Bio 271 Exam 1 Questions With Complete Solutions
What membrane lines the heart
Pericardium
What membrane lines the abdominal cavity
peritoneum
What does the word visceral apply to
membrane attached to an organ
What does the word parietal apply to
membrane that lines the area an organ is located
Define element
simplest form of matter to have unique chemical properties
Define atom
smallest unit of matter to enter into a chemical reaction
Define nucleus
Center of an atom
What determines the atomic number?
Number of protons
What determines the atomic weight?
protons + neutrons
What are two radioactive isotopes?
, iodine and technetium
What is a molecule?
a combination of two or more atoms
Define ionic bond
positive attraction to a negative. they LEAVE the atom to join
another
Define covalent bond
held together by SHARING atoms
What is an anabolic reaction?
making larger molecules
What is an catabolic reaction?
When larger molecules are broken down
Define enzyme
a molecule that increases the rate of a chemical reaction
What do acids release
H+
What do bases release
OH-
Define ions
charged particles with unequal numbers of and electrons
Define anions
What membrane lines the heart
Pericardium
What membrane lines the abdominal cavity
peritoneum
What does the word visceral apply to
membrane attached to an organ
What does the word parietal apply to
membrane that lines the area an organ is located
Define element
simplest form of matter to have unique chemical properties
Define atom
smallest unit of matter to enter into a chemical reaction
Define nucleus
Center of an atom
What determines the atomic number?
Number of protons
What determines the atomic weight?
protons + neutrons
What are two radioactive isotopes?
, iodine and technetium
What is a molecule?
a combination of two or more atoms
Define ionic bond
positive attraction to a negative. they LEAVE the atom to join
another
Define covalent bond
held together by SHARING atoms
What is an anabolic reaction?
making larger molecules
What is an catabolic reaction?
When larger molecules are broken down
Define enzyme
a molecule that increases the rate of a chemical reaction
What do acids release
H+
What do bases release
OH-
Define ions
charged particles with unequal numbers of and electrons
Define anions
