which of the following functional groups of the
porphyrin ring is shown inside the red box? Right Ans - methyl
Sickle Cell Anemia begins due to an error in a molecules that looks like this.
What kind of molecule is this: Right Ans - Nucleic Acid
Ultimately the first error causes an error in a molecule that looks like this.
What kind of molecule is this: Right Ans - Protein
Primary Structure Right Ans - A chain of amino acids held together by
covalent bonds
secondary structure Right Ans - A structure formed by hydrogen bonds
between backbone atoms (not side-chains!)
Tertiary Right Ans - Non-covalent interactions between the side-chains of
amino acids within the same primary structure
Quaternary Right Ans - Non-covalent interactions between the side-chains
of amino acids in different primary structures
Secondary structures protect __<1>__ atoms found in the __<2>__ part of the
protein, when they are folded into spaces that are more __<3>__. Right Ans -
1. Hydrophilic / polar
2. Backbone
3. Hydrophobic / non-polar
Complete this sentence using the options below: Secondary structures are
held together by __<4>__ between __<5>__ atoms of a protein. Right Ans - 4.
Hydrogen bonds
5. Backbone
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