Bio 121 final exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
Transfer bacteria DNA from one cell to the other during the process of transduction - CORRECT
ANSWER - bacteriophage
The process by which that bacteria take up DNA from their environment - CORRECT
ANSWER - DNA transformation
DNA transfer carried out by bacterial virus bacterial phage - CORRECT ANSWER -
transduction
Are archaea prokaryotic or eukaryotic species? - CORRECT ANSWER - prokaryotic
The cell wall of gram positive bacterial cells have ___ - CORRECT ANSWER - thick layer of
peptidoglycan
The cell wall of gram negative bacterial cells have___ - CORRECT ANSWER - thin layer of
peptidoglycan and a layer of lipopolysaccharides
Which of the following species use pseudopodia to move around and engulf food particles as
energy and carbon source? - CORRECT ANSWER - Amoeba
What are the main differences of mitosis and meiosis? - CORRECT ANSWER -
What's the known cause of Down syndrome? - CORRECT ANSWER - Chromosome
duplication of part of chromosome 21
, Which of the following protists are known parasites, and what diseases do they cause? -
CORRECT ANSWER - Giardia intestinalis: severe diarrhea, Trypanosoma: sleeping sickness,
and Plasmodium malariae: malaria disease
Which of the following species are not considered as protists?
(Slime molds, yeasts, green alage, brown algae, red algae, and golden algae) - CORRECT
ANSWER - yeasts
What protist causes malaria? - CORRECT ANSWER - Plasmodium falciparum
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 - Endosymbiosis
The maximum population size that a particular environment can support - CORRECT
ANSWER - carrying capacity
Lichens are formed by a ___ interaction between a fungal species and green algae or
cyanobacteria. - CORRECT ANSWER - mutualistic
A mutualistic association between fungi from Glomeromycota phylum and plant root cells. -
CORRECT ANSWER - mycorrhiza
What is the energy source that the most primary producers use in a terrestrial ecosystem? -
CORRECT ANSWER - Sunlight
The mitotic phase alternates with interphase in the cell cycle. When does DNA (or chromosome)
replication take place in the cell cycle? - CORRECT ANSWER - S phase
Exam Questions and CORRECT Answers
Transfer bacteria DNA from one cell to the other during the process of transduction - CORRECT
ANSWER - bacteriophage
The process by which that bacteria take up DNA from their environment - CORRECT
ANSWER - DNA transformation
DNA transfer carried out by bacterial virus bacterial phage - CORRECT ANSWER -
transduction
Are archaea prokaryotic or eukaryotic species? - CORRECT ANSWER - prokaryotic
The cell wall of gram positive bacterial cells have ___ - CORRECT ANSWER - thick layer of
peptidoglycan
The cell wall of gram negative bacterial cells have___ - CORRECT ANSWER - thin layer of
peptidoglycan and a layer of lipopolysaccharides
Which of the following species use pseudopodia to move around and engulf food particles as
energy and carbon source? - CORRECT ANSWER - Amoeba
What are the main differences of mitosis and meiosis? - CORRECT ANSWER -
What's the known cause of Down syndrome? - CORRECT ANSWER - Chromosome
duplication of part of chromosome 21
, Which of the following protists are known parasites, and what diseases do they cause? -
CORRECT ANSWER - Giardia intestinalis: severe diarrhea, Trypanosoma: sleeping sickness,
and Plasmodium malariae: malaria disease
Which of the following species are not considered as protists?
(Slime molds, yeasts, green alage, brown algae, red algae, and golden algae) - CORRECT
ANSWER - yeasts
What protist causes malaria? - CORRECT ANSWER - Plasmodium falciparum
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 - Endosymbiosis
The maximum population size that a particular environment can support - CORRECT
ANSWER - carrying capacity
Lichens are formed by a ___ interaction between a fungal species and green algae or
cyanobacteria. - CORRECT ANSWER - mutualistic
A mutualistic association between fungi from Glomeromycota phylum and plant root cells. -
CORRECT ANSWER - mycorrhiza
What is the energy source that the most primary producers use in a terrestrial ecosystem? -
CORRECT ANSWER - Sunlight
The mitotic phase alternates with interphase in the cell cycle. When does DNA (or chromosome)
replication take place in the cell cycle? - CORRECT ANSWER - S phase
