According to the __________, the universe formed about 13.7 billion years ago in an instant, with all matter and energy exploding outward.
Fill in the blank(s) with the appropriate word(s).
big bang theory
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Two F+ E. coli strains are co-cultured in the same flask. One is Strr Thr+ and the other is Genr Thr?. The culture is then plated on minimal media that is supplemented with gentamycin only (not threonine) and a few colonies grow. What sort of genetic exchange is most likely occurring?
A) transformation B) conjugation C) transduction D) electroporation
A holoenzyme is a combination of a protein and one or more substances called ________.
A. substrates B. apoenzymes C. cofactors D. ribozymes E. catalysts
The tissue type that covers internal and external surfaces of organs, aids in protection, nutrition absorption, and gas diffusion is the _______ tissue.
A. connective B. nervous C. muscle D. epithelial E. All of the answer choices are correct.
Which metabolic process is anaerobic?
a. Krebs Cycle b. Electron Transport Chain c. Oxidative Phosphorylation d. Glycolysis