Whales are aquatic (lives in the ocean) mammals that require certain adaptations in order to survive. They have a blow whole on top of their heads and a pair of lungs for breathing fresh air. In order to take a fresh breath whales need to emerge out of the water exposing the blow whole on top of their heads completely. As they emerge to the surface‚ they force out the carbon dioxide in a strong exhalation‚ before filling their lungs with fresh water and diving beneath the surface of the water again
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reputation being tarnished in recent times. Sharks have been roaming the ocean for more than 400 million years‚ even predating the Jurassic period. A testament to the perfect adaptation techniques of sharks‚ they have survived many mass extinctions‚ including the extinction that whipped out the dinosaurs. This great adaptation of the sharks has resulted in them becoming an apex predator of the ocean‚ i.e. being at the top of the food chain. Although Great Whites are widely distributed in the global
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Stem cells -are biological cells found in all multi cellularorganisms‚ that can divide (throughmitosis) and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. In mammals‚ there are two broad types of stem cells: embryonic stem cells‚ which are isolated from the inner cell mass of blastocysts‚ and adult stem cells‚ which are found in various tissues. In adult organisms‚ stem cells and progenitor cells act as a repair system for the body‚ replenishing
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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? No 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? The threshold voltage is at 3.0 V. 3. How does this tracing compare to the one that was generated at the threshold voltage? There was a slight increase. 4. What reason can you
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between the adaptation directed by Mark Brozel and the original text wrote by none other than Shakespeare. For the period of Act 1‚ Scene 2‚ Macbeth is hailed as the very heroic and brave “Worthy gentleman!” who “carved out his passage Till he faced the slave;” this suggests two points already‚ the fact that Macbeth is a graceful fighter who elegantly “carved” his way through the battle which also suggests that he is as much a perfectionist in the play as he is a cook in the adaptation. The perfection
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Top 10 Animal Adaptations Living Together Of all the wonderful adaptations in the animal kingdom‚ perhaps the most important is the habit of living together in communal or family groups. Animals can derive a lot of benefit from spending time with other members of the same species. They can help each other find food‚ defend against predators and care for young. Countless species engage in group living‚ either in herds‚ colonies‚ harems‚ complex societies or loose associations. But perhaps the simplest
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CELL INJURY: CAUSES OF CELL INJURY‚ MECHANISMS OF REVERSIBLE AND IRREVERSIBLE CELL INJURY. CELL INJURY. Causes of cell injury range from gross mechanical external causes to mild endogenous causes as genetic lack of enzymes etc. Virtually all forms of tissue injuries start with molecular or structural alterations in cells. Under normal conditions‚ the cells are in: ❖ homeostastatic „steady“ state Normal cell is confined to relatively narrow range of functions and structure by
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Stem cells Nowadays‚ stem cells are the hottest topic in the medical field. More and more researches are performed to investigate these mystic cells. In order to go deeper into this topic and fully understand it‚ let’s first take a look at the stem cells themselves‚ their origins and characteristics which make them so unique and crucial for the medical field. Stem cells are very complex and complicated‚ and‚ that is why‚ it takes a lot amount of time to get to the bottom of their structure to be
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When you pour water in a teapot‚ it becomes the teapot. Water can flow and it can crash. Be water my friend.” This quote from my childhood hero Bruce Lee has given me inspiration and motivation to adapt to changes in my life and to keep working. Adaptation has always assumed a big role in my life. Whether be it moving to new cities in my grade school years‚ or immigrating to Canada when I was eight years old‚ I was faced with the task of acclimating to my new living environment. My family is based
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Questions of this chapter: **Definition Cell cycle 2. Homologous Chromosome 3. Sister Chromatid 4. Synapsis **Short Questions 1.Describe the chief events of mitosis and show how these differ from meiosis. (V.V.I.) 2. What ‘checkpoints’ occur in cell cycle? What is the role of each? **Long Questions 1.Describe the phases of the cell cycle and the events that characterize each phase. Answer of short Definition is given below 1. Cell Cycle: The cell cycle is an orderly sequence of events
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