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This is Scientific American - 60 second Science. I'm Christopher Antaryata. Got a minute? We humans take medicine when we are sick. As due our primate1 cousins, chimps2, for example, snack on a bitter African shrub3 to combat intestinal4 worms. But the habit extends even to invertebrates5. Take fruit flies, which sip6 alcohol to ward7 off parasitic8 wasps9, or willias, which lie no nest with anti-fungal anti-bacteria tree sap. Now researchers in Finland report that ants there that have encountered pathogenic fungus10 appeared to fight the infection by eating foods high in free radicals11. Those are molecules12 with a talent for causing cell damage, in this case, to the cells of the fungus, as according to a study in the journal Evolution. The researchers collected some 400 wild ants, exposed some to the fungus and left the rest alone. Then they offered up a sort of aggie13 custered, either plane or laced with free radicals in the form of hydrogen peroxide. Uninfected ants didn’t want anything to do with radical-rich food, which makes sense. “Is that clear mean we don’t need pain-killers on a daily basis, or we don’t take anti- …” …
1 primate | |
n.灵长类(目)动物,首席主教;adj.首要的 | |
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2 chimps | |
(非洲)黑猩猩( chimp的名词复数 ) | |
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3 shrub | |
n.灌木,灌木丛 | |
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4 intestinal | |
adj.肠的;肠壁;肠道细菌 | |
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5 invertebrates | |
n.无脊椎动物( invertebrate的名词复数 ) | |
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6 sip | |
v.小口地喝,抿,呷;n.一小口的量 | |
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7 ward | |
n.守卫,监护,病房,行政区,由监护人或法院保护的人(尤指儿童);vt.守护,躲开 | |
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8 parasitic | |
adj.寄生的 | |
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9 wasps | |
黄蜂( wasp的名词复数 ); 胡蜂; 易动怒的人; 刻毒的人 | |
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10 fungus | |
n.真菌,真菌类植物 | |
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11 radicals | |
n.激进分子( radical的名词复数 );根基;基本原理;[数学]根数 | |
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12 molecules | |
分子( molecule的名词复数 ) | |
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13 aggie | |
n.农校,农科大学生 | |
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