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Cards (65)
What is the primary focus of General Biology 1 course?
Understanding biology at
cellular
and
molecular
levels
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What are the learning outcomes of the General Biology 1 course?
Knowledge of
cell theory
,
organelles
, and
metabolism
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What are the three tenets of cell theory?
All
organisms
are made of cells, cells are
basic units
, cells arise from
pre-existing cells
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Why is there no universally accepted definition of life?
Some consider non-
cellular
entities like
viruses
as living
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Who is credited with the discovery of cells?
Robert Hooke
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What did Robert Hooke observe under the microscope?
Thin slices of
cork
with
tiny
pores
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How did Hooke's observations contribute to cell theory?
He identified cells as
basic structural units
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What was the magnification of Hooke's microscope?
300x
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What advancements in microscopy occurred after Hooke?
Leeuwenhoek
improved
lens technology
for higher
magnification
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What did Anton van Leeuwenhoek discover using his microscope?
Motile
microorganisms
he called "
animalcules
"
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How did Leeuwenhoek's findings challenge existing theories?
He provided evidence against
spontaneous generation
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What was the significance of Leeuwenhoek's observations of sperm cells?
It demonstrated the
fertilization process
requires sperm to enter egg
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What did Hooke name the tiny pores he observed?
Cells
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What did Hooke's observations lack due to low magnification?
Details of
internal
cell structures and
organelles
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What did Hooke observe on leather under his microscope?
Mould that was
bluish
in color
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What was the misconception Hooke had about the cells he observed?
He thought
they
were
not
alive
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How did Leeuwenhoek's work differ from Hooke's in terms of cell observation?
Leeuwenhoek observed
living cells
and motility
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What did Leeuwenhoek's microscope achieve in terms of magnification?
270x
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What was the impact of the invention of the electron microscope?
It allowed viewing objects smaller than
visible light
wavelengths
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How did the development of microscopes influence biology?
It enabled the discovery and study of
cells
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What are the major chapters covered in General Biology 1?
Cell Theory
Cell Structure and Functions
Prokaryotic and Eukaryotic Cells
Cell Cycle
Transport Mechanisms
Biological Molecules
ATP-ADP Cycle
Photosynthesis
Respiration
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What are the key components of the cell theory?
All living
organisms
are composed of cells
The cell is the
basic unit
of structure and organization
Cells arise from
pre-existing
cells
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What advancements in microscopy contributed to the discovery of cells?
Robert Hooke's
compound microscope
Anton van Leeuwenhoek's
improved lenses
Development of
electron microscopes
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What were the contributions of Hooke and Leeuwenhoek to cell biology?
Hooke: Discovered and named
cells
Leeuwenhoek: Observed living cells and
motility
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What quality of life is associated with motility?
It indicates
living organisms
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What term did Leeuwenhoek use to describe microorganisms?
Animalcules
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What types of organisms did Leeuwenhoek's "animalcules" include?
Protozoa
and
unicellular
organisms
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What significant discovery did Leeuwenhoek make regarding red blood cells?
He provided the first
accurate
description
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What led Leeuwenhoek to study "pepper water" in 1676?
His
interest
in the
sense
of
taste
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What type of cells did Leeuwenhoek discover for the first time?
Sperm cells
of animals and humans
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What process did Leeuwenhoek observe regarding fertilization?
Sperm cell
entering the
egg cell
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What theory did Leeuwenhoek's discovery put an end to?
Spontaneous generation
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Who was the first to confirm Leeuwenhoek's observations?
Hooke
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Why were animal tissues observed after plant tissues?
Animal tissues were
fragile
and hard to prepare
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Who connected the fundamental unit of life to cellular structure?
Henri Dutrochet
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What did Dutrochet claim about cells?
Cells are both
structural
and
physiological
units
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What are the three tenets of cell theory?
All living organisms are composed of one or more cells
The cell is the most
basic unit
of life
All cells arise only from
pre-existing
cells
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Who are credited with developing cell theory?
Theodor Schwann
and
Matthias Schleiden
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What did Schleiden suggest about plant structure in 1839?
Every structural part is made of
cells
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What crystallization process did Schleiden claim?
Cells
are
made
by
crystallization
from
other
cells
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See all 65 cards
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