BSC2010 EXAM 1 - DR. DENNIS QUESTIONS WITH
100% CORRECT ANSWERS!!
The _____ is the basic unit of structure and function in an organism Answer -
Cell
Central Dogma: DNA is transcribed into _____ then translated into a _____
Answer - RNA, Protein
A _____ cell has membrane-enclosed organelles while a _____ cell is simpler,
usually smaller, and does not contain any membrane-enclosed organelles
Answer - Eukaryotic, Prokaryotic
Anything that takes up space and has mass is _____ Answer - Matter
An _____ is a substance that cannot be broken down to other substances by
chemical reactions Answer - Element
_____, _____, _____, and _____ are the elements that makeup 96% of living
matter Answer - Carbon, Hydrogen, Nitrogen, and Oxygen
_____ are two atoms of an element that differ in the number neutrons Answer
- Isotopes
, _____ electrons are those in the outmost shell and are responsible for the
chemical behavior of the atom Answer - Valence
The bond angle of a water molecule is _____ degrees Answer - 104.5 degrees
Hydrogen bonds hold water molecules together in a phenomenon called
_____, which is responsible for the transport of water against gravity in plants
Answer - Cohesion
_____ is an attraction between different substances, for example, between
water and plant cell walls Answer - Adhesion
In a _____ covalent bond, the atoms share electrons equally, while in a _____
covalent bond, the atoms do not share electrons equally Answer - Nonpolar,
Polar
In any aqueous solution at 25 degrees Celsius, the product of H+ (hydronium
ions) and OH- (hydroxide ions) is constant and can be written: [H+][OH-]=_____
Answer - 10^-14
A _____ substance has an affinity for water while a _____ substance does not
have an affinity for water Answer - Hydrophilic, Hydrophobic/NP/HC
All carbon enters the biosphere as ___ gas, which is converted to sugar and
biological macromolecules Answer - CO2; Carbon Dioxide
When carbon bonds with four molecules of hydrogen, the resulting molecule
has a _____ geometry and bond angles of _____ Answer - Tetrahedral, 109.5
degrees
100% CORRECT ANSWERS!!
The _____ is the basic unit of structure and function in an organism Answer -
Cell
Central Dogma: DNA is transcribed into _____ then translated into a _____
Answer - RNA, Protein
A _____ cell has membrane-enclosed organelles while a _____ cell is simpler,
usually smaller, and does not contain any membrane-enclosed organelles
Answer - Eukaryotic, Prokaryotic
Anything that takes up space and has mass is _____ Answer - Matter
An _____ is a substance that cannot be broken down to other substances by
chemical reactions Answer - Element
_____, _____, _____, and _____ are the elements that makeup 96% of living
matter Answer - Carbon, Hydrogen, Nitrogen, and Oxygen
_____ are two atoms of an element that differ in the number neutrons Answer
- Isotopes
, _____ electrons are those in the outmost shell and are responsible for the
chemical behavior of the atom Answer - Valence
The bond angle of a water molecule is _____ degrees Answer - 104.5 degrees
Hydrogen bonds hold water molecules together in a phenomenon called
_____, which is responsible for the transport of water against gravity in plants
Answer - Cohesion
_____ is an attraction between different substances, for example, between
water and plant cell walls Answer - Adhesion
In a _____ covalent bond, the atoms share electrons equally, while in a _____
covalent bond, the atoms do not share electrons equally Answer - Nonpolar,
Polar
In any aqueous solution at 25 degrees Celsius, the product of H+ (hydronium
ions) and OH- (hydroxide ions) is constant and can be written: [H+][OH-]=_____
Answer - 10^-14
A _____ substance has an affinity for water while a _____ substance does not
have an affinity for water Answer - Hydrophilic, Hydrophobic/NP/HC
All carbon enters the biosphere as ___ gas, which is converted to sugar and
biological macromolecules Answer - CO2; Carbon Dioxide
When carbon bonds with four molecules of hydrogen, the resulting molecule
has a _____ geometry and bond angles of _____ Answer - Tetrahedral, 109.5
degrees
