Waiting
Login processing...

Trial ends in Request Full Access Tell Your Colleague About Jove
什么是细胞?
Cells are the smallest and basic units of life, whether it is a single cell that forms the entire organism, e.g., in a bacterium or trillions of…
细胞的大小
The size of cells varies widely among and within organisms. For instance, the smallest bacteria are 0.1 micrometers (μm) in diameter—about a…
真核细胞区室化
One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that…
原核生物
Prokaryotes are small unicellular organisms that include the domains—Archaea and Bacteria. Bacteria include many common organisms, such as…
细胞质
The cytoplasm consists of organelles and a framework of protein scaffolds called the cytoskeleton suspended in an aqueous solution, the cytosol. The…
细胞核
The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene…
内质网
The Endoplasmic Reticulum (ER) in eukaryotic cells is a substantial network of interconnected membranes with diverse functions, from calcium storage…
核糖体
Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells…
高尔基体
As they leave the Endoplasmic Reticulum (ER), properly folded and assembled proteins are selectively packaged into vesicles. These vesicles are…
微管
There are three types of cytoskeletal structures in eukaryotic cells—microfilaments, intermediate filaments, and microtubules. With a diameter…
线粒体
Mitochondria and peroxisomes are organelles that are the primary sites of oxygen usage in eukaryotic cells. Mitochondria carry out cellular…
缝隙连接
Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores…
细胞外基质
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM).…
组织
Cells with similar structure and function are grouped into tissues. A group of tissues with a specialized function is called an organ. There are four…
植物细胞壁
The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For…
胞间连丝
The organs in a multicellular organism’s body are made up of tissues formed by cells. To work together cohesively, cells must communicate. One…
从构造到晶体 - 迈向β桶外膜蛋白的结构解析
Membrane proteins serve important functions in cells such as nutrient transport, motility, signaling, survival and virulence, yet constitute only ~1%…
在小鼠胚胎干细胞结构功能研究使用重组酶介导的盒式交换
Gene engineering in mouse embryos or embryonic stem cells (mESCs) allows for the study of the function of a given protein. Proteins are the…
从HIV-1阳性者的血浆分离外来体的
Exosomes are small vesicles ranging in size from 30 nm to 100 nm that are released both constitutively and upon stimulation from a variety of cell…

Get cutting-edge science videos from JoVE sent straight to your inbox every month.

Waiting X
Simple Hit Counter