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Bài viết của Lê Thị Khánh Huyền

Homeostatic Regulation of the Vascular System

In order to maintain homeostasis in the cardiovascular system and provide adequate blood to the tissues, blood flow must be redirected continually to the tissues as they become more active. In a very real sense, the cardiovascular system engages in resource ...

Tác giả: Lê Thị Khánh Huyền viết 15:17 ngày 25/05/2018 chỉnh sửa

Potential, Kinetic, Free, and Activation Energy

Energy is defined as the ability to do work. As you’ve learned, energy exists in different forms. For example, electrical energy, light energy, and heat energy are all different types of energy. While these are all familiar types of energy that one can ...

Tác giả: Lê Thị Khánh Huyền viết 15:17 ngày 25/05/2018 chỉnh sửa

Prokaryotic Cells

Cells fall into one of two broad categories: prokaryotic and eukaryotic. Only the predominantly single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes (pro- = “before”; -kary- = “nucleus”). Cells of ...

Tác giả: Lê Thị Khánh Huyền viết 15:16 ngày 25/05/2018 chỉnh sửa

Adaptive Immunity

The adaptive, or acquired, immune response takes days or even weeks to become established—much longer than the innate response; however, adaptive immunity is more specific to an invading pathogen. Adaptive immunity is an immunity that occurs after exposure to ...

Tác giả: Lê Thị Khánh Huyền viết 15:16 ngày 25/05/2018 chỉnh sửa

Photon Energies and the Electromagnetic Spectrum

A photon is a quantum of EM radiation. Its energy is given by E=hf and is related to the frequency f and wavelength λ size 12{λ} {} of the radiation by E=hf=hcλ(energy of a photon), size 12{E = ital "hf"= { { ital "hc"} ...

Tác giả: Lê Thị Khánh Huyền viết 15:15 ngày 25/05/2018 chỉnh sửa

The Cytoplasm and Cellular Organelles

Now that you have learned that the cell membrane surrounds all cells, you can dive inside of a prototypical human cell to learn about its internal components and their functions. All living cells in multicellular organisms contain an internal cytoplasmic ...

Tác giả: Lê Thị Khánh Huyền viết 15:15 ngày 25/05/2018 chỉnh sửa

Classifications of Fungi

The kingdom Fungi contains five major phyla that were established according to their mode of sexual reproduction or using molecular data. Polyphyletic, unrelated fungi that reproduce without a sexual cycle, are placed for convenience in a sixth group called a ...

Tác giả: Lê Thị Khánh Huyền viết 15:15 ngày 25/05/2018 chỉnh sửa

Regulation of Cellular Respiration

Cellular respiration must be regulated in order to provide balanced amounts of energy in the form of ATP. The cell also must generate a number of intermediate compounds that are used in the anabolism and catabolism of macromolecules. Without controls, ...

Tác giả: Lê Thị Khánh Huyền viết 15:15 ngày 25/05/2018 chỉnh sửa

Circulatory and Respiratory Systems

Animals are complex multicellular organisms that require a mechanism for transporting nutrients throughout their bodies and removing wastes. The human circulatory system has a complex network of blood vessels that reach all parts of the body. This extensive ...

Tác giả: Lê Thị Khánh Huyền viết 15:14 ngày 25/05/2018 chỉnh sửa

Convection

is driven by large-scale flow of matter. In the case of Earth, the atmospheric circulation is caused by the flow of hot air from the tropics to the poles, and the flow of cold air from the poles toward the tropics. (Note that Earth’s rotation causes ...

Tác giả: Lê Thị Khánh Huyền viết 15:14 ngày 25/05/2018 chỉnh sửa

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Homeostatic Regulation of the Vascular System

Potential, Kinetic, Free, and Activation Energy

Prokaryotic Cells

Adaptive Immunity

Photon Energies and the Electromagnetic Spectrum

The Cytoplasm and Cellular Organelles

Classifications of Fungi

Regulation of Cellular Respiration

Circulatory and Respiratory Systems

Convection

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