Which chloroplast structure increases the amount of surface area that is available for photosynthesis?
A) stroma
B) chlorophyll
C) envelope
D) thylakoid
D
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The unit of transcription at the molecular level is the gene
Indicate whether the statement is true or false
If the Earth spun in the opposite direction what would change?
A) The equator would become as cold as the poles. B) Air masses in the Northern Hemisphere would rotate counterclockwise. C) Equatorial air would fall rather than rise. D) Winter would occur in July in the Northern Hemisphere.
What is the function of an enzyme?
What will be an ideal response?
A student uses restriction enzymes to cut a DNA molecule into fragments. The digested DNA is loaded into the wells of an agarose gel and the gel is subjected to an electric current. Upon completion of the run, the gel is stained. The procedures described can be used to do all of the following EXCEPT
(A) isolate and purify certain DNA fragments (B) synthesize novel DNA molecules (C) study the activity of restriction enzymes (D) calculate the size of DNA fragments (E) identify the source of DNA material