Which method of DNA repair uses light to repair thymine dimers that have been causes by UV light exposure
What will be an ideal response?
photoactivation
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An ant that consumes the "honeydew" from an aphid's anus benefits by obtaining a source of carbon
a. True b. False
Which statement about the phosphorus cycle is true?
a. The natural weathering of rocks sends phosphate into lakes and oceans. b. Phosphate from geothermal vents causes dead zones in lakes. c. Phosphate enters the oceans primarily through precipitation. d. The average phosphate ion resides in the ocean for less than 500 years.
More than 50% of the entire human genome codes for functional proteins.
Answer the following statement true (T) or false (F)
At which point or stage would the majority of cells in the embryo no longer be stem cells?
A) the pre-embryo stage B) in the blastocyst C) after the organs start to develop D) A large number of stem cells would exist in all these stages.