Insertion sequences can be identified by which of the following?
A. Presence of an integrase enzyme
B. High level of mutation
C. Presence of inverted repeats at the end of the sequence
D. Presence of a reverse transcriptase enzyme
C
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Smooth muscle differs from skeletal muscle in which of the following ways?
A. It lacks actin. B. Calcium is not involved in the contraction mechanism. C. Skeletal muscle cells are smaller. D. It lacks transverse tubules. E. None of the answers provided are correct.
A more realistic goal than eradicating cancer is to
A) slow cancer spread and convert it to a chronic, manageable condition. B) genetically engineer human beings, making them cancer resistant. C) suppress cell division and increase the longevity of human cells. D) genetically engineer cancer cells, making them benign.
What is population variation?
a. variation between two adjacent populations b. variation that results from two populations mixing and interbreeding c. the distribution of phenotypes among individuals in a population d. a gradient of change from one edge of a population to the other
Select all of the substances that are filetered from the blood by the glomerular capsult
A) Proteins B) water C) sugars D) ions E) Red blood cells