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Biology Essay

OSMOREGULATION IN CLAMWORMS
The greater the dilution, the greater the increase in the body weight. The worm tends to accommodate itself to the new environment. After the increase in the body weight, they tend to return back to the normal weight if they are left in the original sea water. These euryhaline osmoregulators are thus capable of surviving in reduced, increased salinity levels. They are found to show two types of blood osmo regulation. First they act as hyper osmotic in the diluted sea water with greater osmo
Pages: 5 (1250 words), Essay
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Organism Physiology Paper/Discussion Questions
They have good eyesight and a sticky tongue which help them get their prey easily. Frog’s eyes also help it take its prey into its belly. “Frogs eyes have a surprising auxiliary function: they help in swallowing” (Anonymous, 1999).If we talk about the skin of a frog, we can say that the skin plays a vital role in the survival of a frog. The skin helps a frog breathe and drink. It is a fact that frogs cannot drink water. Therefore, their skin helps the take required moisture inside. The
Pages: 4 (1000 words), Essay
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Oral herpes
This altered nuclear structure is often seen during microscopic examination as an enlarged and lobulated or multinucleated structure that leads a medical practitioner diagnoses of HSV infection (Davis). Bridges and Shuman noted that these viruses show up anywhere in the body and can spread even if these sores are not visible. Other conditions, such as general illness, fatigue, physical or emotional stress, immunosuppression, trauma or menstruation bring about the outbreak of HSV-1.Herpes
Pages: 5 (1250 words), Essay
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Oldham Pond
For the organisms in the pond, Ad Libitum sampling was used, where much information about the organisms was measured (John & Eugene 106).According to the results, the temperature of the water was comparable to that of the surrounding air. The slight difference is the difference in conductivity of heat by air and water. Dissolved oxygen levels were also concurrent to those that are recommendable (11 mg/l). Conductivity, however, was found to be higher than recommended. Recommended conductivity
Pages: 4 (1000 words), Essay
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Outline some of the molecular changes that are thought to contribute to the progression of oral cancer. Use specific examples and explain the mechanisms by which these factors exert their action.
Of oral cancer from dysplasia to the stage of metastasis is associated with multistage pathologic changes caused by molecular alterations.10 The pathologic phenotypes involved in cancer progression include increase in cell proliferation, horizontal spread and survival, which are associated with molecular changes such as altered expression of molecules such as p53 that regulate cell cycle, altered growth factor response, altered protein metabolism and synthesis, and cell immortality associated
Pages: 10 (2500 words), Essay
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Outline the contribution of mitochondria to the cellular energy budget. Comment on the ethical implications of mitochondrial DNA analysis
These molecules include ATP (adenosine tri-phosphate) and NADH (nicotinamide adenine dinucleotide). These molecules are responsible for providing the energy needed by the cell for various functions. ATP is the most crucial energy molecule in cellular respiration. It is made of an adenosine base, ribose sugar, and a phosphate chain. The key to ATP’s high energy storage capacity is the high-energy phosphate bond within the phosphate chain (Starr & McMillan 2011, p.The energy pathway to be
Pages: 8 (2000 words), Essay
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Ordovician Mass Destinction
This vindicates the fact that even Nature plays a pivotal role in destruction and extinction.Climate change and habitat destruction occurred during the Ordovician-Silurian period which vastly affected the marine species and led to their extinction. After this most of these extinct species could not recover from the effects and hence led to permanent lossResearch has tried to pinpoint the exact events that led to mass destruction of most marine life forms during this event however a few possible
Pages: 8 (2000 words), Essay
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Organisation of the body
These are peanut-shaped organelles with double membranes, whereby the inner membrane is folded to form cristae. Aerobic cellular respiration occurs here, as well as the breakdown of sugar molecules for production of energy in the form of ATP (Lloyd & Beck, 2012: p19).This is a large, oval organelle, which has at least one nucleolus and contains DNA. It also holds the cell’s hereditary material. Its main function is to control the activities of the cell, particularly with regards to
Pages: 7 (1750 words), Essay
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Organisation of the body
The hemogloblin performs the role of taking in oxygen from the lungs and consequently releasing it to the rest of the body.The ciliate epithelial cells have an overlapping and flat structure which facilitates the minimal use of space in the cell. It equally assists in providing a barrier to the exterior. Furthermore, it assists in offering a lightweight skin structure. In addition, it facilitates the shedding of individual cells.The sperm cell is specialized to carry out its function in a
Pages: 6 (1500 words), Essay
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Organisation of the body
The hemogloblin performs the role of taking in oxygen from the lungs and consequently releasing it to the rest of the body.The ciliate epithelial cells have an overlapping and flat structure which facilitates the minimal use of space in the cell. It equally assists in providing a barrier to the exterior. Furthermore, it assists in offering a lightweight skin structure. In addition, it facilitates the shedding of individual cells.The sperm cell is specialized to carry out its function in a
Pages: 6 (1500 words), Essay
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Ontogenetic change in skull morphology and Mechanical Advantage in the Spotted Hyena (Crocutacrocuta)
The ontogenetic trajectories were determined if they differed significantly. As a result, the sample sizes obtained from a pair of bootstrap used varied with ages. On the other hand, size of the muscle and mechanical advantage was determined first using traditional methods. For instant, size of the adductor muscle was estimated across the zygomatic arches by maximum width. The mechanical advantage was determined by dividing into lever by the out lever.The age at which the zygomatic arch breath,
Pages: 4 (1000 words), Essay
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