Restriction endonucleases cut DNA at specific sites, known as recognition sites, to produces DNA fragments useful for cloning. Restriction enzymes or restriction endonucleases are DNA cutting enzymes found in bacteria. Each restriction enzyme recognizes one or a few restriction sites. When it finds its target sequence, it makes a double stranded cut in the DNA molecule.
Flexibility exercises have been prescribed successfully to treat dysmenorrhea (painful menstruation), general neuromuscular tension (stress) and knots (trigger points) in muscles and fascia. What are the benefits of good flexibility? -enhances quality of life -promotes healthy muscles and joints -greater freedom of movement -makes activities of daily living easier -promotes healthy muscles and joints -Improves elasticity of muscles and connective tissue around --joints, enhancing freedom of movement -Makes activities of daily living (turning, lifting, and bending) much easier to perform -Helps prevent low back and other spinal column problems -Improves and maintains good postural alignment -Promotes proper and graceful body movement -Improves personal appearance and self-image -Helps develop and maintain motor skills throughout life
Answer: Option A.
nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla.
Explanation:
countercurrent multiplier is a system that utilize energy that create osmotic gradients and enable reabsorption of water thereby increase concentration of urine. The countercurrent multiplier uses electrolyte pumps there by making the nephron loop increase the concentration of salts in the interstitial fluid of the kidney medulla because it allows the nephron to reabsorb alot of water and and increase the concentration of urine for excretion while at the same time using as little energy as possible.
An example of selective breeding is breeding cattle to produce better meat.
