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<em><u>Why did Portugal and Spain want to find a water route?</u></em>
European rulers from the countries of Portugal, Spain, France, England, and the Netherlands wanted to increase their power by trading silks and spices found in Asia. To achieve their goal, they needed to find a sea route to Asia !! Spanish and Portuguese explorers traveled in two directions.
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Some cells also feature orderly arrangements of molecules called organelles. Similar to the rooms in a house, these structures are partitioned off from the rest of a cell's interior by their own intracellular membrane. Organelles contain highly technical equipment required for specific jobs within the cell. One example is the mitochondrion — commonly known as the cell's "power plant" — which is the organelle that holds and maintains the machinery involved in energy-producing chemical reactions (Figure 3).
A pie slice diagram shows the proportion of water to typical chemical components in a bacterial cell. Each chemical component is color-coded and is labeled by name and percent.
Figure 2: The composition of a bacterial cell
Most of a cell is water (70%). The remaining 30% contains varying proportions of structural and functional molecules.
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Figure Detail
A diagram of scale shows how different biological features fall along a size gradient. Atoms are represented on the far left side of the scale, while much larger blood vessels are pictured on the far right; molecules, organelles, and cells are arranged in the middle in order of increasing size, between these two extremes.
Figure 3: The relative scale of biological molecules and structures
Cells can vary between 1 micrometer (μm) and hundreds of micrometers in diameter. Within a cell, a DNA double helix is approximately 10 nanometers (nm) wide, whereas the cellular organelle called a nucleus that encloses this DNA can be approximately 1000 times bigger (about 10 μm). See how cells compare along a relative scale axis with other molecules, tissues, and biological structures (blue arrow at bottom). Note that a micrometer (μm) is also known as a micron.
A Union or Northern soldier during the Civil War was often referred to as a "Yankee," although this was sometimes used in a derogative sense by people in the South.
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In the very first brief he argued in a court in Bombay (now Mumbai), he cut a sorry figure. ... was closed to him when he incurred the displeasure of a local British officer.
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