BIOL 1027 STUDY CORRECT ANSWERS AND
QUESTIONS SET A+
✔✔Cis unsaturated fats - ✔✔- Hydrogen bonds on *same side* of the double bond
- Have a kink, causing them to be packed more loosely
- Lower melting point
- Liquid at room temperature
✔✔trans-unsaturated fats - ✔✔- Hydrogen bonds on *different sides* of double bond
- No kink so more tightly packed
- Higher melting point
- Solid at room temp
- Can cause health risks for humans
✔✔Vegetable oils creates ___________ fats with ______ double bonds -
✔✔unsaturated; trans
✔✔what may contribute more to heart disease? - ✔✔trans fats
✔✔Steroids are defined as - ✔✔four-ringed hydrophobic molecules
✔✔Which biological molecule does not polymerize? - ✔✔lipids
✔✔List some functions of proteins - ✔✔structural support
storage
transport cellular communications
movement
defense against foreign substances
✔✔What accounts for more than 50% of the dry mass of most cells? - ✔✔Proteins
✔✔Give an example of an enzyme - ✔✔sucrase
✔✔Give an example of amino acid storage - ✔✔albumin (in egg whites), casein (in milk)
, ✔✔Give an example of a hormone - ✔✔insulin
✔✔Give an example of contractile/motor function - ✔✔actin/myosin
✔✔Give an example of the defense function - ✔✔antibodies
✔✔Give an example of the transport function - ✔✔aquaporins (water channels)
✔✔Give an example of receptor function - ✔✔acetylcholine receptor (membrane
protein)
✔✔Give an example of structure function - ✔✔keratin
✔✔Enzymes are - ✔✔biological catalysts; agents that speed up cellular reactions
✔✔most enzymes end in - ✔✔-ase and begin with the name of the molecule they act
upon
✔✔In sucrose, glucose and fructose are the - ✔✔products
✔✔What is the enzyme in sucrose - ✔✔sucrase
✔✔Sucrose is an example of a(n) - ✔✔enzyme
✔✔What are polypeptides? - ✔✔unbranched polymers built from the same set of 20
amino acids
✔✔A _________ is a biologically functional molecule that consists of more polypeptides
- ✔✔protein
✔✔What is the monomer of protein? - ✔✔amino acid
✔✔Amino acids are made up of - ✔✔Amino group, alpha carbon, carboxyl group, and
an R group
✔✔amino acids have __ variations that substitute for R - ✔✔20
✔✔Amino acids differ in properties due to - ✔✔differing side chains (R groups)
✔✔List the 3 categories of amino acids - ✔✔Polar R groups
Nonpolar R groups
Charged R groups
QUESTIONS SET A+
✔✔Cis unsaturated fats - ✔✔- Hydrogen bonds on *same side* of the double bond
- Have a kink, causing them to be packed more loosely
- Lower melting point
- Liquid at room temperature
✔✔trans-unsaturated fats - ✔✔- Hydrogen bonds on *different sides* of double bond
- No kink so more tightly packed
- Higher melting point
- Solid at room temp
- Can cause health risks for humans
✔✔Vegetable oils creates ___________ fats with ______ double bonds -
✔✔unsaturated; trans
✔✔what may contribute more to heart disease? - ✔✔trans fats
✔✔Steroids are defined as - ✔✔four-ringed hydrophobic molecules
✔✔Which biological molecule does not polymerize? - ✔✔lipids
✔✔List some functions of proteins - ✔✔structural support
storage
transport cellular communications
movement
defense against foreign substances
✔✔What accounts for more than 50% of the dry mass of most cells? - ✔✔Proteins
✔✔Give an example of an enzyme - ✔✔sucrase
✔✔Give an example of amino acid storage - ✔✔albumin (in egg whites), casein (in milk)
, ✔✔Give an example of a hormone - ✔✔insulin
✔✔Give an example of contractile/motor function - ✔✔actin/myosin
✔✔Give an example of the defense function - ✔✔antibodies
✔✔Give an example of the transport function - ✔✔aquaporins (water channels)
✔✔Give an example of receptor function - ✔✔acetylcholine receptor (membrane
protein)
✔✔Give an example of structure function - ✔✔keratin
✔✔Enzymes are - ✔✔biological catalysts; agents that speed up cellular reactions
✔✔most enzymes end in - ✔✔-ase and begin with the name of the molecule they act
upon
✔✔In sucrose, glucose and fructose are the - ✔✔products
✔✔What is the enzyme in sucrose - ✔✔sucrase
✔✔Sucrose is an example of a(n) - ✔✔enzyme
✔✔What are polypeptides? - ✔✔unbranched polymers built from the same set of 20
amino acids
✔✔A _________ is a biologically functional molecule that consists of more polypeptides
- ✔✔protein
✔✔What is the monomer of protein? - ✔✔amino acid
✔✔Amino acids are made up of - ✔✔Amino group, alpha carbon, carboxyl group, and
an R group
✔✔amino acids have __ variations that substitute for R - ✔✔20
✔✔Amino acids differ in properties due to - ✔✔differing side chains (R groups)
✔✔List the 3 categories of amino acids - ✔✔Polar R groups
Nonpolar R groups
Charged R groups
