首页
登录
职称英语
[originaltext]M: So, what is your biology project about?W: It is about microor
[originaltext]M: So, what is your biology project about?W: It is about microor
游客
2024-03-05
47
管理
问题
M: So, what is your biology project about?
W: It is about microorganisms that live by chemosynthesis.
M: Err...what’s chemosynthesis?
W: Well, it’s pretty complicated. You know how most life on Earth depends either directly or indirectly on sunlight?
M: You mean like plants get energy directly from sunlight, and animals eat plants, so they depend indirectly on sunlight?
W: Right. But down on the ocean floor, there is no sunlight. In some places though, there are hydrothermal vents, which are small cracks on the ocean floor. And these vents release heat and minerals from the inside of the Earth into the seawater. And all along the vents there are these unusual microorganisms. They are called archaean. And these archaean use chemical reactions to get their energy from the minerals. The minerals that are released by the vents. So their energy comes from chemical reactions, not sunlight.
M: So chemosynthesis is getting their energy from chemicals?
W: That’s right.
M: That makes archaean very different from other forms of life.
W: And their genetic makeup is very different, too. They are one sort of organisms just like bacteria are, but genetically they are as different from bacteria as we humans are.
M: Wah, that’s a really interesting project.
选项
A、Their genetics.
B、Their size.
C、What they look like.
D、The amount of energy they need.
答案
A
解析
Besides their source of energy, what is a major difference between archaean and bacteria?
转载请注明原文地址:http://tihaiku.com/zcyy/3508190.html
相关试题推荐
[originaltext]TheproblemofthehomelesshasbecomeveryseriousintheUn
[originaltext]TheproblemofthehomelesshasbecomeveryseriousintheUn
[originaltext]TheproblemofthehomelesshasbecomeveryseriousintheUn
[originaltext]GeneralizingabouteducationintheUnitedStatesinvolvesso
[originaltext]TherecordedcivilizationofIndiaisoneofthelongestint
[originaltext]M:Hey,Sally.I’mthinkingaboutgoingtoGermanythissummer,a
[originaltext]M:Hey,Sally.I’mthinkingaboutgoingtoGermanythissummer,a
[originaltext]M:Hey,Sally.I’mthinkingaboutgoingtoGermanythissummer,a
[originaltext]W:Hello,MarySmithhere.CouldIspeaktoMr.Brown,please?M:
【B1】[br]【B11】[originaltext]Televisionnowplayssuchanimportantpartin
随机试题
Mr.Stevensorderedfull-colorbrochures______theblack-and-whiteonesheprevi
Mostofustellonetwoliesaday,accordingtoscientistswhostudythese
A—fluorescentlampJ—microwaveovenB—electricfanK—smokeexh
Asacontemporaryartist,JimDinehasoftenincorporatedotherpeople’spho
图书稿件发排后,编辑还必须做( )等方面的校样处理工作。A.审读校样 B.推
脂性肾病的病理学特点是()。A.嗜银染色显示毛细血管基底膜上形成许多钉状突起
某集团委托甲评估机构对其拥有的一台核磁共振仪进行评估,评估人员经过对此核磁共振仪
脱疽湿热毒盛证的主要表现为A.患趾(指)酸胀疼痛加重,趺阳脉搏动消失 B.
(共用题干)患者男,17岁。上呼吸道感染后3周出现少尿、水肿入院治疗。查体:血压
乳腺囊性增生病的治疗原则
最新回复
(
0
)