The ends of chromosomes have areas of repeated DNA called centromeres
Indicate whether the statement is true or false
FALSE
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A muscle contraction always involves a decrease in the length of the muscle fiber
A. true B. false
What radiolabeled substance did Hershey and Chase use to label the protein component of the bacteriophage in their study to determine whether protein or DNA was necessary for phage production?
A) nitrogen B) carbon C) sulfur D) phosphorus E) iodine
In which of the following do the lightdependent
reactions of photosynthesis take place?
a. thylakoid membranes b. stroma c. the outermost membrane d. between the outermost and innermost membranes e. a combination of more than one of these
Pollination is the arrival of pollen on the _________.
A. corolla of another flower B. stigma of a seed plant C. stamen of a neighboring flower D. pistil of a plant a distance away E. female gametophyte