Which of the following biologic agents is highly transmittable from person to person?
A) Smallpox
B) Botulinum
C) Bubonic plague
D) Yellow fever virus
Answer: A) Smallpox
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Protozoan classification used to be based on their means of
A. locomotion. B. growth. C. reproduction. D. obtaining nutrients.
The energy needed to polymerize DNA is supplied by
A) the hydrolysis of the phosphate bonds of ATP by an accessory protein that is part of the DNA polymerase holoenzyme. B) the hydrolysis of the phosphate bonds of ATP or GTP, depending on the form of DNA polymerase. C) the hydrolysis of the phosphate bonds of the deoxynucleoside triphosphates that are being added to the new DNA chain. D) the formation of the covalent bond between the phosphate of the nucleoside and the hydroxyl group. E) the hydrolysis of the RNA primers used in DNA replication.
The nucleus of a differentiated cell contains all of the genetic information necessary to direct the development of an entire organism. This nucleus is therefore said to be ________
Fill in the blank with correct word.
Which of the following is not a symptom of a heart attack?
A. nausea and vomiting B. dizziness C. diarrhea D. shortness of breath E. feeling of pressure in the chest