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Bio 230 PSU EXAM 1 Questions and Answers with Verified Solutions | Latest 2026 Update

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Bio 230 PSU EXAM 1 Questions and Answers with Verified Solutions | Latest 2026 Update

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Bio 230 PSU EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update




Q: Light traveling through something, like stained glass, and to your eyes; Sample
must be thin

Answer:
enough to allow the transmission of light; Staining improves contrast to better
identify
structures transmission light microscopy

Q: uses a beam of electrons traveling through a prepared specimen; Very thin
sections; Heavy

Answer:
metals are used in prep to improve contrast transmitted electron microscopy

Q: _ light for routine cell visualization

Answer:
transmitted

,Bio 230 PSU EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update




Q: _ or _ electron microscopy for high magnification work

Answer:
transmitted, scanning

Q: _ microscopy for visualizing specific cellular structures

Answer:
epiflourescence

Q: Considering the conservation of energy, light used to excite a fluorescent protein
has

Answer:
____________ energy compared to the emitted light more

, Bio 230 PSU EXAM 1 Questions and Answers with Verified Solutions |
Latest 2026 Update




Q: Electron scanning and transmission microscopy have ___________ resolution
because

Answer:
accelerated electrons have a ____________ wavelength compared to visible light.
higher,
shorter

Q: What is special about RNA that would suggest it evolved first?

Answer:
(2 things) catalyst and information storage

Q: no nucleus; transcription and translation occur almost simultaneously

Answer:
prokaryotes

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