Fertilization ________
A) is the process of providing nutrients to the embryo
B) is the process of fusion of egg and sperm
C) is the final step to occur before implantation into the uterus
D) is the division of the zygote into a mass of cells
Answer: B
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The outermost covering of the spinal cord is the
A. pia mater. B. arachnoid. C. endosteal layer of the dura mater. D. meningeal layer of the dura mater.
During the absorptive state of metabolism, amino acids
A. are used for protein synthesis in most body cells. B. may be converted to ketones in the liver. C. are used for glycogen synthesis in the liver. D. are burned as fuel in muscles, creating urea as a waste product. E. are mobilized from muscle and other tissues faster than they are taken up by those tissues.
The phase in the cardiac cycle when the mitral valve is closed and the aortic valve is open is the
A) atrial systole. B) early diastolic filling phase. C) late diastolic filling phase. D) systolic ejection phase. E) dicrotic phase.
During skeletal muscle contraction, more force is created when more motor units are activated
Indicate whether this statement is true or false.