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BY FRANK SHERWIN, M.A.
A virus is a very
tiny structure that, in its simplest definition, is some nucleic acid (either
DNA or RNA) packed inside a protein coat.
Viruses can’t live
on their own — they are designed to replicate inside living
cells.
Not all viruses are
bad.
The disease-causing
ones such as COVID-19 get all the news coverage.
Creation scientists
believe viruses were created in the beginning and that many underwent
mutations, such as the more common flu viruses, after the Curse.
Viruses are found
virtually everywhere, especially in the world’s oceans where their numbers are
astounding.
In just a few drops
of surface seawater there can be as many as 10 to 100 million of them per
milliliter.
Marine microorganisms,
including viruses, make up about 70% of the oceanic biomass, and all those tiny
creatures together are called the marine microbiome.
Biologists estimate
marine viruses are in concentrations of approximately three billion per ounce
of seawater.
The carbon
cycle is a critical part of Earth’s ecosystem and is the largest of
all biochemical cycles.
The microbial
community plays an important part in the marine carbon cycle. It’s an example
of God’s design found in complex ecological interactions.
The oceans also
have vast numbers of bacteria that are constantly reproducing in prodigious
numbers.
They would become
overwhelming in a relatively short time if it weren’t for specially designed
viruses called bacteriophages (or phages).
Under a powerful electron
microscope, these viruses (called T-even or E.
coli phages) look like tiny lunar landers with long spindly legs.
Bacteriophages are
significantly smaller than these bacteria.
The phages are
designed to “land” on their host’s surface and inject their genetic material
into the bacterial cell when the phage’s “legs” contract.
The cellular
machinery of the bacterium then starts to produce more phages due to new
instructions from the phage.
In a short time,
the bacterial cell breaks apart (lyses), releasing more T-even phages that then
go on to infect other oceanic bacteria.
This is called the lytic
cycle. In this way, the levels of bacteria are controlled by these
important phages, called femtoplankton.
There are also
other kinds of microorganisms in the oceans called cyanobacteria (formerly
called blue-green algae).
This large and
diverse group of bacteria contains the pigment chlorophyll and therefore can
undergo the complex process of photosynthesis.
Their vast numbers
are controlled by viruses called phycoviruses.
Taken together, we
can see the interactions of viruses with their hosts (bacteria, cyanobacteria,
and even fish) in the marine ecosystem as part of God’s grand design of
keeping the oceans and our world balanced and healthy.
Mr. Sherwin is Research Associate at the Institute for
Creation Research and earned his M.A. in zoology from the University of
Northern Colorado.
The
Institute for Creation Research (ICR) wants people to know that God’s Word
can be trusted in everything it speaks about—from how and why we were made, to
how the universe was formed, to how we can know God and receive all He has
planned for us.
After
50 years of ministry, ICR remains a leader in scientific research within the
context of biblical creation. Founded by Dr. Henry Morris in 1970, ICR exists
to conduct scientific research within the realms of origins and Earth history,
and then to educate the public both formally and informally through
professional training programs, through conferences and seminars around the
country, and through books, magazines, and media presentations.
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