Answer:
Cross-bridges would form in the absence of an action potential from a motor neuron.
Explanation:
The injected calcium ions would bind to troponin. Troponin would make tropomyosin move away from the myosin-binding sites on actin. The presence of free binding sites on the actin would be followed by the contraction cycle. This would include hydrolysis of ATP to energize myosin heads and binding of these heads to actin to form cross-bridges. Therefore, cross-bridge formation would occur without any action potential if calcium ions are injected directly into the muscle.
Current treatment for Wilms' tumor includes Surgery and radiation.
Wilms tumor is a type of cancer that starts in the kidneys. It is the most common type of cancer in children. It is a rare kidney cancer that primarily affects children. Surgery treatment to remove the tumor is the first treatment if it can be done, followed by radiation therapy. The entire abdomen will be treated if there is still some cancer left after surgery. If the cancer has spread to the lungs, low doses of radiation might also be given to that area.
Riparian zones are attractive to livestock because they contain lush vegetation that livestock like to eat.
Riparian zones are the transitional areas between land and a water body such as rivers, streams, or lakes. Riparian zones are attractive to livestock because they contain lush vegetation; a vegetation that has a greater variety of plant species. Shrubs such as willows, herbaceous and aquatic plants, such as rushes and sedges, and trees can be found in riparian zones.
A malignant tumor has begun to allow cancers cells to enter the brain. Maligant tumors divide into primary tumors which start with the brain and secondary tumors which scatter from somewhere else which is called brain metastasis tumors.
There are symptoms which produce by brain tumors. For example, a problem with vision, vomiting, mental changes and headache. The important problem may include having difficulty in walking. The cause of brain tumor is unknown but the most risk factor is that it may be inherited neurofibromatosis, ionizing radiation and vinyl chloride.
Medulloblastoma is the type of malignant tumor in children. The medical examination which is computed by tomography can diagnose it. Treatment of a malignant tumor is chemotherapy, radiation therapy and surgery.
Answer:
D
Explanation:
I would say D because chemicals from farms run off into local waters where you catch fish from. These chemicals were not made for human consumption, some were made to keep animals off farms.
