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叶子隐藏至深的秘密

Travel Deep Inside a Leaf - Annotated Version | California Academy of Sciences

《生命:叶子隐藏至深的秘密》
We are approaching a redwood tree
我们走近一颗红杉树
to animate a scientifically accurate leaf.
用动画的方式 科学精准地为您呈现一片树叶
Artists studied the texture of a redwood leaf specimen
艺术家们在玻片下用高分辨率
on a glass slide at high resolution.
研究了红杉树叶子标本的组织
They even counted the stomata,
他们甚至清点了叶面上的气孔
and used that exact count for this film!
并将这一确切的数字用在了本视频中!
These leaves would be measured on a centimeter scale.
这些叶子现在是厘米的量级
Throughout the animation,
整个动画过程中
we will gradually zoom in to smaller scales.
我们将逐渐放大进入到更小的量级
As we approach a single stoma,
我们慢慢靠近一个气孔
we are now on a millimeter scale.
现在已经是毫米量级了
As we enter the interior of the leaf,
进入叶子的内部
we see many individual palisade cells.
可以看到单个的栅栏细胞
These cells are where photosynthesis takes place.
这些细胞是产生光合作用的地方
They are translucent to allow sunlight to enter.
它们是透明的 阳光可以照进来
As we approach a single palisade cell,
现在我们靠近一个栅栏细胞
we’ll zoom down to the micrometer scale.
画面将降至微米量级
The shapes inside the cell are organelles.
细胞内的那些形状是细胞器
The bright globules at the bottom are the Golgi apparatus.
底部明亮的液滴是高尔基氏体
The yellow spotted tubes are endoplasmic reticulum studded with ribosomes.
有黄色斑点的管状物是布满核糖体的内质网
That large, blue membrane surrounds the nucleus.
那大片蓝色的核膜包裹得是细胞核
The purple blobs are mitochondria.
紫色的团状物是线粒体
The faint, yellow, spider-web structure of the cytoskeleton
细胞骨架暗黄色蛛网状结构
provides structure and support to the cell.
为细胞提供框架和支撑
You are about to enter a chloroplast.
你马上就要进入叶绿体了
Inside you see flat, pancake-like membranous structures
在里面 你会看到扁平的饼样膜状结构
called thylakoids.
叫做类囊体
This is where the light-dependent reactions of photosynthesis
在这里产生依赖光的反应 也就是光合作用
take place to produce ATP,
产生三磷酸腺苷
the cell’s energy carrier molecule.
它是细胞能量的载体分子
The time scale has changed.
时间比例已经被改变了
The molecules are shown moving 1 million times slower than in real life!
这里呈现的分子移动速度比实际慢一百万倍!
As we near an individual thylakoid,
我们正在慢慢靠近一个类囊体
the animation scale continues to shrink down to the molecular level,
动画量级继续缩小至分子水平
where things are measured in nanometers.
这种尺度下的物体是纳米级的
The green and blue bush-like structures are photosystems.
蓝绿相间的丛状结构是光合系统
Clusters of proteins that absorb light energy from the sun
这些蛋白质丛吸收太阳光的能量
and help convert it into the chemical energy
并协助它转化成化学能
that’s stored in the bonds of
这些化学能存储在
the energy carrier molecule called ATP.
能量载体ATP的分子键中
The yellow-green, rotating structure
这个黄绿色螺旋结构
is an enzyme called ATP synthase.
是一种叫做ATP合酶的酶
It pumps protons
它将质子
from one side of the thylakoid membrane to the other,
从类囊体膜的一边泵到另一边
assembling ATP molecules in the process.
在这个过程中组装出了ATP分子
The pulses of light in the thylakoid membrane
类囊体膜中的光脉冲
in which the photosystems are embedded
——光合系统就位于类囊体膜中——
represent energized electrons
表示被激活的电子
being passed from one photosystem to another,
从一个光和系统被传送到另一个光和系统
passing along the energy
以此来传递能量
which will be stored in the bonds of ATP,
这些能量将被存储在ATP中
the classic “bucket brigade”.
就像经典的“长蛇阵”一样
The small “wigglies” are ATP molecules.
那些小小的“扭动的曲线”是ATP分子
Living things store energy in the bonds of the ATP molecules
生物将能量存储在ATP的分子键中
and then use that energy
再用这些能量
to conduct all the processes of life.
来实现所有生命过程
What’s intentionally missing or altered?
有什么被故意漏掉或篡改了?
Find out by visiting
快来这个网站一探究竟吧
https://www.calacademy.org/educators/travel-deep-inside-a-leaf
https://www.calacademy.org/educators/travel-deep-inside-a-leaf

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视频概述

用动画的方式呈现纳米量级下的一片叶子,隐藏在叶子深处的秘密尽收眼底,令人叹为观止。

听录译者

收集自网络

翻译译者

*木兮*

审核员

审核员BZ

视频来源

https://www.youtube.com/watch?v=pwymX2LxnQs

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