DAT Practice EXAM TEST WITH LATEST UPDATED
(QUESTIONS AND ANSWERS) GET IT RIGHT| Already
passed!!
Where are intramolecular forces? - (ANSWER)within a molecule
Where are intermolecular forces? - (ANSWER)between molecules
What is sucrose made of? - (ANSWER)glucose and fructose
What is lactose made of? - (ANSWER)glucose and galactose
What is maltose made of? - (ANSWER)glucose and glucose
What is starch? - (ANSWER)energy storage in plants
What is glycogen? - (ANSWER)energy storage in humans
What is cellulose? - (ANSWER)structural component in plant cell walls
What is chitin? - (ANSWER)structural component in fungi cell walls
Primary protein? - (ANSWER)sequence of amino acids
,Secondary protein? - (ANSWER)intermolecular forces due to H-bonds
Tertiary protein? - (ANSWER)3D structure
Quaternary protein? - (ANSWER)multiple polypeptides
What causes protein denaturation? - (ANSWER)high or low temps, pH changes,
salt concentrations
What are catalysts? - (ANSWER)increase reaction rates, lower activation energy,
reduce energy of TS
Where do enzymes bind? - (ANSWER)active site
Specificity constant? - (ANSWER)how efficiently an enzyme converts a substrate
into product
Ribozyme? - (ANSWER)RNA molecule that acts as an enzyme
Cofactor? - (ANSWER)non-protein molecule that helps enzyme
,What is competitive inhibition? - (ANSWER)inhibitor competes with substrate for
active site
What is noncompetitive inhibition? - (ANSWER)inhibitor binds at a site different
from substrate
During competitive inhibition, what do Km & Vmax do? - (ANSWER)Km increases,
Vmax stays the same
During noncompetitive inhibition, what do Km & Vmax do? - (ANSWER)Km stays
the same, Vmax decreases
Are lipids hydrophobic or hydrophilic? - (ANSWER)hydrophobic
Saturated fatty acids have...? - (ANSWER)no double bonds (pack tightly)
Unsaturated fatty acids have...? - (ANSWER)double bonds
Amphipathic? - (ANSWER)hydrophobic and hydrophilic (ex: phospholipids)
What influences membrane fluidity? - (ANSWER)temperature, cholesterol,
degrees of unsaturation
, Lipoproteins do what? - (ANSWER)Carry lipids in the blood
LDLs (low density lipoproteins)... - (ANSWER)deliver cholesterol to peripheral
tissues (bad cholesterol)
HDLs (high density lipoproteins)... - (ANSWER)take cholesterol away from
peripheral tissues (good cholesterol)
Waxes? - (ANSWER)simple lipids with long FA's (hydrophobic)
A-T bonds have how many H-bonds? - (ANSWER)2
G-C bonds have how many H bonds? - (ANSWER)3
Modern cell theory states... - (ANSWER)1) all lifeforms have 1+ cells
2) cell = basic unit of life
3) all cells come from other cells
4) genetic info is stored & passed through DNA
5) organism's activity is dependent of total activity of its independent cells
6) metabolism & biochemistry occurs within cells
7) all cells have same chemical composition within organisms of similar species
(QUESTIONS AND ANSWERS) GET IT RIGHT| Already
passed!!
Where are intramolecular forces? - (ANSWER)within a molecule
Where are intermolecular forces? - (ANSWER)between molecules
What is sucrose made of? - (ANSWER)glucose and fructose
What is lactose made of? - (ANSWER)glucose and galactose
What is maltose made of? - (ANSWER)glucose and glucose
What is starch? - (ANSWER)energy storage in plants
What is glycogen? - (ANSWER)energy storage in humans
What is cellulose? - (ANSWER)structural component in plant cell walls
What is chitin? - (ANSWER)structural component in fungi cell walls
Primary protein? - (ANSWER)sequence of amino acids
,Secondary protein? - (ANSWER)intermolecular forces due to H-bonds
Tertiary protein? - (ANSWER)3D structure
Quaternary protein? - (ANSWER)multiple polypeptides
What causes protein denaturation? - (ANSWER)high or low temps, pH changes,
salt concentrations
What are catalysts? - (ANSWER)increase reaction rates, lower activation energy,
reduce energy of TS
Where do enzymes bind? - (ANSWER)active site
Specificity constant? - (ANSWER)how efficiently an enzyme converts a substrate
into product
Ribozyme? - (ANSWER)RNA molecule that acts as an enzyme
Cofactor? - (ANSWER)non-protein molecule that helps enzyme
,What is competitive inhibition? - (ANSWER)inhibitor competes with substrate for
active site
What is noncompetitive inhibition? - (ANSWER)inhibitor binds at a site different
from substrate
During competitive inhibition, what do Km & Vmax do? - (ANSWER)Km increases,
Vmax stays the same
During noncompetitive inhibition, what do Km & Vmax do? - (ANSWER)Km stays
the same, Vmax decreases
Are lipids hydrophobic or hydrophilic? - (ANSWER)hydrophobic
Saturated fatty acids have...? - (ANSWER)no double bonds (pack tightly)
Unsaturated fatty acids have...? - (ANSWER)double bonds
Amphipathic? - (ANSWER)hydrophobic and hydrophilic (ex: phospholipids)
What influences membrane fluidity? - (ANSWER)temperature, cholesterol,
degrees of unsaturation
, Lipoproteins do what? - (ANSWER)Carry lipids in the blood
LDLs (low density lipoproteins)... - (ANSWER)deliver cholesterol to peripheral
tissues (bad cholesterol)
HDLs (high density lipoproteins)... - (ANSWER)take cholesterol away from
peripheral tissues (good cholesterol)
Waxes? - (ANSWER)simple lipids with long FA's (hydrophobic)
A-T bonds have how many H-bonds? - (ANSWER)2
G-C bonds have how many H bonds? - (ANSWER)3
Modern cell theory states... - (ANSWER)1) all lifeforms have 1+ cells
2) cell = basic unit of life
3) all cells come from other cells
4) genetic info is stored & passed through DNA
5) organism's activity is dependent of total activity of its independent cells
6) metabolism & biochemistry occurs within cells
7) all cells have same chemical composition within organisms of similar species
