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Bài viết của Trần Bảo Ngọc

Chromosomal Theory and Genetic Linkage

Long before chromosomes were visualized under a microscope, the father of modern genetics, Gregor Mendel, began studying heredity in 1843. With the improvement of microscopic techniques during the late 1800s, cell biologists could stain and visualize ...

Tác giả: Trần Bảo Ngọc viết 15:27 ngày 25/05/2018 chỉnh sửa

Calcium Homeostasis: Interactions of the Skeletal System and Other Organ Systems

Calcium is not only the most abundant mineral in bone, it is also the most abundant mineral in the human body. Calcium ions are needed not only for bone mineralization but for tooth health, regulation of the heart rate and strength of contraction, blood ...

Tác giả: Trần Bảo Ngọc viết 15:27 ngày 25/05/2018 chỉnh sửa

Addition of Velocities

If a person rows a boat across a rapidly flowing river and tries to head directly for the other shore, the boat instead moves diagonally relative to the shore, as in [link]. The boat does not move in the direction in which it is pointed. The ...

Tác giả: Trần Bảo Ngọc viết 15:26 ngày 25/05/2018 chỉnh sửa

Polarization

Polaroid sunglasses are familiar to most of us. They have a special ability to cut the glare of light reflected from water or glass (see [link]). Polaroids have this ability because of a wave characteristic of light called polarization. What is ...

Tác giả: Trần Bảo Ngọc viết 15:26 ngày 25/05/2018 chỉnh sửa

Work in the United States

Many people attend job fairs looking for their first job or for a better one. (Photo courtesy of Daniel Ramirez/flickr) The American Dream has always been based on opportunity. There is a great ...

Tác giả: Trần Bảo Ngọc viết 15:26 ngày 25/05/2018 chỉnh sửa

Transport of Gases

The other major activity in the lungs is the process of respiration, the process of gas exchange. The function of respiration is to provide oxygen for use by body cells during cellular respiration and to eliminate carbon dioxide, a waste product of cellular ...

Tác giả: Trần Bảo Ngọc viết 15:25 ngày 25/05/2018 chỉnh sửa

World Religions

The symbols of 14 religions are depicted here. In no particular order, they include Judaism, Wicca, Taoism, Christianity, Confucianism, Baha’i, Druidism, Islam, Hinduism, Zoroastrianism, Shinto, Jainism, Sikhism, and Buddhism. ...

Tác giả: Trần Bảo Ngọc viết 15:25 ngày 25/05/2018 chỉnh sửa

What Is Sociology?

Sociologists learn about society as a whole while studying one-to-one and group interactions. (Photo courtesy of Robert S. Donovan/flickr) A dictionary defines sociology as the systematic study of society and social interaction. The word ...

Tác giả: Trần Bảo Ngọc viết 15:25 ngày 25/05/2018 chỉnh sửa

Phylum Cnidaria

Phylum Cnidaria includes animals that show radial or biradial symmetry and are diploblastic, that is, they develop from two embryonic layers. Nearly all (about 99 percent) cnidarians are marine species. Cnidarians contain specialized cells known as ...

Tác giả: Trần Bảo Ngọc viết 15:25 ngày 25/05/2018 chỉnh sửa

The Sensory and Motor Exams

Connections between the body and the CNS occur through the spinal cord. The cranial nerves connect the head and neck directly to the brain, but the spinal cord receives sensory input and sends motor commands out to the body through the spinal nerves. Whereas ...

Tác giả: Trần Bảo Ngọc viết 15:25 ngày 25/05/2018 chỉnh sửa

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Chromosomal Theory and Genetic Linkage

Calcium Homeostasis: Interactions of the Skeletal System and Other Organ Systems

Addition of Velocities

Polarization

Work in the United States

Transport of Gases

World Religions

What Is Sociology?

Phylum Cnidaria

The Sensory and Motor Exams

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