The 11 McFarland standards represent a specific degree of turbidity. What is the degree of turbidity used for?
A) To visually standardize the growth of bacterial cultures.
B) To visually standardize the pH of bacterial cultures.
C) To visually standardize the level of antimicrobic resistance.
D) To visually standardize the growth factors available to the bacterial cultures.
A) To visually standardize the growth of bacterial cultures.
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Diffusion of molecules through channels and facilitated transport are types of ________ transport
Fill in the blank(s) with correct word
Mendeleev found that when he arranged the known elements according to their atomic mass, the entries in the table exhibited a pattern of chemical properties that repeated itself in groups of eight elements. This led to the generalization now known as:
A. an atomic model. B. the periodic table. C. valance electrons. D. the octet rule.
To understand the role of zinc in plant growth and development, you are growing a tomato plant using hydroponics. Which plant organs do you expect to have developmental defects if you provide the plant with a solution devoid of zinc?
A) below ground development B) stem development only C) all organs will be affected D) leaf development only E) above ground development
In the tryptophan operon, low level of tryptophan nutrient results in the following events EXCEPT
A) that the synthesis of leader peptide is stalled. B) continuous transcription of the trp operon. C) that tryptophan repressor cannot bind to trp operator in the trp operon. D) synthesis of polycistronic mRNA of tryptophan structural genes. E) that regions 3 and 4 form a stem-loop.