The majority of cancers are caused by
A) a sedentary lifestyle.
B) negative thoughts.
C) genetic factors.
D) contact with a person who has cancer.
E) chemical exposure or other environmental factors.
E
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The cell receives its shape from a network of microtubules and filaments known as the ________
A) Endoskeleton B) Microskeleton C) Exoskeleton D) Cytoskeleton
This figure shows the thoracic cage which number(s) indicate a costal notch?
A. 2, 3 B. 3 C. 2, 3, 6 D. 2, 6 E. 3, 6
The autonomic division of the nervous system directs
A) processes that maintain homeostasis. B) behavior. C) emotions. D) voluntary activity. E) conscious control of skeletal muscles.
Natural killer cells derive from T-lymphoblasts and monocytes derive from the granulocyte line.
Answer the following statement true (T) or false (F)