During the process of splitting water during photosynthesis, the first cyanobacteria released _____ into the

atmosphere.
a. oxygen gas
b. infrared heat
c. hydrogen gas
d. carbon dioxide


e. photons of light


a

Biology & Microbiology

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Which of the following is produced directly by the stem apical meristem (SAM)?

A. protoderm B. vascular cambium C. cork D. pith E. bark

Biology & Microbiology

An example of the utility of gene expression profiling in a clinical situation is

A) finding that a child has inherited a certain genotype. B) identifying genes with aberrant expression levels in cancers likely to spread. C) determining whether a medical condition is inherited or not. D) replacing a gene bearing a mutation with a wild type version in the affected tissue.

Biology & Microbiology

The almost complete loss of the American chestnut tree to the chestnut blight fungus had ____ ecological impact on

the moderately diverse Appalachian woodlands of which it was formerly a part. a. little b. great c. moderate d. undetectable e. detectable

Biology & Microbiology

Eukaryotic pre-mRNA molecules are modified

A. at the transcription bubble. B. inside the nucleus. C. in the cytoplasm. D. as they pass through the nuclear membrane. E. at the ribosome.

Biology & Microbiology