A boy falls while riding his bike. A scrape on his hand almost immediately begins to bleed and becomes red, warm, and swollen. What response is occurring?
A) inflammatory response
B) lytic response
C) adaptive immune response
D) autoimmune response
A
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Viruses that kill bacterial host cells during each cycle of infection are called ____
a. virulent bacteriophages b. enveloped viruses c. temperate bacteriophages d. phages e. nonvirulent bacteriophages
If humans reproduced by parthenogenesis,
a. males would need to produce more sperm. b. the number of males in the population would most likely increase. c. the number of females in the population would most likely increase. d. the children would be identical to their parents. e. there would be no need for mitosis.
The half-life of 14C is 5,730 years. If, after 11,460 years, an organism dies, what percent of the initial 14C will still be present in the organism's bones?
A. 75% B. 0% C. 25% D. 100% E. 50%
The subatomic particle(s) with no charge is(are)
a. the neutron. b. the proton. c. the electron. d. both the neutron and proton. e. both the proton and electron.