How are viroids transmitted?
A. Respiratory secretions
B. Sex
C. Blood products
D. Plant seeds
Answer: D
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The membrane-attack complex is a group of proteins that supplements the inflammatory response
a. True b. False Indicate whether the statement is true or false
Which statement is true?
a. Gene mutations never occur independently of each other. b. Gene mutations are very common. c. Ionizing radiation is caused by chromosomal damage. d. Mutations are random. e. The loci of gene mutations can be predicted.
In the expression C6H12O6 ® 2C2H5OH + 2CO2, the products are
A. C6H12O6. B. C6H12O6 + zymase. C. zymase + 2C2H5OH + 2CO2. D. 2C2H5OH + 2CO2.
A species that plays a major role in determining the structure of its ecological community is
A) a predator. B) a keystone species. C) a dominator species. D) the species with the largest size. E) the most abundant species in the community.