Which organelles contain DNA?
a. lysosomes and ribosomes
b. lysosomes and mitochondria
c. chloroplasts and mitochondria
d. chloroplasts and ribosomes
Ans: c. chloroplasts and mitochondria
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True or False: Although most behaviors are influenced by multiple genes, in Drosophila foraging behavior is influenced by a single gene with two different alleles (for S and for R)
A. true B. false
Which statement best describes why packed red blood cells are usually transfused instead of whole blood?
A) Whole blood contains antibodies that could attack the recipient's antigens on their red blood cells. B) Packed red blood cells are smaller than whole blood cells and therefore enter the bloodstream faster than whole blood. C) Whole blood contains plasma proteins that could cause edema in the patient. D) Packed red blood cells provide the red blood cells the recipient needs without adding plasma that may change their fluid volume too much. E) Whole blood is diluted with plasma so the recipient might not receive the needed number of red blood cells.
After generating a hypothesis, a scientist next:
a. makes a prediction. b. writes a grant proposal. c. does an experiment. d. formulates a theory. e. designs a series of tests.
What types of repeats are associated with insertion sequences (IS DNA), and where are they located?
What will be an ideal response?