True or false? Some protists have no nucleus
Indicate whether the statement is true or false
F
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Organisms that degrade hydrocarbons in crude oil are ubiquitous in the environment and have evolved special strategies, such as surfactant production, that allow them to readily use hydrocarbons as electron donors and carbon sources
Indicate whether the statement is true or false.
Sickle-cell anemia is an example of what type of mutation?
A. silent B. missense C. nonsense D. frameshift E. base pair deletion
What is the main function of the TATA-binding protein?
A. to inhibit DNA replication until S phase B. to inhibit transcription until transcriptional activators bind C. to help initiate DNA replication D. to promote initiation of transcription
The purpose of a mordant in the Gram stain is
a. To make the flagella visible. b. To remove the simple stain. c. To make gram-negative cells visible. d. To make the bacterial cells larger. e. To prevent the crystal violet from leaving the cells.