Classifying Life By Cellular Structure Question Preview (ID: 16160)
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Two of the tenets of the cell theory are: All living things consist of one or more cells, and the cell is the smallest unit of life that displays all of the characteristics of life. Which is the third tenet?
a) All cells transform energy.
b) All cells have cell membranes.
c) All cells come from pre-existing cells.
d) All cells can become any other type of cell.
What instrument was essential to the development of the cell theory?
a) the camera
b) the test tube
c) the x-ray machine
d) the light microscope
What do eukaryote cells have that prokaryotes NEVER have?
a) DNA
b) Ribosomes
c) Cell membranes
d) membrane-bound nucleus
How can plasmid be described?
a) a small organelle
b) a small loop of DNA
c) a prokaryotic ribosome
d) a prokaryotic membrane
According to the endosymbiotic hypothesis, why did the large cells not destroy the small aerobic cells they engulfed?
a) because they were so tough
b) because they provided energy
c) because they were parasites not food
d) because they did not know they were there
Which of the following is evidence for the endosymbiotic origin of eukaryotic cells?
a) mitochondria have flagella
b) mitochondria have single membranes
c) chloroplasts reproduce by binary fission
d) existing eukaryote cells have bacterial endosymbionts
Which of the following is shared by both plant and animal cells?
a) nuclei
b) cell walls
c) centrioles
d) central vacuoles
Which of the following is found in an animal cell, but not in a plant cell?
a) nuclei
b) centrioles
c) mitochondria
d) central vacuole
Which scientist looked closely at cork in 1663, seeing a structure similar to his room at the monastery, and called it a cell?
a) Hans Janssen
b) Robert Hooke
c) Lorenz Oken
d) Rudolph Virchow
Which scientist collaborated with Theodor Schwann developing the original Cell Theory?
a) Anton van Leeuwenhoek
b) Robert Brown
c) Matthias Schleiden
d) Rudolph Virchow
The discovery of the cell is most directly linked to the
a) development of the microscope
b) early studies of disease and its causes
c) observations of large, unicellular organims
d) reproduction or organisms in a lab setting
Which characteristics of prokaryotic organisms makes them different from eukaryotes?
a) prokaryotes do not have organelles with membranes.
b) prokaryotes do not have chromosomes
c) prokaryotes are made of cells
d) prokaryotes have DNA
Which of the following organisms does not have a cell wall?
a) plant
b) human
c) bacteria
d) fungi
Animals have all of the following except
a) mitochondria
b) chloroplasts
c) a nucleus
d) golgi apparatus
All of the structures are only found in plant cells EXCEPT
a) cells walls
b) chloroplasts
c) large vacuoles
d) mitochondria
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