BSC 1005 Test 2 miami dade college Questions and Answers
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Course
BSC 1005 miami dade college
Institution
BSC 1005 Miami Dade College
what is the function of the plasma membrane? - ️️1) separates cell from external
environment
2) regulates transport of molecules
Plasma membrane characteristics - ️️Marks boundary between outside and inside
of a cell
• Regulates passage in and out of a cell
• Phospholipid bilayer ...
BSC 1005 Test 2 miami dade college
what is the function of the plasma membrane? - ✔️✔️1) separates cell from external
environment
2) regulates transport of molecules
Plasma membrane characteristics - ✔️✔️Marks boundary between outside and inside
of a cell
• Regulates passage in and out of a cell
• Phospholipid bilayer with embedded proteins
o Polar heads (hydrophilic) of phospholipids face into watery medium
o Nonpolar tails (hydrophobic) face each other
Hydrophobic vs. Hydrophilic - ✔️✔️The polar heads are hydrophilic
Nonpolar tails are hydrophobic
Monomers and categories of polymers for carbohydrates, proteins, nucleic acids, and
lipids - ✔️✔️Monomers are subunits
• Polymers for Carbohydrates are: monosaccharides, disaccharides, polysaccharides
• Polymers for Lipids are: fatty acids, phospholipids, and steroids
• Polymers for Proteins are: amino acids
• Polymers for Nucleic Acids are: DNA and RNA
Functions of carbohydrates , proteins, nucleic acids, and lipids (and each subcategory) -
✔️✔️Carbohydrates
o Almost universally used as immediate energy source in living things
o Play structural roles
• Lipids
o Fats and oils used for long-term energy storage
o Phospholipids form the bulk of the plasma membrane
• Proteins
o Many functions: support, metabolism, transport, defense, regulation, and motion
• Nucleic Acids
o DNA stores genetic information
o RNA helps make proteins
Prokaryote vs Eukaryote Cell - ✔️✔️Prokaryote
o Lack membrane bound nucleus
o Organisms from the domains Bacteria and Archaea
o Generally smaller and simpler in structure than eukaryotic cells
• Eukaryote
o Protists, fungi, plants, and animals
o Have a membrane-bounded nucleus housing DNA
o Much larger than prokaryotic cells
o Contain organe
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