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
Tweet of the Week: Candy Anatomy
(MedPage Today) -- Here's what happens when a med student...
medpagetoday.com
Someone Wants All That FitBit Data
(MedPage Today) -- Dietitians would be glad to evaluate data...
medpagetoday.com
Teamwork Cuts In-Hospital Observation Time
(MedPage Today) -- Lengths of stay cut substantially at one...
medpagetoday.com
New approaches for early diagnosis of Alzheimer's
Mild cognitive impairment, or MCI, may be one of Alzheimer's...
medicalxpress.com
Endovascular Clot Removal Wins Again (CME/CE)
(MedPage Today) -- Reduced disability with thrombectomy in REVASCAT trial....
medpagetoday.com
Doc Facebook, Avoiding Burnout: Healthcare Career Insights
(MedPage Today) -- Must-reads about the latest news and trends...
medpagetoday.com
Scope wins award for its “creative and effective approach” to promoting academic medicine
We’re happy to announce that Scope is a 2015 GIA...
scopeblog.stanford.edu
Kids with ADHD must squirm to learn, study says
For decades, frustrated parents and teachers have barked at fidgety...
medicalxpress.com
Hospital Leader: An Interview With Toronto's Adina Weinerman, MD
(MedPage Today) -- What strategies can streamline code status documentation?...
medpagetoday.com
Friday Feedback: What's Next for Medicare?
(MedPage Today) -- SGR has been repealed, but what does...
medpagetoday.com
USDA confirms bird flu at 5th South Dakota turkey farm
Five commercial turkey farms in South Dakota have now been...
medicalxpress.com
Glaxo recalls flu vaccine due to potency problem
GlaxoSmithKline is recalling remaining doses of a popular four-in-one flu...
medicalxpress.com
From beef tongue to beef on weck, menus tell culinary story
Before beef on weck and chicken wings became staples of...
medicalxpress.com
Cohen's Brain Bits: Dream On
(MedPage Today) -- REM sleep behaviors offer opportunity for early...
medpagetoday.com
Artificial blood vessel lets researchers better assess clot removal devices
Researchers at the University of California, San Diego School of...
medicalxpress.com
Mortality Equal With Simultaneous vs. Staged Hip Replacement (CME/CE)
(MedPage Today) -- Survival similar after 30 and 90 days,...
medpagetoday.com
Sugar Suppresses Body's Stress Response (CME/CE)
(MedPage Today) -- But soothing effect could have damaging long-term...
medpagetoday.com
Remembering the strange vigils of war through poetry and dance
In his Civil War-era poem, “Vigil Strange I Kept on...
scopeblog.stanford.edu
Review explores challenges of ocular antioxidants for cataracts
(HealthDay)—Delivery of antioxidants to the eye may be a therapeutic...
medicalxpress.com
Firm Claims Biotin Drug Improves Function in Progressive MS
(MedPage Today) -- One-year study meets primary disability-based endpoint, company...
medpagetoday.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

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

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