What are noncoding sequences in eukaryotic DNA that are transcribed to RNA and removed by splicing? A) enhancers B) exons C) introns D) promoters

Which phrase best describes a biogeochemical cycle? A.) The movement of a chemical substance through Earth's bodies of water. B.) The movement of a chemical substance between the solid, liquid, and gaseous states of matter. C.

What portion of Earth included in the biosphere

How does sediment form? A. loose material is compacted by pressure B. weathering breaks down rocks and other materials C. molten rock cools below earths surface D. chemical changes cause sediment to cement together

Name a latitude where each of the following occur: polar easterlies, Westerlies, and Tradewinds

Can energy be harvested by the cells from glucose without oxygen? yes, but much less than with oxygen. no, oxygen is required to harvest any energy from glucose. yes, about as much as with oxygen. yes, but not quite as much as with oxygen.

What conditions are needed for an accurate radiometric date to be obtained from a mineral sample?

What covers the ends of bones in adults? A blood B cartilage C marrow D ligaments

If gene expression control occurs during transcription, when did it occur?

If selfing starts in a previously randomly mating population composed of 0.50 heterozygotes, what is the frequency of heterozygotes after three generations of selfing

The movement of a bird away from a grass fire is caused by A) receptors initiating a stimulus B) impulse forming in a muscle tissue C) muscles responding to a stimulus D) effectors synthesizing neurotransmitters