BSC 1005 Test 2 miami dade college exam
questions with correct answers
Plasma membrane characteristics - VERIFIED ANSWER✔✔-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 - VERIFIED ANSWER✔✔-The polar heads are hydrophilic
Nonpolar tails are hydrophobic
Monomers and categories of polymers for carbohydrates, proteins, nucleic acids, and lipids - VERIFIED
ANSWER✔✔-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) - VERIFIED
ANSWER✔✔-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 - VERIFIED ANSWER✔✔-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
Function of all organelles - VERIFIED ANSWER✔✔-Nucleus
o Stores genetic information
o Chromatin—diffuse DNA, protein, some RNA
Prior to cell division, DNA compacts into chromosomes
o DNA organized into genes, which specify a protein
Relayed to ribosome using RNA
o Nuclear envelope—double membrane
Nuclear pores permit passage in and out
• Ribosomes
o Carry out protein synthesis in the cytoplasm
o Found in both prokaryotes and eukaryotes
o Receive RNA as instructions -sequence of amino acids in a polypeptide
o In eukaryotes,
Some ribosomes free in cytoplasm
Many attached to endoplasmic reticulum
questions with correct answers
Plasma membrane characteristics - VERIFIED ANSWER✔✔-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 - VERIFIED ANSWER✔✔-The polar heads are hydrophilic
Nonpolar tails are hydrophobic
Monomers and categories of polymers for carbohydrates, proteins, nucleic acids, and lipids - VERIFIED
ANSWER✔✔-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) - VERIFIED
ANSWER✔✔-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 - VERIFIED ANSWER✔✔-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
Function of all organelles - VERIFIED ANSWER✔✔-Nucleus
o Stores genetic information
o Chromatin—diffuse DNA, protein, some RNA
Prior to cell division, DNA compacts into chromosomes
o DNA organized into genes, which specify a protein
Relayed to ribosome using RNA
o Nuclear envelope—double membrane
Nuclear pores permit passage in and out
• Ribosomes
o Carry out protein synthesis in the cytoplasm
o Found in both prokaryotes and eukaryotes
o Receive RNA as instructions -sequence of amino acids in a polypeptide
o In eukaryotes,
Some ribosomes free in cytoplasm
Many attached to endoplasmic reticulum
