Biology 109 - Final Exam Review
2024/2025 Exam Questions and
Corresponding Answers with Surety of
100% Pass Mark
Which of the following compounds is only found in the cell walls of gram-
negative bacteria?
- peptidoglycan
- lipopolysaccharide
- protein
- chitin
- cellulose - 🧠ANSWER ✔✔- lipopolysaccharide
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
- conjugation
- sexual reproduction
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,- transformation
- translocation
- none of the above - 🧠ANSWER ✔✔- transformation
poisoned by O2
- obligate anaerobe
- extreme thermophile
- photoautotroph
- methanogens - 🧠ANSWER ✔✔- obligate anaerobe
thrive in very hot environments
- obligate anaerobe
- extreme thermophile
- photoautotroph
- methanogens - 🧠ANSWER ✔✔- extreme thermophile
uses light energy to drive the synthesis of organic compounds from CO2
- obligate anaerobe
- extreme thermophile
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STATEMENT. ALL RIGHTS RESERVED
,- photoautotroph
- methanogens - 🧠ANSWER ✔✔- photoautotroph
uses CO2 to oxidize H2, releasing CH4 as a waste product
- obligate anaerobe
- extreme thermophile
- photoautotroph
- methanogens - 🧠ANSWER ✔✔- methanogens
Which of the following cellular components would be found in bacteria, but
is generally lacking in protists (including all protozoans)?
- a mitochondria
- a cell wall
- a nucleus - 🧠ANSWER ✔✔- a cell wall
When sunlight is unavailable, these protists can switch from an autotrophic
nutritional mode to a heterotrophic one?
- Autotrophs
- Chemoautotrophs
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STATEMENT. ALL RIGHTS RESERVED
, - Mixotrophs
- Heterotrophs - 🧠ANSWER ✔✔- Mixotrophs
A _____ is a reproductive structure of fungi that develops from a mycelium.
- Saprobe
- Fruiting body
- Chlorophyll
- Annelids - 🧠ANSWER ✔✔- Fruiting body
The mutualistic relationship between plant roots and fungi of the phylum
glomeromycota:
- lichen
- ectomycorrhizae
- arbuscular mycorrhizae
- mycosis
- yeast - 🧠ANSWER ✔✔- arbuscular mycorrhizae
Which of the following is (are) unique to animals?
- cells that have mitochondria
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
2024/2025 Exam Questions and
Corresponding Answers with Surety of
100% Pass Mark
Which of the following compounds is only found in the cell walls of gram-
negative bacteria?
- peptidoglycan
- lipopolysaccharide
- protein
- chitin
- cellulose - 🧠ANSWER ✔✔- lipopolysaccharide
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
- conjugation
- sexual reproduction
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,- transformation
- translocation
- none of the above - 🧠ANSWER ✔✔- transformation
poisoned by O2
- obligate anaerobe
- extreme thermophile
- photoautotroph
- methanogens - 🧠ANSWER ✔✔- obligate anaerobe
thrive in very hot environments
- obligate anaerobe
- extreme thermophile
- photoautotroph
- methanogens - 🧠ANSWER ✔✔- extreme thermophile
uses light energy to drive the synthesis of organic compounds from CO2
- obligate anaerobe
- extreme thermophile
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
,- photoautotroph
- methanogens - 🧠ANSWER ✔✔- photoautotroph
uses CO2 to oxidize H2, releasing CH4 as a waste product
- obligate anaerobe
- extreme thermophile
- photoautotroph
- methanogens - 🧠ANSWER ✔✔- methanogens
Which of the following cellular components would be found in bacteria, but
is generally lacking in protists (including all protozoans)?
- a mitochondria
- a cell wall
- a nucleus - 🧠ANSWER ✔✔- a cell wall
When sunlight is unavailable, these protists can switch from an autotrophic
nutritional mode to a heterotrophic one?
- Autotrophs
- Chemoautotrophs
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
, - Mixotrophs
- Heterotrophs - 🧠ANSWER ✔✔- Mixotrophs
A _____ is a reproductive structure of fungi that develops from a mycelium.
- Saprobe
- Fruiting body
- Chlorophyll
- Annelids - 🧠ANSWER ✔✔- Fruiting body
The mutualistic relationship between plant roots and fungi of the phylum
glomeromycota:
- lichen
- ectomycorrhizae
- arbuscular mycorrhizae
- mycosis
- yeast - 🧠ANSWER ✔✔- arbuscular mycorrhizae
Which of the following is (are) unique to animals?
- cells that have mitochondria
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
