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cell questions with answers
Cell definition - correct answersthe basic unit of biology.
who is responsible for creating the term cell? what was his first specimen? - correct answersrobert
hooke, cork
who is the originator of "the cell theory"? what year? - correct answersTheodore Schwann, 1839
what are the first two rules of the cell theory according to Schwann? - correct answers1. all organisms
consist of one or more cells.
2. The cell is the basic unit of structure for all organisms.
what was the third law added to the original cell theory post-creation? (Virchow's law) - correct
answersall cells arise only from preexisting cells.
compound microscopes were created in the 1830s; what three major improvements were added in
comparison to basic microscopes? - correct answers1. compound microscopes had two lenses
2. both magnification and resolution were improved.
3. structures only 1 micrometer in size could be seen clearly
using a compound microscope which scientist identified the nucleus? - correct answersRobert brown
who concluded that all plant tissues are composed of cells? - correct answersMatthias Schleiden
true or false: cytology deals primarily with cell membranes and observation using passive technique -
correct answersfalse: cytology deals primarily with cell structure and observation using optical
techniques.
, definition of biochemistry - correct answersfocuses on cellular structure and function.
Genetics definition - correct answersfocuses on information flow and heredity and includes sequencing
of the entire genome in numerous organisms.
genome definition - correct answersThe genome is the full set of DNA found in an organism.
creator of the micrometer (ūm)? equivalent to 10^ ? - correct answersDr. Greer, 10^-6
The light microscope allowed identification of? - correct answersnuclei, mitochondria, and chloroplasts
within the cell.
what is the "brightfield" in a light microscope? are the organisms seen her usually alive? - correct
answersthe field of vision in which light may pass through (blank) organisms are usually in the process of
dying or already dead.
who invented the microtome? when? what was it's purpose? - correct answersWilhelm his. SR.
mid 1800's
allowed preparation of very thin slices of samples
What is the limit of resolution? - correct answershow far apart objects must be to appear as distinct
The smaller the microscopes limit of resolution, the greater its ___? - correct answersresolving power
( ability to see fine details)
which measurement is equal to one-billionth of a meter (10^-9)? what is its symbol? - correct
answersnanometer(nm)
which scientific measurement is equal to about the size of a hydrogen atom? - correct answersAngstrom
(A)
cell questions with answers
Cell definition - correct answersthe basic unit of biology.
who is responsible for creating the term cell? what was his first specimen? - correct answersrobert
hooke, cork
who is the originator of "the cell theory"? what year? - correct answersTheodore Schwann, 1839
what are the first two rules of the cell theory according to Schwann? - correct answers1. all organisms
consist of one or more cells.
2. The cell is the basic unit of structure for all organisms.
what was the third law added to the original cell theory post-creation? (Virchow's law) - correct
answersall cells arise only from preexisting cells.
compound microscopes were created in the 1830s; what three major improvements were added in
comparison to basic microscopes? - correct answers1. compound microscopes had two lenses
2. both magnification and resolution were improved.
3. structures only 1 micrometer in size could be seen clearly
using a compound microscope which scientist identified the nucleus? - correct answersRobert brown
who concluded that all plant tissues are composed of cells? - correct answersMatthias Schleiden
true or false: cytology deals primarily with cell membranes and observation using passive technique -
correct answersfalse: cytology deals primarily with cell structure and observation using optical
techniques.
, definition of biochemistry - correct answersfocuses on cellular structure and function.
Genetics definition - correct answersfocuses on information flow and heredity and includes sequencing
of the entire genome in numerous organisms.
genome definition - correct answersThe genome is the full set of DNA found in an organism.
creator of the micrometer (ūm)? equivalent to 10^ ? - correct answersDr. Greer, 10^-6
The light microscope allowed identification of? - correct answersnuclei, mitochondria, and chloroplasts
within the cell.
what is the "brightfield" in a light microscope? are the organisms seen her usually alive? - correct
answersthe field of vision in which light may pass through (blank) organisms are usually in the process of
dying or already dead.
who invented the microtome? when? what was it's purpose? - correct answersWilhelm his. SR.
mid 1800's
allowed preparation of very thin slices of samples
What is the limit of resolution? - correct answershow far apart objects must be to appear as distinct
The smaller the microscopes limit of resolution, the greater its ___? - correct answersresolving power
( ability to see fine details)
which measurement is equal to one-billionth of a meter (10^-9)? what is its symbol? - correct
answersnanometer(nm)
which scientific measurement is equal to about the size of a hydrogen atom? - correct answersAngstrom
(A)
