Biol 373- Exam #1 || Solved Correctly.
Chapter 1 - Evolution
Robert Hooke (1665) correct answers observed compartments in cork, under a microscope, and
first named them cells
resolution correct answers -resolving power (ability to see fine detail)
-the ability to distinguish two adjacent objects or points from one another
Resolving power (RP) = correct answers Wavelength of light in nm / 2 x Numerical aperture
-Shorter wavelengths provide a better resolution
What is the descriptive nature of cell biology correct answers focus on observation, with little
emphasis on explanation
Compound microscopes (1830s) correct answers -These had two lenses
-Both magnification and resolution were improved
-Structures only 1 micrometer in size could be seen clearly
Robert Brown correct answers identified the nucleus, a structure inside plant cells
Matthias Schleiden correct answers concluded that all plant tissues are composed of cells
Thomas Schwann correct answers concluded that all animal tissues are composed of cells;
postulated the cell theory (1839)
, What is the cell theory? correct answers 1. All organisms consist of one or more cells (Schwann
1839)
2. The cell is the basic unit of structure for all organisms (Schwann 1839)
3. All cells arise only from preexisting cells (Virchow 1855)
Cytology correct answers focuses mainly on cellular structure and emphasizes optical techniques
Biochemistry correct answers focuses on cellular structure and function
Genetics correct answers focuses on information flow and heredity and includes sequencing of
the entire genome (all of the DNA) in numerous organisms
micrometer (μm) correct answers one millionth of a meter (10-6 m)
nanometer (nm) correct answers one-billionth of a meter (10-9 m)
microtome (mid-1800s) correct answers -allowed preparation of very thin slices of samples
limit of resolution correct answers how far apart objects must be to appear as distinct
The smaller the microscope's limit of resolution, the greater its correct answers resolving power
Electron Microscopy (Ruska 1930's) correct answers -Focused electron beam
-Wavelength = 6pm
-100,000 X less than red visible light
Fredrich Wöhler (1828) correct answers -showed that a compound made in a living organism
(urea) could be synthesized in the lab
Chapter 1 - Evolution
Robert Hooke (1665) correct answers observed compartments in cork, under a microscope, and
first named them cells
resolution correct answers -resolving power (ability to see fine detail)
-the ability to distinguish two adjacent objects or points from one another
Resolving power (RP) = correct answers Wavelength of light in nm / 2 x Numerical aperture
-Shorter wavelengths provide a better resolution
What is the descriptive nature of cell biology correct answers focus on observation, with little
emphasis on explanation
Compound microscopes (1830s) correct answers -These had two lenses
-Both magnification and resolution were improved
-Structures only 1 micrometer in size could be seen clearly
Robert Brown correct answers identified the nucleus, a structure inside plant cells
Matthias Schleiden correct answers concluded that all plant tissues are composed of cells
Thomas Schwann correct answers concluded that all animal tissues are composed of cells;
postulated the cell theory (1839)
, What is the cell theory? correct answers 1. All organisms consist of one or more cells (Schwann
1839)
2. The cell is the basic unit of structure for all organisms (Schwann 1839)
3. All cells arise only from preexisting cells (Virchow 1855)
Cytology correct answers focuses mainly on cellular structure and emphasizes optical techniques
Biochemistry correct answers focuses on cellular structure and function
Genetics correct answers focuses on information flow and heredity and includes sequencing of
the entire genome (all of the DNA) in numerous organisms
micrometer (μm) correct answers one millionth of a meter (10-6 m)
nanometer (nm) correct answers one-billionth of a meter (10-9 m)
microtome (mid-1800s) correct answers -allowed preparation of very thin slices of samples
limit of resolution correct answers how far apart objects must be to appear as distinct
The smaller the microscope's limit of resolution, the greater its correct answers resolving power
Electron Microscopy (Ruska 1930's) correct answers -Focused electron beam
-Wavelength = 6pm
-100,000 X less than red visible light
Fredrich Wöhler (1828) correct answers -showed that a compound made in a living organism
(urea) could be synthesized in the lab
