Very many related genes can be recognized by conserved protein domains. To what gene structures do these domains correlate?
What will be an ideal response?
exons
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Which adaptation is unique to insects among all protostomes?
A) the ability to move via jointed limbs B) the ability to move by flying C) the ability to consume terrestrial plants D) the ability to parasitize other organisms E) the ability to metamorphose
A repair enzyme recognizes an incorrect structure in the DNA and directly converts it back to a correct structure. Which of the following DNA repair systems is responsible for the correction?
A. base excision repair B. direct repair C. indirect repair D. nucleotide excision repair E. methyl-directed mismatch repair
What initiates the extrinsic clotting mechanism?
a. activation of thrombin b. release of substances outside of the blood c. aspirin d. conversion fibrinogen to fibrin e. activation of factor X
Which organelle would you expect to find in plant cells but not animal cells?
A. mitochondrion B. ribosome C. chloroplast D. smooth endoplasmic reticulum