Bio 109 Biological Diversity Unit 1
Questions and Answers 100% Pass
B - ✔✔Which of the following is an important source of endotoxin in Gram-negative
species?
A. plasmid
B. cell wall
C. endospore
D. fimbriae
E. flagellum
C - ✔✔When a non-pathogenic strain of S. pneumoniae is mixed with a heat-killed
pathogenic strain, the former is converted to the pathogenic form. The process
responsible for this conversion is termed
A. conjugation
B. sexual reproduction
C. transformation
D. translocation
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 1
,E. none of the above
chemoheterotroph - ✔✔An organism that obtains both energy and carbon as it
decomposes dead organisms
photoheterotroph - ✔✔An organism that obtains energy from sunlight.
chemoautotroph - ✔✔An organism that obtains energy from inorganic chemicals such
as NH3
D - ✔✔The intermediate host in the life cycle of a blood fluke is
A. an anopheles mosquito
B. a kissing bug
C. a sand fly
D. a gastropod mollusk
E. none of the above
fruiting body - ✔✔Reproductive structure of fungi that develops from a mycelium.
D - ✔✔The mutualistic relationship between plant roots and fungi of the phylum
glomeromycota
A. ectomycorrhizae
B. mycosis
C. yeast
D. arbuscular mycorrhizae
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 2
, E. lichen
E - ✔✔A graduate student finds an organism in a pond and thinks it is a freshwater
sponge. A postdoc thinks it looks more like an aquatic fungus. How can they decide
whether it is an animal or a fungus?
A. See if it reproduces sexually.
B. Determine whether it is unicellular or multicellular.
C. See if it is a eukaryote or prokaryote.
D. Figure out whether it is autotrophic or heterotrophic.
E. Look for cell walls under a microscope.
A - ✔✔An adult animal that possesses bilateral symmetry is most certainly also
A. triploblastic
B. the product of metamorphosis
C. a coelomate
D. highly cephalized
E. a deuterostome
C - ✔✔Which of the following combinations of phylum and description is incorrect?
A. Cnidaria - radial symmetry, polyp and medusa body forms
B. Platyhelminthes - flatworms, gastrovascular cavity, acoelomate
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 3
Questions and Answers 100% Pass
B - ✔✔Which of the following is an important source of endotoxin in Gram-negative
species?
A. plasmid
B. cell wall
C. endospore
D. fimbriae
E. flagellum
C - ✔✔When a non-pathogenic strain of S. pneumoniae is mixed with a heat-killed
pathogenic strain, the former is converted to the pathogenic form. The process
responsible for this conversion is termed
A. conjugation
B. sexual reproduction
C. transformation
D. translocation
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 1
,E. none of the above
chemoheterotroph - ✔✔An organism that obtains both energy and carbon as it
decomposes dead organisms
photoheterotroph - ✔✔An organism that obtains energy from sunlight.
chemoautotroph - ✔✔An organism that obtains energy from inorganic chemicals such
as NH3
D - ✔✔The intermediate host in the life cycle of a blood fluke is
A. an anopheles mosquito
B. a kissing bug
C. a sand fly
D. a gastropod mollusk
E. none of the above
fruiting body - ✔✔Reproductive structure of fungi that develops from a mycelium.
D - ✔✔The mutualistic relationship between plant roots and fungi of the phylum
glomeromycota
A. ectomycorrhizae
B. mycosis
C. yeast
D. arbuscular mycorrhizae
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 2
, E. lichen
E - ✔✔A graduate student finds an organism in a pond and thinks it is a freshwater
sponge. A postdoc thinks it looks more like an aquatic fungus. How can they decide
whether it is an animal or a fungus?
A. See if it reproduces sexually.
B. Determine whether it is unicellular or multicellular.
C. See if it is a eukaryote or prokaryote.
D. Figure out whether it is autotrophic or heterotrophic.
E. Look for cell walls under a microscope.
A - ✔✔An adult animal that possesses bilateral symmetry is most certainly also
A. triploblastic
B. the product of metamorphosis
C. a coelomate
D. highly cephalized
E. a deuterostome
C - ✔✔Which of the following combinations of phylum and description is incorrect?
A. Cnidaria - radial symmetry, polyp and medusa body forms
B. Platyhelminthes - flatworms, gastrovascular cavity, acoelomate
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 3
