The helix structure on the right of the above
figure represents
a. DNA.
b. RNA.
c. lipid.
d. protein.
e. phospholipid
B
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How many covalent bonds do noble gases form in nature?
a. Noble gases may form as many as three covalent bonds. b. Noble gases may form up to eight covalent bonds. c. Noble gases do not form covalent bonds with other atoms. d. Noble gases only form single bonds with other noble gases.
Transgenic animals are valuable in the study of human diseases for which of the following reasons?
A. They can manifest the same symptoms as human diseases. B. They can be used to study the development and progress of human diseases. C. They can be used to test drugs on. D. They can be cloned and thus have identical genomes. E. All of these are reasons why transgenic animals are valuable in the study of human diseases.
Vascular spasm, formation of a platelet plug, and coagulation are the three stages of ________
Fill in the blank(s) with correct word
When microbes in close nutritional relationship and one benefits but the other is not harmed, it is called
A) Symbiosis B) Commensalism C) Synergism D) Mutualism E) Satellitism