KU BIOL 600 EXAM 1 QUESTIONS AND
VERIFIED ANSWERS
What 3 elements make up 98% of the atoms in our body
C,H,O
What are the 3 components of nucleic acids
phosphate group, 5 carbon sugar, nitrogen base
Mitochondria
Has its own DNA, synthesizes metabolites needed for life (pyruvate, acetyl
CoA)
Rough ER
Ribosomes attached to sides, site of translation, protein folding, and
modification
Golgi complex
Proteins shuttled from rough ER to golgi by secretory vesicles and membrane vs
cytoplasmic proteins are sorted
Secretory granules bud off of the ___ before they are trafficked to the
membrane and secreted into the extracellular
Golgi complex
The endosome forms when the plasma membrane buds off and is repsonsible
for what?
Bringing crucial biomolecules into the cell
The cytoskeleton provides ____ and contributes to cell ____??
Structure and movement
, Brownian motion is responsible for initiating _____??
Many biochemical reactions
What allows water molecules to form hydrogen bonds
The polarity, O is partially negative, H partially positive
Covalent bonds are strong interactions with what energy
418 kJ/mol
Weak interactions include what types of bonds
Ionic: 5.8 kJ/mol; Hydrogen: 8-20kJ/mol; Van der Waals: 2-4kJ/mol
The force of an electrostatic interaction between two charges is given by what
law
Coulomb's law
Water weakens what types of interactions
Electrostatic (ionic)
What elements form the most hydrogens bonds
Oxygen and nitrogen
Nonpolar and uncharged molecules can interact electrostatically via what
interactions
Van der waals
The inability of water to dissolve nonpolar molecules is what effect
Hydrophobic effect due to the second law of thermodynamics
- entropy always increases in spontaneous reaction
Increased entropy through the hydrophobic effect does what
Makes more water molecules available
VERIFIED ANSWERS
What 3 elements make up 98% of the atoms in our body
C,H,O
What are the 3 components of nucleic acids
phosphate group, 5 carbon sugar, nitrogen base
Mitochondria
Has its own DNA, synthesizes metabolites needed for life (pyruvate, acetyl
CoA)
Rough ER
Ribosomes attached to sides, site of translation, protein folding, and
modification
Golgi complex
Proteins shuttled from rough ER to golgi by secretory vesicles and membrane vs
cytoplasmic proteins are sorted
Secretory granules bud off of the ___ before they are trafficked to the
membrane and secreted into the extracellular
Golgi complex
The endosome forms when the plasma membrane buds off and is repsonsible
for what?
Bringing crucial biomolecules into the cell
The cytoskeleton provides ____ and contributes to cell ____??
Structure and movement
, Brownian motion is responsible for initiating _____??
Many biochemical reactions
What allows water molecules to form hydrogen bonds
The polarity, O is partially negative, H partially positive
Covalent bonds are strong interactions with what energy
418 kJ/mol
Weak interactions include what types of bonds
Ionic: 5.8 kJ/mol; Hydrogen: 8-20kJ/mol; Van der Waals: 2-4kJ/mol
The force of an electrostatic interaction between two charges is given by what
law
Coulomb's law
Water weakens what types of interactions
Electrostatic (ionic)
What elements form the most hydrogens bonds
Oxygen and nitrogen
Nonpolar and uncharged molecules can interact electrostatically via what
interactions
Van der waals
The inability of water to dissolve nonpolar molecules is what effect
Hydrophobic effect due to the second law of thermodynamics
- entropy always increases in spontaneous reaction
Increased entropy through the hydrophobic effect does what
Makes more water molecules available
