BIO 121 Final Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
What is a bacteriophage? - CORRECT ANSWER - A virus that infects bacteria
What does DNA transformation mean? - CORRECT ANSWER - DNA is transferred into
the host cell
What does transduction mean? - CORRECT ANSWER - foreign DNA is introduced into a
cell by a virus or viral vector
Are archaea prokaryotic or eukaryotic? - CORRECT ANSWER - Prokaryotic
Main difference of the cell wall between gram positive and gram negative - CORRECT
ANSWER - Gram positive has thick layers of peptidoglycan and gram negative has thin
layers
Which of the following species use pseudopodia to move around and engulf food particles as
energy and carbon source?
(Volvox, Diatoms, spirogyra, chlamydomonas, Amoeba) - CORRECT ANSWER -
Amoeba
What are the main differences of mitosis and meiosis? (chromosome numbers, number of
divisions, cells types) - CORRECT ANSWER - number of divisions
What's the known cause of Down syndrome? - CORRECT ANSWER - abnormal cell
division, extra chromosome
Which of the following protists are known parasites, and what diseases do they cause?
, (Paramecium, Giardia intestinalis, Trypanosoma, Trichomonas vaginalis, and Plasmodium
malariae) - CORRECT ANSWER - Plasmodium causes malaria, giardia causes diarrhea,
trichomonas causes STIs
Which of the following species are not considered as protists?
(Slime molds, yeasts, green algae, brown algae, red algae, and golden algae) - CORRECT
ANSWER - brown and golden algae
What are the main protists features of? - CORRECT ANSWER - all eukaryotic organisms,
membrane-enclosed nucleus, aquatic
What protist causes malaria? - CORRECT ANSWER - Plasmodium
What protist causes African sleeping sickness? - CORRECT ANSWER - Trypanosoma
What hypothesis has been developed to explain the origin of mitochondria and plastids of
eukaryotic species? - CORRECT ANSWER - endosymbiotic theory
What is carrying capacity? - CORRECT ANSWER - the number of people, other living
organisms, or crops that a region can support without environmental degradation.
Lichens are formed by a mutualistic interaction between - CORRECT ANSWER -a
fungal species and green algae or cyanobacteria
What does mycorrhiza mean? - CORRECT ANSWER - mutualistic association between
fungi from Glomeromycota phylum and plant root cells
What is the energy source that the most primary producers use in a terrestrial ecosystem? -
CORRECT ANSWER - sun
Exam Questions and CORRECT Answers
What is a bacteriophage? - CORRECT ANSWER - A virus that infects bacteria
What does DNA transformation mean? - CORRECT ANSWER - DNA is transferred into
the host cell
What does transduction mean? - CORRECT ANSWER - foreign DNA is introduced into a
cell by a virus or viral vector
Are archaea prokaryotic or eukaryotic? - CORRECT ANSWER - Prokaryotic
Main difference of the cell wall between gram positive and gram negative - CORRECT
ANSWER - Gram positive has thick layers of peptidoglycan and gram negative has thin
layers
Which of the following species use pseudopodia to move around and engulf food particles as
energy and carbon source?
(Volvox, Diatoms, spirogyra, chlamydomonas, Amoeba) - CORRECT ANSWER -
Amoeba
What are the main differences of mitosis and meiosis? (chromosome numbers, number of
divisions, cells types) - CORRECT ANSWER - number of divisions
What's the known cause of Down syndrome? - CORRECT ANSWER - abnormal cell
division, extra chromosome
Which of the following protists are known parasites, and what diseases do they cause?
, (Paramecium, Giardia intestinalis, Trypanosoma, Trichomonas vaginalis, and Plasmodium
malariae) - CORRECT ANSWER - Plasmodium causes malaria, giardia causes diarrhea,
trichomonas causes STIs
Which of the following species are not considered as protists?
(Slime molds, yeasts, green algae, brown algae, red algae, and golden algae) - CORRECT
ANSWER - brown and golden algae
What are the main protists features of? - CORRECT ANSWER - all eukaryotic organisms,
membrane-enclosed nucleus, aquatic
What protist causes malaria? - CORRECT ANSWER - Plasmodium
What protist causes African sleeping sickness? - CORRECT ANSWER - Trypanosoma
What hypothesis has been developed to explain the origin of mitochondria and plastids of
eukaryotic species? - CORRECT ANSWER - endosymbiotic theory
What is carrying capacity? - CORRECT ANSWER - the number of people, other living
organisms, or crops that a region can support without environmental degradation.
Lichens are formed by a mutualistic interaction between - CORRECT ANSWER -a
fungal species and green algae or cyanobacteria
What does mycorrhiza mean? - CORRECT ANSWER - mutualistic association between
fungi from Glomeromycota phylum and plant root cells
What is the energy source that the most primary producers use in a terrestrial ecosystem? -
CORRECT ANSWER - sun
