Explain how the mycorrhizae and plant root interaction is considered symbiotic.
What will be an ideal response?
The mycorrhizae will invade the cortex of the plant root and grow between the cell walls (ectomycorrhizae) or penetrate the cell walls (endomycorrhizae). The presence of the fungi will give the plant a greater surface area for absorption of minerals. The fungus will benefit by receiving carbohydrates from the plants.
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To begin transcription, RNA polymerase must bind to a segment of DNA called the ____.
A. initiation site B. primer C. inducer D. promoter E. transcription bubble
Describe how exon shuffling could lead to the formation of novel proteins
What will be an ideal response?
The intensity of competition between two species increases as
a) the size of their shared environment increases b) their body size increases c) the similarity of their requirements and lifestyles increases d) one species approaches the point of extinction e) their reproductive success is reduced
The monomer unit of a protein is
A. fatty acids. B. amino acids. C. polysaccharides. D. nucleic acids. E. monosaccharides.