In the pathway leading from threonine to isoleucine, threonine dehydratase is ____ by the presence of threonine
Fill in the blank with the appropriate word.
Answer Key: activated
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Which trait is a characteristic of most eudicots?
a. four or five floral parts, or multiples of four or five b. three furrows with pores on pollen grain c. vascular bundles organized as a ring in ground tissue d. branching fibrous root system e. two seed leaves of embryo inside the seed
Which of the following countries has the most
extensive family-planning program? a. United States b. Brazil c. China d. Japan e. Pakistan
A patient developed a blood infection after a dental procedure which resulted in bleeding gums. The patient has
A. a subclinical infection. B. an exogenous infection C. a healthcare-associated infection (HAI). D. a superinfection. E. a zoonotic infection.
The antibiotic streptomycin inhibits protein synthesis in bacteria. If this antibiotic is added to a culture of animal cells, protein synthesis in the cytosol continues normally
However, over time, the population of mitochondria in the cell becomes depleted. Specifically, it is observed that the protein-synthesis machinery inside the mitochondria is inhibited. A. Explain this observation based on what you know about the origins of the modern eukaryote. B. What do you expect to observe if, in a new experiment, animal cells are treated with diphtheria toxin, a compound that is known to block cytosolic protein synthesis but does not have any impact on bacterial growth?