A. If 0.5 mole of glucose weighs 90 g, what is the molecular mass of glucose?
B. What is the concentration, in grams per liter (g/L), of a 0.25 M solution of glucose?
C. How many molecules are there in 1 mole of glucose?
A. 180 daltons. A mole of a substance has a mass equivalent to its molecular weight expressed in grams.
B. 45 g/L
C. 6 × 1023 molecules
You might also like to view...
Jacob, Monod, and Pardee constructed a mutant strain of E. coli that carried a lacI-gene mutation (encodes the lac repressor). Which is TRUE of this mutant strain?
A. Transcription of the lac operon is repressed. B. Transcription of the lac operon does not change. C. The lac operon is constitutively expressed. D. Nonfunctional proteins are produced. E. The lac operon is constitutively expressed and nonfunctional proteins are produced.
Hydrophobic hormones act by ____
a. triggering a genomic response b. triggering a signal transduction pathway c. activating an effector molecule d. inhibiting feedback loops e. preventing translation
The step of translation in which release factors bind to a stop codon is
A. mitosis. B. initiation. C. transcription. D. elongation. E. termination.
Compare and contrast the different types of protists in freshwater systems. Which could be used to track a lake's environmental conditions?
What will be an ideal response?