Johann Miescher is credited with
a. proposing DNA as the hereditary material.
b. determining that proteins are the physical basis
of inheritance.
c. defining the laws of inheritance.
d. discovering DNA.
e. determining that proteins are composed of
unlimited combinations of twenty amino acids.
Answer: d
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Match the amino acid with its abbreviation.
A) E B) R C) N D) A E) W F) D G) Y H) T I) K 1) arginine 2) lysine 3) threonine 4) tryptophan 5) tyrosine 6) asparagine 7) aspartate 8) glutamate
The limbic system is involved in control of:
a. breathing b. emotions c. heart rate d. peristalsis e. vision
Which of the following is a Gram-negative bacterium that acts as a predator on other Gram-negative bacteria, and might be used to control populations of Gram-negative human pathogens in locations such as poultry farms?
A. Salmonella enteritidis B. Vibrio choerae C. Bdellovibrio D. E. coli
Which of the following pairs is correctly matched?
a. chloroplast?storage of enzymes b. lysosome?powerhouse of the cell c. centrosome?cell division d. plastids?structural support of the cell e. Golgi complex?production of energy