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
51
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
[originaltext]W:Well,ImustadmitmyhusbandandIwould’vefeltmuchhappier
[originaltext]TheaverageAmericanwillmove13timesinhislifetimeandm
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]Manyayoungpersontellsmehewantstobeawriter.Ialway
[originaltext](22)Askayoungchild"Howwasschooltoday?"andyou’relike
双效溴化锂吸收式制冷机与单效制冷机相比,热效率提高了(),蒸汽消耗量降低了(
A.脓肿切开引流 B.肝叶切除 C.脓肿穿刺抽脓 D.内科治疗 E.物理
下列行为中,不符合银行从业人员“保护客户隐私和商业秘密”规定的是()。A.银行
既能祛风解表,又能胜湿、止痛、止痉的药物是()。A.荆芥B.紫苏C.防风D.桂
虽然现在有些哺乳动物间存在社群行为,但生物学界过去普遍认为,哺乳动物的祖先都过着
最新回复
(
0
)