Quantcast Figure 4-11. The 5 nitrogen bases found in DNA. - Fundamentals of X-Ray Physics

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
a. Somatic Cells. Somatic cells are those of a specific individual tissue such as
heart, lung, or liver. Their functions provide life for an individual. Somatic cells give
their daughter cells operating instructions to act like they themselves acted.
b. Gonadal Cells. Gonadal cells ensure a species' continuance. When
creating a new member of the species, the operating or genetic instructions of two cells
interweave, add, subtract, and modify. If either cell has been previously modified, it
cannot pass on the genetic instructions it should.
4-22. DEOXYRIBONUCLEIC ACID AND RIBONUCLEIC ACID
All cells have one common and extremely vital characteristic: they pass on to
their daughter cells operating instructions which are extremely detailed, highly complex,
and an exact duplicate of the instructions they received from their parent cells.
Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are substances found in all
cells and serve as blueprints for cell reproduction.
a. Deoxyribonuclei Acid Molecule. The DNA molecule is a double helix that has
two important functions--replication and control of cellular activities. The fundamental unit
of DNA is the nucleotide, which consists of a phosphate group, a 5-carbon sugar, and a nitrogen
base. There are four nitrogen bases found in DNA--guanine, cytosine, adenine, and
thymine. They are shown in figure 4-11 with different shapes for illustrative purposes.
One end of each nitrogen base is identical to the others. It fits the 5-carbon sugar
perfectly, but it will not fit the phosphate group. The nitrogen bases fit each other only in
specific combinations: guanine with cytosine and adenine with thymine.
Figure 4-11. The 5 nitrogen bases found in DNA.
MD0950
4-18



Medical News
Standing Provides Real Advantages Over Sitting (CME/CE)
(MedPage Today) -- Standing may improve blood glucose and serum...
medpagetoday.com
Secrets to the Job Hunt: Healthcare Career Insights
(MedPage Today) -- Must-reads about the latest news and trends...
medpagetoday.com
Grand Roundup: Top posts of July
It’s time to look back at this month’s five-most read stories...
scopeblog.stanford.edu
Gene therapy for botulism
Gene therapy could be more effective than existing treatments for...
medicalxpress.com
Tool helps public health agencies prioritize health risks
Public health agencies across the globe are challenged with preventing...
medicalxpress.com
Medicaid's Transparency, Specialty Access Need Fixing
(MedPage Today) -- Government Accountability Office report highlights challenges facing...
medpagetoday.com
Tweet of the Week: It Just May Be a Heart Attack
(MedPage Today) -- Actress Elizabeth Banks stars in public service...
medpagetoday.com
Gout medications might be useful in treating alcohol-induced liver disease
New research in mice shows that two commonly used gout...
medicalxpress.com
UK study finds diaphragm pacing not beneficial to MND patients
A pioneering trial investigating the safety and efficacy of diaphragm...
medicalxpress.com
Using modern human genetics to study ancient phenomena
We humans are obsessed with determining our origins, hoping to...
medicalxpress.com
Even educated fleas do it ... but is animal sex spicier than we thought?
There's an idea circulating that humans are the only animal...
medicalxpress.com
Researchers develop tool to help child welfare providers analyze data
University of Kansas researchers have developed a web-based tool that...
medicalxpress.com
Are we ready for a test that could 'pre-diagnose' autism in babies?
For children with autism, early intervention is critical. Therapies and...
medicalxpress.com
Improved memory thanks to irregular sleep-wake patterns
If you've had a good night's sleep, you are mentally...
medicalxpress.com
CV Risk in RA: Is a New Measurement Tool the Answer? (CME/CE)
(MedPage Today) -- Risk calculator adds disease-related factors to traditional...
medpagetoday.com
Findings in research on photoaging could reverse negative impact of ultraviolet radiation
While all human organs undergo normal, chronological aging, human skin...
medicalxpress.com
Stanford grad students design new tools for learning about nutrition, feelings
Mushrooms and tomatoes, veggies that are often reviled by preschoolers,...
scopeblog.stanford.edu
HPV Vaccine Rates Still Lag (CME/CE)
(MedPage Today) -- Mild improvements seen as "patchwork progress"...
medpagetoday.com
Care in the Clinic, on the Drop Zone
(MedPage Today) -- The life of a U.S. Army physician...
medpagetoday.com
Researchers identify new cancer marker and possible therapeutic target for breast cancer
A new way to detect - and perhaps treat -...
medicalxpress.com
 


Privacy Statement - Copyright Information. - Contact Us

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +