【名师带你背单词】PTE高频内容精选《Twist in the tail of eukaryotic origins》part2,曼拓教育微信公众号文章

Dina老师

今天我们一起来看看这篇在PTE中听力考试中高频出现的生物类文章。

PTE练习题：Twist in the tail of eukaryotic origins Part2/3

关键词： eukaryotic, mitochondria

Dina老师

下面带着对这些单词和短语的理解，尝试读一读下面的原文，看看是不是容易理解的多了呢？

Nathan Lo at the University of Sydney in Australia and Claudio Bandi at the University of Milan, Italy, and colleagues think it is time to view this serendipitous encounter in a different light. They say that a few bacteria within the Rickettsiales – the closest genetic match to mitochondria – carry genes for a flagellum, a whip-like tail that some bacteria use to propel themselves.

That suggests that the bacteria might once have been mobile, like many parasitic bacteria. “Our results indicate that the mitochondrial ancestor may have acted as a parasite rather than prey,” says Lo.

The team focused on Midichloriamitochondrii, a relatively little-known member of the Rickettsiales. Although the Rickettsiales do not boast a flagellum, the Midichloria genome contained 26 genes that help to build one in other bacteria. “We thought, that’s strange,” says Lo. “Where the hell did these genes come from?”

PTE四项精品一阶班
课程简介	曼拓PTE权威名师团队打造，针对PTE零基础学员量身定制。一阶班将对PTE四项考试各题型进行讲解、围绕评分标准和要求安排课程和内容，同时分享PTE四项基本答题技巧以及机考技巧。揭开PTE考试神秘外壳，帮助大家在最短时间内掌握PTE考试规律。
开班时间	特加白班（11月14日-25日）：每周一、二、五 13：30-15:30
课程周期	12小时，两周结课
价格	$480