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Biology Essays

Cell Transport Study Guide

The cell is surrounded by a plasma membrane responsible for the selective permeability of the cell, which allows only tiny materials into the cell. Inside the cell, it is portioned into organelles with different structures and functions. Cell transport is how the materials enter into and out of the cell. The cell membrane regulates cell ... Read More
Pages: 3       Words: 598

Effect of Seven Oriental Herbs Mixture (Jogyeongbohyeoldan) on the Restoration of Ovarian Aging in Aged Mice

Ovarian aging, a condition that results in decreased ovarian functionality due to a gradual reduction of the follicle in the ovary, determines menopause in women. Previous studies show that various factors may cause ovarian failure: chemotherapy, radiotherapy, idiopathic, genetic, and lifestyle habits such as smoking and consumption of harmful chemicals. According to Şükür et al. ... Read More
Pages: 4       Words: 1021
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Singer and Nicholson Model of Biological Membranes

Introduction For many centuries, the biological composition of cell membrane structure remained one of the biggest scientific paradoxes that attracted considerable attention from biologists. In definition, a membrane refers to the outer cellular boundary of a living cell that appeared over 2.7 billion years, first as a prokaryotic cell, and then as a eukaryotic cell ... Read More
Pages: 4       Words: 978

Molecular Biology and Classification

DNA sequencing has made the comparison and determination of organisms’ relatedness at the molecular level. Before introducing DNA sequencing, the classification scheme relied on the morphological traits of organisms that ineffectively placed organisms at their respective taxon. The discovery of DNA sequencing has made tracing various organisms in different generations possible despite enabling scientists to ... Read More
Pages: 3       Words: 803
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