The current rate of extinction may be as much as ________ times greater than the natural rate of extinction

A) 10
B) 100
C) 1,000
D) 10,000


Answer: B

Biology & Microbiology

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Infection of the urinary bladder is called ________.

A. PID B. vaginitis C. urethritis D. pyelonephritis E. cystitis

Biology & Microbiology

Yeast is used to produce beer and wine but can also make bread rise. All of these processes involve the production of alcohol. Explain why you can eat bread and not get drunk

A) The heat of cooking bakes out the alcohol. B) The amount of alcohol produced is too small to be noticeable. C) The bread-making process produces ethyl alcohol, not isopropyl alcohol. D) The bread-making process produces isopropyl alcohol, not ethyl alcohol.

Biology & Microbiology

A drug, colchicine, can be added to cells in culture and it stops the polymerization of microtubules. What effect would this have on mitosis?

A. It would slow or block mitosis by preventing DNA replication. B. It would slow or block mitosis by interfering with the spindle apparatus function. C. It would speed up mitosis by increasing the elongation rate of the dividing cell. D. It would speed up mitosis by increasing the rate of DNA replication.

Biology & Microbiology

RNA primers are added, what do they provide to DNA polymerase that is essential to its function?

a. a free 5' phosphate b. partially double stranded DNA c. RNA d. a free 3' OH

Biology & Microbiology