Which statement is true concerning the genetic code?
A)DNA is said to specify only the structure of protein.
B)The chemical structure of cells is primarily determined by lipids while the physical nature of cells is determined by proteins.
C)DNA serves as the master blueprint for the synthesis of carbohydrates, lipids and proteins.
D)Protein synthesis plays a small but important part in the metabolic machinery of the cell
A)DNA is said to specify only the structure of protein.
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The inferior point of the heart is called the
A) apex. B) hilum. C) base. D) septum. E) mediastinum.
Compared to arteries, the velocity of flow of the blood through the capillaries is
A) at least twice as fast. B) about the same. C) at least 10 times faster. D) much slower. E) impossible to predict without more information.
Sperm:
A. are stored in the vas deferens and the last part of the epididymis. B. travel from the seminiferous tubules to the epididymis by the beating action of their flagellae. C. travel through the vas deferens, then the ejaculatory duct, then the ureter during ejaculation. D. are expelled from the penis through the ureter. E. are no longer produced in individuals who have undergone a vasectomy.
Central fatigue of a muscle directly results from the accumulation of lactic acid in the muscle
Indicate whether the statement is true or false