What is the function of GTP in translation?
A. GTP supplies phosphates and energy to make ATP from ADP.
B. GTP energizes the formation of the initiation complex, using initiation factors.
C. GTP separates the small and large subunits of the ribosome at the stop codon.
D. GTP hydrolyzes to provide phosphate groups for tRNA binding.
E. GTP hydrolyzes to provide energy for making peptide bonds.
Answer: B. GTP energizes the formation of the initiation complex, using initiation factors.
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How do endophytes differ from endomycorrhizal fungi?
A. Endophytes live within leaves, whereas endomycorrhizal fungi live within roots. B. Endomycorrhizal fungi are beneficial to the plant, whereas endophytes are harmful. C. Endophytes are unicellular, whereas endomycorrhizal fungi are multicellular. D. Endophytes help plants absorb nutrients, whereas endomycorrhizal fungi help plants defend against predators and pathogens. E. Endophytes penetrate into plant cells, whereas endomycorrhizal fungi live within and between plant cell walls.
The parasite T. gondii is acquired via the ingestion of infected oocysts from cat feces. A diagnosis is primarily made through:
a. examination of stool. b. examination of blood films. c. observance of "jerky" motility. d. serologic means.
A TATA box is seen in ____ cells and is the site where ____
a. prokaryotic; RNA polymerase binds b. eukaryotic; DNA ligase cleaves introns c. eukaryotic; RNA polymerase binds
d. both prokaryotic and eukaryotic; transcription factors bind e. prokaryotic; a repressor protein binds
Microbes such as Geobacter metallireducens obtain energy from organic matter under anaerobic conditions by using MnO2 as a/an ________ ________.
Fill in the blank(s) with the appropriate word(s).