BIOL 250 FINAL EXAM Questions and
Answers | Latest Update 2026/2027 |
Graded A+ (100% Correct)
What did Koch identify the causative agents of
Ans: cholera-- Vibrio cholerae
tuberculosis--Mycobacterium tuberculosis
anthrax-- Bacillus anthracis
Robert Hooke
Ans: developed the first microscope, used to look at plant cells, first to use the term cells--
looked like what monks lived in
Anton Van Leeuwenhoek
Ans: father of microbiology
first to look at living material-- scraped his teeth and saw that sick people had different
microogranisms than his did
schleiden and schwann
,Ans: formulated the cell theory-- cells are fundamental unit of life and carry out functions
of all living things
Louis Pasteur
Ans: swan flask experiment-- if the flask was tipped then it would come in contact with
particles and growth would occur immediately
Koch's postulates
Ans: When determining the causative agent of disease...
1. specific causative agent must be fond in every case of the disease
2. the disease organism must be isolated into pure culture
3. inoculate a sample of the culture into a previously healthy individual-- must produce the
same disease symptoms
4. culture recovered from the inoculated animal must be the same as the original disease
causing agent
Phillip Semmelweis
,Ans: doctors should wash their hands-- connection between doctors doing autopsies and
delivering babies
atom
Ans: smallest chemical unit
element
Ans: composted of one kind of matter
molecule
Ans: two or more atoms combied-- O2
compound
Ans: multiple elements- C6H12O6
atomic weight
Ans: sum of protons and neutrons
, atomic number
Ans: sum of protons in the nucleus
Joseph Lister
Ans: father of antiseptic surgery
cations
Ans: lose an electron when joined with another atom, become more positively charged
anion
Ans: gain an electron, become more negatively charged
isotopes
Ans: atoms within elements that have different number on neutrons-- ex. carbon12,13,14
gram molecular weight
Ans: adding based on atomic weights
Answers | Latest Update 2026/2027 |
Graded A+ (100% Correct)
What did Koch identify the causative agents of
Ans: cholera-- Vibrio cholerae
tuberculosis--Mycobacterium tuberculosis
anthrax-- Bacillus anthracis
Robert Hooke
Ans: developed the first microscope, used to look at plant cells, first to use the term cells--
looked like what monks lived in
Anton Van Leeuwenhoek
Ans: father of microbiology
first to look at living material-- scraped his teeth and saw that sick people had different
microogranisms than his did
schleiden and schwann
,Ans: formulated the cell theory-- cells are fundamental unit of life and carry out functions
of all living things
Louis Pasteur
Ans: swan flask experiment-- if the flask was tipped then it would come in contact with
particles and growth would occur immediately
Koch's postulates
Ans: When determining the causative agent of disease...
1. specific causative agent must be fond in every case of the disease
2. the disease organism must be isolated into pure culture
3. inoculate a sample of the culture into a previously healthy individual-- must produce the
same disease symptoms
4. culture recovered from the inoculated animal must be the same as the original disease
causing agent
Phillip Semmelweis
,Ans: doctors should wash their hands-- connection between doctors doing autopsies and
delivering babies
atom
Ans: smallest chemical unit
element
Ans: composted of one kind of matter
molecule
Ans: two or more atoms combied-- O2
compound
Ans: multiple elements- C6H12O6
atomic weight
Ans: sum of protons and neutrons
, atomic number
Ans: sum of protons in the nucleus
Joseph Lister
Ans: father of antiseptic surgery
cations
Ans: lose an electron when joined with another atom, become more positively charged
anion
Ans: gain an electron, become more negatively charged
isotopes
Ans: atoms within elements that have different number on neutrons-- ex. carbon12,13,14
gram molecular weight
Ans: adding based on atomic weights
