The answer is B
A worker bee defends the hive while the queen be lay eggs like a good soldier would do
The State of California uses a mechanism known as "NOTS" to rehabilitate chronic violators of driving laws. The Negligent Operator Treatment System (NOTS) is based on negligent operator points and consists of a computer-generated series of warning letters and progressive sanctions against the driving privilege.
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Answer:
Unlike typical mammalian red blood cells, those from amphibians, such as frogs, contain a DNA-bearing nucleus that is visible in the center of the cell. The circulatory system of amphibians is rather unusual, their hearts having three chambers, two atria, and a single ventricle.
NegativePositive
Positive
The design of the amphibian circulatory system is curious because blood accumulates oxygen in the lungs and is then returned to the heart before being pumped into the rest of the circulatory system. Therefore, a mixing between oxygenated and deoxygenated blood occurs as blood returning to the heart from the lungs is mixed with incoming blood from the body. Frogs handle this situation by having a very slow metabolism and by absorbing some oxygen through their skin. In addition, the ventricle does have some directional control over the distribution of the blood.
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The presence of a nucleus in amphibian red blood cells allows researchers easy access to large quantities of amphibian DNA. Frog blood has both a solid and a liquid portion. The liquid plasma carries solid elements such as red and white blood cells. Blood can be collected from frogs and the red blood cells isolated by centrifugation. After removal of the residual plasma, purified cells can be treated with specific enzymes and detergents to digest the cellular envelope and release DNA from its protein complex. The DNA is then useful for scientific studies and experiments.
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Explanation:
Answer:
Juvenile rheumatoid arthritis
Explanation:
Arthritis is a term used to refer a group of diseases that affects the joints such as knees, wrists and fingers.
Juvenile rheumatoid Arthritis is an autoimmune disorder that affects children which means the body attacks itself by mistakenly identifying its own cells as foreign .
The cause of this response is not yet known.
Some of the symptoms of the disease include stiffness, pain, joint swelling, skin rush, fever, slowed growth and fatigue.
It has no cure but in some cases children seem to outgrow the disease.
