BIOL 3444 EXAM 1 2025/2026 EXAM
QUESTIONS AND ANSWERS | 100%
1
PASS
Which term is used to refer to a wave's rate of vibration? - 🧠 ANSWER
✔✔B. frequency
On the figure, which letter represents a refracted ray of light? - 🧠 ANSWER
✔✔C (BUT D on test)
On the electromagnetic spectrum, which type of wave has the shortest
wavelength? - 🧠 ANSWER ✔✔A. cosmic ray
Dyes are often used during microscopy to increase which of the following?
- 🧠 ANSWER ✔✔A. contrast
Which of the following was the first to use the term "cells"? - 🧠 ANSWER
✔✔A. Robert Hooke
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,Which of the following is the typical magnification of an object viewed using
a 10× ocular lens and a 100× objective lens on a brightfield microscope? -
2
🧠 ANSWER ✔✔D. 1000×
Most modern microscopes have two eyepieces, meaning that they are
which of the following? - 🧠 ANSWER ✔✔A. binocular
An annular stop is used for which type of microscopy? - 🧠 ANSWER ✔✔D.
phase contrast
Which of the following is the specific name for a stain that colors the
background but not the specimen? - 🧠 ANSWER ✔✔D. negative stain
Which type of microscopy would work best for viewing internal cell
structures? - 🧠 ANSWER ✔✔D. transmission electron microscopy
The Gram-staining procedure is best described as which of the following? -
🧠 ANSWER ✔✔B. differential staining
When there is a substantial difference in refractive index between two
materials, which of the following describes what will happen to light passing
from one material to the other? - 🧠 ANSWER ✔✔B. It will undergo a large
amount of refraction.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, In microscopy, the focal length refers to which of the following? - 🧠
ANSWER ✔✔D. the distance to the image point (at which all light entering
3
a lens is parallel)
Which of the following are pigments used in microscopy to absorb and
reflect light? - 🧠 ANSWER ✔✔B. chromophores
Negative staining is the standard approach used to visualize which
structure(s)? - 🧠 ANSWER ✔✔A. capsules
Which is a standard mordant used in flagella staining? - 🧠 ANSWER ✔✔D.
tannic acid
Which of the following pairs are common acid-fast staining techniques? - 🧠
ANSWER ✔✔C. Ziehl-Neelsen and Kinyoun
Which is the primary stain used in the Ziehl-Neelsen technique? - 🧠
ANSWER ✔✔B. carbolfuchsin
Which is the correct order of steps in Gram staining? - 🧠 ANSWER ✔✔B.
crystal violet stain, Gram's iodine mordant, ethanol decolorization, safranin
counterstain
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
QUESTIONS AND ANSWERS | 100%
1
PASS
Which term is used to refer to a wave's rate of vibration? - 🧠 ANSWER
✔✔B. frequency
On the figure, which letter represents a refracted ray of light? - 🧠 ANSWER
✔✔C (BUT D on test)
On the electromagnetic spectrum, which type of wave has the shortest
wavelength? - 🧠 ANSWER ✔✔A. cosmic ray
Dyes are often used during microscopy to increase which of the following?
- 🧠 ANSWER ✔✔A. contrast
Which of the following was the first to use the term "cells"? - 🧠 ANSWER
✔✔A. Robert Hooke
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,Which of the following is the typical magnification of an object viewed using
a 10× ocular lens and a 100× objective lens on a brightfield microscope? -
2
🧠 ANSWER ✔✔D. 1000×
Most modern microscopes have two eyepieces, meaning that they are
which of the following? - 🧠 ANSWER ✔✔A. binocular
An annular stop is used for which type of microscopy? - 🧠 ANSWER ✔✔D.
phase contrast
Which of the following is the specific name for a stain that colors the
background but not the specimen? - 🧠 ANSWER ✔✔D. negative stain
Which type of microscopy would work best for viewing internal cell
structures? - 🧠 ANSWER ✔✔D. transmission electron microscopy
The Gram-staining procedure is best described as which of the following? -
🧠 ANSWER ✔✔B. differential staining
When there is a substantial difference in refractive index between two
materials, which of the following describes what will happen to light passing
from one material to the other? - 🧠 ANSWER ✔✔B. It will undergo a large
amount of refraction.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, In microscopy, the focal length refers to which of the following? - 🧠
ANSWER ✔✔D. the distance to the image point (at which all light entering
3
a lens is parallel)
Which of the following are pigments used in microscopy to absorb and
reflect light? - 🧠 ANSWER ✔✔B. chromophores
Negative staining is the standard approach used to visualize which
structure(s)? - 🧠 ANSWER ✔✔A. capsules
Which is a standard mordant used in flagella staining? - 🧠 ANSWER ✔✔D.
tannic acid
Which of the following pairs are common acid-fast staining techniques? - 🧠
ANSWER ✔✔C. Ziehl-Neelsen and Kinyoun
Which is the primary stain used in the Ziehl-Neelsen technique? - 🧠
ANSWER ✔✔B. carbolfuchsin
Which is the correct order of steps in Gram staining? - 🧠 ANSWER ✔✔B.
crystal violet stain, Gram's iodine mordant, ethanol decolorization, safranin
counterstain
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
