Genomic analysis of Prochlorococcus has revealed
A) the presence of bacteriorhodopsin.
B) variations in ribosomal genes within the same phylotype.
C) complete congruence of genes and genome structure within the same phylotype.
D) variation in functional genes within phylotypes, but high levels of gene conservation between cultured representatives and environmental populations.
Answer: D
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The autoclave sterilizes material by:
a. applying dry heat at high temperatures and pressure. b. infusing gaseous chemicals that kill or-ganisms. c. applying moist heat at high temperatures and increased pressure. d. cleaving protein bonds found in most bio-logical agent cell walls.
This part of the brain coordinates motor
activity for moving limbs and maintaining posture. This part of the brain is the
a. cerebrum. b. cerebellum. c. medulla oblongata. d. pons. e. hypothalamus
Use of genetically modified crop plants may be crucial to feeding the world's growing population. Discuss this statement with regard to BT toxin production in modified crop plants
What will be an ideal response?
Maintaining the ozone layer is crucial for life because it
a. absorbs visible light. b. absorbs high-energy UV radiation. c. blocks high-energy IR radiation. d. blocks low-energy IR radiation. e. absorbs low-energy UV radiation.