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Bio 110 Final Exam Questions Latest Updates 2024/2025
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Bio 110 Final Exam Questions Latest Updates 2024/2025
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Bio 110 Final Exam QuestionsLatest Updates 2024/2025
Penicillin was the first antibiotic used to fight disease. Why is it not widely
used now? ANS✔✔ Most strains of pathogenic bacteria are resistant to it now
What is true of the endomembrane system? ANS✔✔ Proteins that will be
secreted from the cell are likely to be found in closed spaces bounded by
membranes of the endomembrane system
What is a chemoheterotroph? ANS✔✔ Someone who get a complex carbon
from a living source
What is a chemoautotroph? ANS✔✔ Someone who gets carbon dioxide from
a living source.
What is mutualism? ANS✔✔ Both members gain from the relationship.
What is commensalism? ANS✔✔ When one member gains from the
relationship while the other has no effect.
Prokaryotes have a short generation time, therefore: ANS✔✔ The evolve
more rapidly than humans
All biological macromolecules ANS✔✔ Have a structure based on carbon
atoms
, A nonpolar amino acid in the normal form of the protein is replaced by a
polar amino acid. This single substitution makes the collagen molecules:
ANS✔✔ More hydrophilic
What organelle in a cell is responsible for detoxification? ANS✔✔ Smooth
endoplasmic reitcullum
Differences among organisms are caused by differences in: ANS✔✔ The sizes
of the organic molecules in each organism
What components of the cytoskeleton that allows these cilia to more are:
ANS✔✔ microtubules made of tubulin
What is the age of the earth and how do we know? ANS✔✔ 4.5 billion
years/radioisotope dating of rocks from the surface of the moon
What does gram-positive mean? ANS✔✔ Bacteria containing a lot of
peptidoglycan in their cell walls also tend to have less complex cell walls,
stain purple.
What does gram-negative mean? ANS✔✔ Bacteria have less peptidoglycan,
but have more complex cell walls, use oxygen and stain pink.
How did mitochondria originate? ANS✔✔ From engulfed, originally free-living
prokaryotes that could detoxify oxygen.
True or False: All organisms can produce structural carbohydrates, but these
polymers cannnot be used as a source of energy by any organism. ANS✔✔
False: Only some organisms can produce structural carbohydrates, and only
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