<span>Planaria have a huge regenerative power because of the presence of adult stem cells called neoblasts. If you cut Planaria into pieces, each piece can regenerate into a complete organism and that’s a form of asexual reproduction. Cells which are located on the wound site proliferate to form a blastema-mass of cell that will grow into a new organ. Those cells will differentiate into new tissues and regenerate the missing parts.</span>
<span>The similar thing is happening with starfish.</span>
While awaiting surgery, a client with a long history of Crohn's disease is receiving total parenteral nutrition (TPN) on an outpatient basis. The nurse teaches the client that TPN helps to prepare for surgery by decreasing the fecal bulk.
Further Explanation:
Crohn's disease is referred to as inflammatory bowel disease. It develops inflammation inside the digestive tract and can lead to pain in abdominal pain, fatigue, severe diarrhea, malnutrition, and weight loss. Mainly inflammation in digestive tract can spread into the deep layers of bowel tissue. It can be debilitating, painful and may lead to life-threatening problems.
Total parenteral nutrition is an alternative way of administering intravenous therapy or feeding patient. TPN acts by decreasing bowel stimulation and fecal bulk. It helps in providing rest to the bowl while waiting for surgery. It doesn’t basically prevent bowel infection. Parenteral nutrition provides the necessary nutrients for the survival of the patient. In general, glucose, lipids, minerals, and amino acids are administered parenterally.
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Answer Details:
Grade: High School
Subject: Biology
Topic: Total parenteral nutrition
Keywords:
Total parenteral nutrition, glucose, lipid, amino acid, TPN, life-threatening, inflammatory bowel disease, pain, fatigue, diarrhea, weight loss, Crohn's disease.
Answer:
The correct option is : cells containing empty plasmid vectors
Explanation:
The blue-white screen is a technique which involves the rapid identification of the recombinant bacteria in a vector-based molecular cloning experiment. In this method, a DNA ligated vector is inserted in a host cell which is viable for transformation and grown in presence of X-gal.
The cells that are transformed with the vectors having the recombinant DNA produce the white colonies. Whereas, the cells transformed with empty vector i.e. the non-recombinant plasmids, produce the blue colonies.
The name comes from a latin word meaning to glue or bind together. DNA ligase catalyses the joining of DNA fragments (usually those produced by restriction enzymes). Thus different genes can be put into vectors and moved into other hosts.
<span>They can rais the number of crops produced in an amount of time, they can also reduce the need for harmful pesticides. However, they may cause more allergies in humans, producing a health risk.</span>
