A hollow ball of cells is (the)
A) embryo.
B) gastrula.
C) morula.
D) blastocyst.
E) None of the answers are correct.
D) blastocyst.
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Endurance training results in increased ________.
A. lactate production per unit time B. glycogen depletion during exercise C. muscle mitochondria number D. number of type IIX fibers
Carotene, a pigment that contributes to skin color, is acquired in the body by eating various yellow-orange vegetables.
Answer the following statement true (T) or false (F)
What type of membranes line joint cavities?
A. cutaneous B. mucous C. gobletal D. synovial E. serous
Macrophages are cells that engulf and consume germs or debris. What organelle must be especially plentiful in these cells?
A) centrioles B) lysosomes C) mitochondria D) ribosomes E) nuclei