Which statement incorrectly describes active transport?
A. Transport of materials across the cell membrane with the use of energy
B. Transport of materials from areas of low concentration to areas of high concentration
C. Movement of materials up the concentration gradient
D. Transport of materials from areas of high concentration to areas of low concentration
Answer: D
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Collectively, these muscles support and position the head, vertebral column, and thoracic cage. They also control movements associated with respiration and form part of the floor of the pelvic cavity.
A. Appendicular muscles B. Axial muscles
The _________ are responsible for synthesizing most of a human body cell's ATP
A. lysosomes B. microfilaments C. nucleoli D. ribosomes E. mitochondria
At a PO2 of 70 mm Hg and normal temperature and pH, hemoglobin is ________% saturated with oxygen.
A) over 90 B) 10 C) 75 D) 25 E) 50
This figure shows the scapula. Which number indicates the superior angle?
A. 1 B. 2 C. 4 D. 7 E. 10