BIO 150- NVCC Final Lecture Exam questions with
verified answers
Ch.1
List the 6 common bacterial shapes Ans✓✓-Coccus
Bacillus
Vibrio
Cocco-bacillus
Spirillum
Spirochete
Ch. 1
Which ones are spherical? Curved? Rod-Shaped? Ans✓✓-Spherical: Coccus
Curved: Spirillum, Spirochete, Vibrio
Rod-shaped: Bacillus
Ch. 1
What is the major defining factor characteristic of eukaryotes? Ans✓✓-Contains a
nucleus
Ch. 1
Name 2 types of protists? Ans✓✓-Algae + Protozoa
Ch. 1
Which one has cells surrounded by cell walls of cellulose? Ans✓✓-Plants
,Ch. 1
Agar, a gel used to grow microorganisms in a Petri dish is derived from ______?
Ans✓✓-Algae
Ch. 2
Define the following:
- Wavelength
- Amplitude
- Frequency Ans✓✓-Wavelength: distance between 2 points
Amplitude: height or depth of each peak
Frequency: rate of vibration OR # of wavelengths
Ch. 2
Describe the following terms:
- Magnification
- Resolution
- Contrast Ans✓✓-Magnification: enlarging the image
Resolution: to be able to tell that 2 separate points are indeed separated
Contrast: detecting different structures in a specimen
Ch. 2
Define numerical aperture Ans✓✓-The measure of a len's ability to gather light
*the higher the numerical aperture, the better the resolution*
,Ch. 2
Name 2 factors that affect resolution Ans✓✓-1) shortening the wavelength
2) increasing the numerical aperture
Ch. 2
Describe the relationship between numerical aperture and resolution Ans✓✓-
The higher the numerical aperture, the better the resolution
Ch. 2
Describe the relationship between wavelength and resolution Ans✓✓-Short
wavelengths= increased resolution power
Ch. 2
The 2 types of electron microscopes are _______ and _________ Ans✓✓-SEM
(scanning electron microscope) and TEM (transmission electron microscope)
Ch. 2
An electron microscope has a higher resolution, why? Ans✓✓-It uses short-
wavelength electron beams, instead of light
Ch. 2
Which of the following techniques of EM is used to observe the 3D surface details
of the specimen? Ans✓✓-TEM
Ch. 2
, Which of the techniques creates an image defecting by electrons that are passing
through the specimen? Ans✓✓-TEM
Ch. 2
Which of the techniques of EM offers valuable inform action about detailed
internal structures of the specimen? Ans✓✓-SEM
Ch. 2
Which of the techniques creates an image by detecting electrons reflected from
the surface of the sample? Ans✓✓-SEM
Ch. 3
What does the modern endosymbiotic theory state? Ans✓✓-That mitochondria
and chloroplasts arose as a result of prokaryotic cells establishing a symbiotic
relationship within a eukaryotic host
Ch. 3
What is plasmolysis? Ans✓✓-contraction of plant cells, which lead to shrinking
Ch. 3
A glycocalyx is a sugar coat, of which there are 2 important types:
_______ and _________ Ans✓✓-Capules and Slime layers
Ch. 3
Which of the 2 types of glycocalyx types contribute to a microbe's pathogenicity?
Ans✓✓-Capsule and slime layer
verified answers
Ch.1
List the 6 common bacterial shapes Ans✓✓-Coccus
Bacillus
Vibrio
Cocco-bacillus
Spirillum
Spirochete
Ch. 1
Which ones are spherical? Curved? Rod-Shaped? Ans✓✓-Spherical: Coccus
Curved: Spirillum, Spirochete, Vibrio
Rod-shaped: Bacillus
Ch. 1
What is the major defining factor characteristic of eukaryotes? Ans✓✓-Contains a
nucleus
Ch. 1
Name 2 types of protists? Ans✓✓-Algae + Protozoa
Ch. 1
Which one has cells surrounded by cell walls of cellulose? Ans✓✓-Plants
,Ch. 1
Agar, a gel used to grow microorganisms in a Petri dish is derived from ______?
Ans✓✓-Algae
Ch. 2
Define the following:
- Wavelength
- Amplitude
- Frequency Ans✓✓-Wavelength: distance between 2 points
Amplitude: height or depth of each peak
Frequency: rate of vibration OR # of wavelengths
Ch. 2
Describe the following terms:
- Magnification
- Resolution
- Contrast Ans✓✓-Magnification: enlarging the image
Resolution: to be able to tell that 2 separate points are indeed separated
Contrast: detecting different structures in a specimen
Ch. 2
Define numerical aperture Ans✓✓-The measure of a len's ability to gather light
*the higher the numerical aperture, the better the resolution*
,Ch. 2
Name 2 factors that affect resolution Ans✓✓-1) shortening the wavelength
2) increasing the numerical aperture
Ch. 2
Describe the relationship between numerical aperture and resolution Ans✓✓-
The higher the numerical aperture, the better the resolution
Ch. 2
Describe the relationship between wavelength and resolution Ans✓✓-Short
wavelengths= increased resolution power
Ch. 2
The 2 types of electron microscopes are _______ and _________ Ans✓✓-SEM
(scanning electron microscope) and TEM (transmission electron microscope)
Ch. 2
An electron microscope has a higher resolution, why? Ans✓✓-It uses short-
wavelength electron beams, instead of light
Ch. 2
Which of the following techniques of EM is used to observe the 3D surface details
of the specimen? Ans✓✓-TEM
Ch. 2
, Which of the techniques creates an image defecting by electrons that are passing
through the specimen? Ans✓✓-TEM
Ch. 2
Which of the techniques of EM offers valuable inform action about detailed
internal structures of the specimen? Ans✓✓-SEM
Ch. 2
Which of the techniques creates an image by detecting electrons reflected from
the surface of the sample? Ans✓✓-SEM
Ch. 3
What does the modern endosymbiotic theory state? Ans✓✓-That mitochondria
and chloroplasts arose as a result of prokaryotic cells establishing a symbiotic
relationship within a eukaryotic host
Ch. 3
What is plasmolysis? Ans✓✓-contraction of plant cells, which lead to shrinking
Ch. 3
A glycocalyx is a sugar coat, of which there are 2 important types:
_______ and _________ Ans✓✓-Capules and Slime layers
Ch. 3
Which of the 2 types of glycocalyx types contribute to a microbe's pathogenicity?
Ans✓✓-Capsule and slime layer
