-
hooke's discover of cells was made observing
dead plant cells
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the smallest units of life ina ll lliving things are
cells
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when the volume of a cell increases, its surface area,
increases at a slower rate
-
surface area is a n important factor in limiting cell growth because?
the cell may become too large to take in enough food and to remove enough wastes.
-
teh size to wicha cell can grow is limited by its
surface area
-
cell that can change its shape would be well suited for
moving to diffferent tissues through narrow openings
-
one difference between prokaryotes and eukaryotes is that
prokaryotes have no nuclear membrane
-
what is a charcteristic of prokaryotes?
they existed on earth before eukaryotes
-
which of the following is an example of prokaryotic cell?
a bacterium
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only eukaryotic cells have
membrane-bound organelles
-
plasma membranes are?
thing coverings that surrounded cells
-
the structure that regulates what enters and leaves the cell is called the
plasma membrane
-
the plasma membrane
encloses contents of a cell, allows material to enter and leave the cell, is selectively permeable.
-
a structue within a cell that performs a specific functin is called an
organnelle
-
a particularly active cell might contain large numbers of
minochondria
-
the golgi apparatus is an organelle that
labels the molecules made in the endoplasmic reticulum with tags that specify their destination, realses molecuels in vesicles, receives proteins and lipids form the endoplasmic reticulum.
-
on importnat organelle that helps manintain homeostasis by moving supplies from one part of the cell to the other side is the
endoplasmic retifulum
-
where is ATP produced?
mitochondrion
-
numerous hairlike organelles that protrude form teh surface of a cell and are paacked in tight rows are called
cilia
-
proteins are made on the
ribosomes
-
the packaging and distribution center of the cell is the
golgi apparatus
-
the double membrane surrounding the nucleus is called the
nuclear envelope
-
cell: plasma membrane::
nucleus: nuclear envelope
-
all of the following are found in both plant and animal cells except?
a cell wall
-
how are chloroplasts like mitochondria?
the both contain DNA.
-
THE ORGANELLES ASSOCIATED WITH PHOTOSYNTHESIS ARE THE
CHLOROPLASTS
-
the organelles in plant cells that contain a green pigment are the
chloroplasts
-
plant cells have a large membrane bound space in wich water, waste products, and nutrients are stored. This place is known as a
central vacuole
-
which of the following pairs contains unrelated items?
cell wall-animal cell
-
plant cells..?
have a cell wall instead of a plasma membrane.
-
which of the following is the correct order of organizatin of structures inl iving things, from simplest to most complex?
cells, tissues, organs, organ systems
-
teh statement "cells are produced only from existing cells" is part of the.....
cell theory
-
the ratio of surface area to _____ puts limitations ona cell's size
volume
-
eukaryotic cells are much larger and have more specialized functins than prokaryotic cells bcause they contain_____wich carry out speacialized activities.
membrane bound
-
a cell with a well-defined nucleus and cytoplasm suurrounded by a plasma membrane is an______cell
eukaryotic
-
a plasma membrane is said to be____ permeable becaue it allows the passage of some solutes and not others.
selectiviely
-
______molecules have heads and tails that re found in the plasma membrane
phospholipid
-
scientists have discovered that cells contain smaller specialized structures known as _______.
organnele
-
the sperical organnelles that are the site of protein synthesis in a cell are the_______.
ribosomes.
-
teh mesh like network of protein fibers that supports the shape of the cell is caclled the _______.
cytoskeleton
-
the fluid protion of the cytoplasm is called the______
cytosol
-
photosynthesis takes place in the _____________ of plant cells
cytoplasm
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both plant and animal cells have plasma membrans. In addition, plant cells are surrounded by a ________.
cell wall.
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Matthias Schleiden worked with _______cells and Theodor Schwann worked with _____ cells.
-
some plants produce a _________ between the plasma membrane and hte primaryr clel wall
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