UMKC Bio 109 Exam 1 Study Guide
questions with verified answers
2025/2026
All of following statements concerning the bacterial cell wall are true with the exception of -
CORRECT ANSWER ✔✔is the source of endotoxins in gram positive bacteria
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 - CORRECT ANSWER ✔✔transformation
An organism that obtains energy from inorganic chemicals such as NH3 - CORRECT ANSWER
✔✔chemoautotroph
An organism that obtains both energy and carbon as it decomposes dead organisms - CORRECT
ANSWER ✔✔chemoheterotroph
An organism that obtains energy from sunlight. - CORRECT ANSWER ✔✔photoheterotroph
Which of the following descriptions of protists is incorrect? - CORRECT ANSWER ✔✔protists are
prokaryotic
The intermediate host in the life cycle of a blood fluke is - CORRECT ANSWER ✔✔a gastropod
mollusk
The stage in the sexual life cycle of fungi that involves the fusion of haploid nuclei - CORRECT
ANSWER ✔✔karyogamy
, The mutualistic relationship between plant roots and fungi of the phylum glomeromycota -
CORRECT ANSWER ✔✔arbuscular mycorrhizae
Which of the following is (are) unique to animals? - CORRECT ANSWER ✔✔nervous conduction
and muscular movement
Radial symmetry is generally associated with - CORRECT ANSWER ✔✔a sessile existence
Which of the following combinations of phylum and description is incorrect? - CORRECT
ANSWER ✔✔Echinodermata - protostome development, post anal tail
All of the following can be observed in the phylum Cnidaria except - CORRECT ANSWER ✔✔a
pseudocoelom
Which of the following phyla do not have blind-sac body plans (a gastrovascular cavity with a
single opening)? - CORRECT ANSWER ✔✔Annelida (polychaete worms, earth worms, leeches)
Which of the following is not an advantage of the arthropod exoskeleton? - CORRECT ANSWER
✔✔enhances sensory perception
Pharyngeal slits appear to have functioned first as - CORRECT ANSWER ✔✔suspension-feeding
devices
A derived character that distinguishes the chondrichthyans from other clades is the presence of
- CORRECT ANSWER ✔✔a cartilagenous endoskeleton
Which of the following compounds is most common in the cell walls of Gram positive bacteria? -
CORRECT ANSWER ✔✔peptidoglycan
questions with verified answers
2025/2026
All of following statements concerning the bacterial cell wall are true with the exception of -
CORRECT ANSWER ✔✔is the source of endotoxins in gram positive bacteria
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 - CORRECT ANSWER ✔✔transformation
An organism that obtains energy from inorganic chemicals such as NH3 - CORRECT ANSWER
✔✔chemoautotroph
An organism that obtains both energy and carbon as it decomposes dead organisms - CORRECT
ANSWER ✔✔chemoheterotroph
An organism that obtains energy from sunlight. - CORRECT ANSWER ✔✔photoheterotroph
Which of the following descriptions of protists is incorrect? - CORRECT ANSWER ✔✔protists are
prokaryotic
The intermediate host in the life cycle of a blood fluke is - CORRECT ANSWER ✔✔a gastropod
mollusk
The stage in the sexual life cycle of fungi that involves the fusion of haploid nuclei - CORRECT
ANSWER ✔✔karyogamy
, The mutualistic relationship between plant roots and fungi of the phylum glomeromycota -
CORRECT ANSWER ✔✔arbuscular mycorrhizae
Which of the following is (are) unique to animals? - CORRECT ANSWER ✔✔nervous conduction
and muscular movement
Radial symmetry is generally associated with - CORRECT ANSWER ✔✔a sessile existence
Which of the following combinations of phylum and description is incorrect? - CORRECT
ANSWER ✔✔Echinodermata - protostome development, post anal tail
All of the following can be observed in the phylum Cnidaria except - CORRECT ANSWER ✔✔a
pseudocoelom
Which of the following phyla do not have blind-sac body plans (a gastrovascular cavity with a
single opening)? - CORRECT ANSWER ✔✔Annelida (polychaete worms, earth worms, leeches)
Which of the following is not an advantage of the arthropod exoskeleton? - CORRECT ANSWER
✔✔enhances sensory perception
Pharyngeal slits appear to have functioned first as - CORRECT ANSWER ✔✔suspension-feeding
devices
A derived character that distinguishes the chondrichthyans from other clades is the presence of
- CORRECT ANSWER ✔✔a cartilagenous endoskeleton
Which of the following compounds is most common in the cell walls of Gram positive bacteria? -
CORRECT ANSWER ✔✔peptidoglycan
