
Cells Review (Cell Theory - Transport)
Presentation
•
Biology, Science
•
9th - 10th Grade
•
Medium
+2
Standards-aligned
Laura Rodriguez
Used 21+ times
FREE Resource
18 Slides • 16 Questions
1
Cells Review
Cell Theory - Transport
2
Discovering the Cell
Hooke used microscope to see cork cells - gave the cell its name
Leeuwenhoek - First to see living cells - called them "animalcules"
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Discovery of Cells
Scientists who worked with different organisms - used microscopes to view cells in different tissues
Developed the Cell Theory
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Prokaryotic vs Eukaryotic Cells
Prokaryotic cells are older, smaller, lack nucleus and organelles
Eukaryotic cells are younger, larger, and have a nucleus and membrane bound organelles
All cells have cytoplasm, cell membrane, DNA and ribosomes
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Endosymbiosis
Eukaryotic cells evolved from prokaryotic cells
Engulfed prokaryotic cells became chloroplasts and mitochondria
Evidence: separate DNA, size, separate division
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Multiple Select
What are evidence to support endosymbiotic theory?
Mitochondria is found outside the cells
Mitochondria and chloroplast can divide independently
Mitochondria and chloroplast have their own cell membrane
Mitochondria and chloroplast have their own genetic material
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Multiple Choice
____________ & _________________ are organelles that definitely arose from endosymbiosis.
Nucleus and cell membrane
Chloroplast and mitochondria
Mitochondria and nucleus
Cell wall and chloroplast
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Multiple Choice
The theory of Endosymbiosis explains
The origin of eukaryotes
How bacteria live
How species develop
Why cells rely on one another
12
Multiple Choice
Which of these is NOT a component of the cell theory?
all living things are made of cells
cells form through spontaneous generation
cells are the basic functional structure of life
cells come from preexisting cells
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Multiple Choice
An organism has a cell wall, free-floating DNA, and ribosomes. What is it?
a plant
an animal
a fungus
a prokaryote
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Multiple Choice
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Multiple Choice
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Multiple Choice
Which organelle is only found in plants and is the site of photosynthesis?
Chloroplast
Chlorophyll
Golgi Apparatus
Ribosome
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Multiple Choice
Which is a difference between plant and animal cells?
Molecules can only pass into an animal cell because it has a cell membrane.
A plant cell has a well defined shape, because it has a cell wall.
A plant cell can store genetic information, because it has a nucleus.
An animal cell can produce energy, because it has mitochondria.
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Cell Membrane - 2 Key Qualities
They are semipermeable (only certain materials may freely cross)
They are selective (membrane proteins may regulate the passage of materials that cannot freely cross)
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Passive Transport
Simple diffusion through the lipid bilayer
Facilitated diffusion through a protein channel
Does not require energy
Moves from high concentration to low concentration
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Active Transport
Moves molecules through a protein pump
Requires energy (ATP)
Moves materials from low concentration to high concentration
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Tonicity
The ability of a solution to cause a cell to gain or lose water
Mostly depends on the concentration of a solute or salts on both sides of the membrane
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Multiple Choice
During diffusion, particles move from
High to low concentration
Low to high concentration
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Multiple Choice
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Multiple Choice
Where are channel proteins found, and what do they do?
in the nucleus; make DNA
in the cell membrane; allow certain substances in and out
in the chloroplast; make sugar
around the vacuole; control pressure
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Multiple Choice
Where in a cell is this structure found, and what is its purpose?
around the nucleus; protein production
around the cell; protection and transport
near the nucleus; package molecules for transport
in plant cells only; photosynthesis
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Multiple Choice
When cells are placed in a hypertonic sugar solution, what will likely happen?
water will leave the cell
water will enter the cell
the amount of water will stay the same
sugar will enter the cell
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Multiple Choice
Diffusion is when the the particles move:
From A to B
From B to A
from both sides equally
not at all
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Multiple Choice
"Active transport" is when a cell:
absorbs materials from Low to High concentrations without energy
absorbs materials from High to Low concentrations without energy
forces materials from Low to High concentrations using energy
does nothing
Cells Review
Cell Theory - Transport
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