Answer the following questions true (T) or false (F)
1. There are relatively few antifungal medications available compared to antibacterial drugs.
2. Organs that are commonly affected by drug toxicity include the kidneys and the liver.
3. The majority of prokaryotes are capable of forming endospores.
1. TRUE
2. TRUE
3. FALSE
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Kinases are enzymes that can phosphorylate (transfer phosphate groups onto) macromolecules such as proteins. A particular kinase, Kinase 1 is known to promote cell division. It promotes cell division by phosphorylating Protein X. Phosphorylation of Protein X activates Protein X. Once activated, Protein X stimulates the production of other proteins such as Protein Y and Z that directly promote cell division. In order to function, Kinase 1 requires the presence of Metal A. However, in the presence of Protein A, Kinase 1 is nonfunctional. From the description, what is considered a cofactor of Kinase 1?
A. Protein X B. Protein Y C. Protein Z D. Metal A E. Protein A
The nitrogen-limitation hypothesis states that organisms select food in terms of the nitrogen content of the tissue. Why might this be true?
A. Animal tissue contains about 10 times as much nitrogen as plant tissue. B. Animals are able to "fix" nitrogen much more effectively than plants. C. Herbivores prefer plants with lower nitrogen content. D. High nitrogen levels are a key part of plant chemical defenses. E. Plant tissue contains about 10 times as much nitrogen as animal tissue.
Genetic similarities between humans and laboratory animal models facilitate research on the cause, diagnosis, and treatment of human genetic disease
a. True b. False Indicate whether the statement is true or false
Streptococcus pyogenes
A. is alpha-hemolytic. B. is gamma-hemolytic. C. is beta-hemolytic. D. may form endospores. E. is alpha-hemolytic AND may form endospores.