Concentration differences cause ionic imbalances that polarize the cell membrane, and active transport processes
Indicate whether the statement is true or false
TRUE
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For which of the following organelles are the structure and function correctly described?
A. Golgi apparatus-particles, composed of protein and RNA, which synthesize proteins B. Endoplasmic reticulum-a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion C. Mitochondrion-nonmembranous structure that synthesizes proteins D. Ribosomes-membranous vesicles containing digestive enzymes
The structure labeled A in the diagram belongs to which group of spinal nerves?
a) cervical nerves b) thoracic nerves c) lumbar nerves d) sacral nerves e) coccygeal nerves
Skeletal muscle cells contain intracellular contractile proteins, including troponin and tropomyosin
Indicate whether the statement is true or false
A 22-year-old man has arrived in the emergency room following a motorcycle accident and needs a blood transfusion. He is wearing a medical bracelet that shows he is blood type B negative. Which of the following blood types could be transfused without complication?
A) O negative and B negative B) B positive C) O positive D) AB negative