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Bài viết của Lê Thị Khánh Huyền

DNA Structure and Sequencing

The building blocks of DNA are nucleotides. The important components of the nucleotide are a nitrogenous base, deoxyribose (5-carbon sugar), and a phosphate group ([link]). The nucleotide is named depending on the nitrogenous base. The nitrogenous base can be a ...

Tác giả: Lê Thị Khánh Huyền viết 14:59 ngày 25/05/2018 chỉnh sửa

Simultaneity And Time Dilation

Elapsed time for a foot race is the same for all observers, but at relativistic speeds, elapsed time depends on the relative motion of the observer and the event that is observed. (credit: Jason Edward Scott Bain, ...

Tác giả: Lê Thị Khánh Huyền viết 14:59 ngày 25/05/2018 chỉnh sửa

Microscopic Anatomy of the Kidney

The renal structures that conduct the essential work of the kidney cannot be seen by the naked eye. Only a light or electron microscope can reveal these structures. Even then, serial sections and computer reconstruction are necessary to give us a comprehensive ...

Tác giả: Lê Thị Khánh Huyền viết 14:59 ngày 25/05/2018 chỉnh sửa

Angular Momentum and Its Conservation

Why does Earth keep on spinning? What started it spinning to begin with? And how does an ice skater manage to spin faster and faster simply by pulling her arms in? Why does she not have to exert a torque to spin faster? Questions like these have answers ...

Tác giả: Lê Thị Khánh Huyền viết 14:59 ngày 25/05/2018 chỉnh sửa

The Cranial Nerve Exam

The twelve cranial nerves are typically covered in introductory anatomy courses, and memorizing their names is facilitated by numerous mnemonics developed by students over the years of this practice. But knowing the names of the nerves in order often leaves ...

Tác giả: Lê Thị Khánh Huyền viết 14:59 ngày 25/05/2018 chỉnh sửa

The Endomembrane System and Proteins

The endomembrane system (endo = “within”) is a group of membranes and organelles ([link]) in eukaryotic cells that works together to modify, package, and transport lipids and proteins. It includes the nuclear envelope, lysosomes, and vesicles, which ...

Tác giả: Lê Thị Khánh Huyền viết 14:59 ngày 25/05/2018 chỉnh sửa

Adaptive Immune Response

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 pathogens and has memory. Adaptive immunity is an immunity that occurs after ...

Tác giả: Lê Thị Khánh Huyền viết 14:58 ngày 25/05/2018 chỉnh sửa

Community Ecology

In general, populations of one species never live in isolation from populations of other species. The interacting populations occupying a given habitat form an ecological community. The number of species occupying the same habitat and their relative abundance ...

Tác giả: Lê Thị Khánh Huyền viết 14:58 ngày 25/05/2018 chỉnh sửa

The Importance of Biodiversity to Human Life

It may not be clear why biologists are concerned about biodiversity loss. When biodiversity loss is thought of as the extinction of the passenger pigeon, the dodo bird, and even the woolly mammoth, the loss may appear to be an emotional one. But is the loss ...

Tác giả: Lê Thị Khánh Huyền viết 14:58 ngày 25/05/2018 chỉnh sửa

Overview of Metabolic Reactions

Metabolic processes are constantly taking place in the body. Metabolism is the sum of all of the chemical reactions that are involved in catabolism and anabolism. The reactions governing the breakdown of food to obtain energy are called catabolic reactions. ...

Tác giả: Lê Thị Khánh Huyền viết 14:58 ngày 25/05/2018 chỉnh sửa

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DNA Structure and Sequencing

Simultaneity And Time Dilation

Microscopic Anatomy of the Kidney

Angular Momentum and Its Conservation

The Cranial Nerve Exam

The Endomembrane System and Proteins

Adaptive Immune Response

Community Ecology

The Importance of Biodiversity to Human Life

Overview of Metabolic Reactions

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