BIO-320: Cell Biology Exam 1 Study Questions and Answers
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Course
BIO 320
Institution
BIO 320
BIO-320: Cell Biology Exam 1 Study
Questions and Answers
What is a cell? - ANSWER-Cells are the basic unit of biology that make up every organism on Earth.
Cells are diverse and dynamic.
What is the Cell Theory? - ANSWER-1. All living organisms are composed of one or more cells.
2. A cell is t...
B-sheets are made of beta strands connected laterally by 2 more hydrogen bonds forming a backbone.
When are R-groups involved in the protein structure? - ANSWER✔✔-The overall three-dimensional
structure of a polypeptide is called its tertiary structure. The tertiary structure is primarily due to
interactions between the R groups of the amino acids that make up the protein.
What causes secondary structure in protein structure? - ANSWER✔✔-The secondary structure arises
from the hydrogen bonds formed between atoms of the polypeptide backbone. The hydrogen bonds
form between the partially negative oxygen atom and the partially positive nitrogen atom.
What are the four types of bonds/interactions that create folding in tertiary structure? - ANSWER✔✔-1.
Disulfide bonds
2. Hydrogen bonds
3. Ionic bonds
4. Van der waals/hydrophobic interactions
What happens in quaternary structure? - ANSWER✔✔-Multiple polypeptides fit together to form one
protein.
What are some major categories of proteins? - ANSWER✔✔-1. Enzymes - selective catalysis.
2. Structural Proteins - support of cellular structures.
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