BIOD 171 Final Exam Study Guide Questions and Answers
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Course
BIOD 171
Institution
BIOD 171
BIOD 171 Final Exam Study Guide
Questions and Answers
What is microbiology the study of? - Ans:-microbes and their biological processes
What is the smallest biological unit of life? - Ans:-cell
What are the characteristics of life? - Ans:-movement, responsiveness, growth, reproduction,
metabol...
Can viruses be classified as either prokaryotic or eukaryotic? - Ans:✔✔-No they are not considered living
because
What is the lipid bilayer of the plasma membrane composed of? - Ans:✔✔-polar hydrophilic (water
loving) head group and a non-polar hydrophobic (water fearing) tail region
-hydrophobic tail faces inward and and polar head interacts with water outside and inside the cell
What are the primary cellular organelles and their roles? - Ans:✔✔-Ribosomes (protein synthesis), ER
(site of protein synthesis), Golgi (protein modification and distribution), lysosomes (waste disposal),
mitochondria (ATP generation) and chloroplasts (plants only; site of photosynthesis).
Proteins are formed from various combinations of ______ of which there are ____ known forms -
Ans:✔✔-amino acids, 20
What is an essential amino acid? - Ans:✔✔-An essential amino acid cannot be produced by the human
body and as such must be take in from the environment through alternative sources (i.e) food.
What do eukaryotic cell membranes have that prokaryotic cell membranes don't? - Ans:✔✔-sterol lipids
(ex: cholesterol)
Functions of plasma membrane? - Ans:✔✔-Proteins in membrane allow the import of nutrients or
export of molecules (wastes, signaling molecules)
Protein sensors receive information about the environment or messages from other cells
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