What kills your brain cells?
Physical damage to the brain and other parts of the central nervous system can also
kill or disable neurons. - Blows to the brain, or the damage caused by a stroke, can
kill neurons outright or slowly starve them of the oxygen and nutrients they need to
survive.
Can you see a cell?
Smaller cells are easily visible under a light microscope. It's even possible to
make out structures within the cell, such as the nucleus, mitochondria and
chloroplasts. Light microscopes use a system of lenses to magnify an image.
How many atoms is a cell?
100 trillion atoms
Scientists estimate the average cell contains 100 trillion atoms
How do cells survive?
Cellular survival depends on an organism's ability to respond and adapt to
extracellular signals in its environment. Signal transduction is, therefore, an
important biologic process, allowing cells to react to a variety of these extracellular
stimuli and respond adaptively.
What controls cell growth?
Cell growth, proliferation and differentiation are controlled largely by selective
transcriptional modulation of gene expression in response to extracellular stimuli.
Much of this transcriptional control is governed by the action of sequence-specific
transcription factors.
What is the largest single cell?
Caulerpa taxifolia
Summary: Biologists used the world's largest single-celled organism, an aquatic alga
called Caulerpa taxifolia, to study the nature of structure and form in plants. It is a
single cell that can grow to a length of six to twelve inches.
Physical damage to the brain and other parts of the central nervous system can also
kill or disable neurons. - Blows to the brain, or the damage caused by a stroke, can
kill neurons outright or slowly starve them of the oxygen and nutrients they need to
survive.
Can you see a cell?
Smaller cells are easily visible under a light microscope. It's even possible to
make out structures within the cell, such as the nucleus, mitochondria and
chloroplasts. Light microscopes use a system of lenses to magnify an image.
How many atoms is a cell?
100 trillion atoms
Scientists estimate the average cell contains 100 trillion atoms
How do cells survive?
Cellular survival depends on an organism's ability to respond and adapt to
extracellular signals in its environment. Signal transduction is, therefore, an
important biologic process, allowing cells to react to a variety of these extracellular
stimuli and respond adaptively.
What controls cell growth?
Cell growth, proliferation and differentiation are controlled largely by selective
transcriptional modulation of gene expression in response to extracellular stimuli.
Much of this transcriptional control is governed by the action of sequence-specific
transcription factors.
What is the largest single cell?
Caulerpa taxifolia
Summary: Biologists used the world's largest single-celled organism, an aquatic alga
called Caulerpa taxifolia, to study the nature of structure and form in plants. It is a
single cell that can grow to a length of six to twelve inches.
