Flatworms Essay

An experiment was conducted to study and explore the circulatory system by exposing Lumbriculus variegatus, black worms, to household drugs. Lumbriculus variegatus was chosen as the experimental organism because of their transparent bodies and their simple physiology.

Pill bugs live in an outside environment where they are able to get the necessary amount of energy from organic matter. This environment is where water and organic matter is plentiful. In there natural habitat, pill bugs are found in dark, damp places. Living in moist places is important for pill bugs so they can take in enough water, and if water is not available, they group together to prevent water loss. Pill bugs most often live in dark places because they have a negative photo taxis. Darker places also tend to be cooler and damper. Each experiment connected to how the pill bugs would behave in a certain environment. We were able to test these experiments in a laboratory way to see if the natural environments were also true.

The structural features of the pill bug allows it to have advantages over other organisms. The pillbugs multi-segmented body allows it to roll into a ball if it feels threatened or in danger in order to protect its self. Another advantage of have a multi-segmented body is it allows the pillbug to semi curl to flip its self back over if it is knocked down. The antennae is used to sense the environment around it, even if it is in ball shape form. The advantages of this is the pillbug will know whether or not it is safe to come out of its ball shape form, if it had been threatened earlier. The antennae also allows the pillbugs to send signals to one another, it is a source of communication between them. The color of the pill

In this experiment, contractions of the earthworm gut are measured in an organ bath with a force transducer. The effect of neurotransmitters and ionic concentrations on contraction strength and rate will be investigated.

In the story “Lord of the Flies” by William Golding, he shows how the boys lost all innocence and civilization. The boys went from having innocent child minds to taking lives of other people, acting savage, and losing all civilization due to problems on the island. The boys had forgotten where they came from and became savage in order to survive; it was the need of survival that caused the loss of innocence among the boys.

Adaptive radiation of different organisms have occurred throughout geological time through the filling of ecological niches. Organisms different from one another are capable of radiating greatly, as they evolve traits that allow them to thrive better in their environment. The Anolis lizards of the Caribbean islands are a great example of a single genus to have radiated not once, but multiple times through very similar mechanisms. Different populations of the Anolis phenotypically vary in their morphological traits to facilitate adaptation to particular niches. These phenotypic variations have evolved in convergence in more than one occasion, as recently discovered fossil specimens show similar patterns in morphology to modern Anolis.

This laboratory exercise was performed to visualize the effects of various drugs on the heart rate of Daphnia magna. The four drugs tested consisted of: Lidocaine, Acetylcholine, Caffeine, and Nicotine. These drugs were designed to have an apparent effect on the average heart rate of the Daphnia. The laboratory exercise was divided into two parts and procedures: measuring the basal heart rate of Daphnia, and measuring the drug induced heart rate of Daphnia. In order to measure the basal heart rate, various Daphnia were obtained and observed under a microscope at 40x magnification for two separate trials. Using the same technique, the drug induced heart rate with each drug (Lidocaine, Acetylcholine, Caffeine and Nicotine) was measured and

Society is a man made system that allows humans to have an orderly life, and it is important because of its provision of betterment of the world. It is essential for the world to have an organizational system like society, considering that we would struggle to better our lives without someone to take charge or lead us. Feral children are children who lack exposure to society and its factors. They do not experience society like most people do. Because of this, they tend to act wild and abnormal in comparison to normal social standards. In the book Lord of the Flies, the boys stranded on an island lack an organized society. Without society and social skills, it would be hard to find a way to better lives. We would not feel a need to fix the

The purpose of this essay is to explain the mechanisms of neural communication, and the influence that different drugs have on this communication. The nervous system is made up of several cells that are called neurons, which are situated inside the Central Nervous System (Martin, Carlson & Buskit, 2013). Neurons comprise of three mechanisms, a cell body which is referred to as the soma, dendrites and an axon (Pinel, 2011).

The author’s analysis of one of the most famous poems of all time, “The Flea” leads us back in time to a patriarchal society of seventeenth century England. During a period of unrest that has often been referred to as “the world turned upside down” (Fritz & Robison 88). It was a time of Civil War between three religious groups, the Puritans, the Anglicans (crypto-Catholic), and the Protestants (Social History of England). Unfortunately, during this same timeframe, England was stricken by The Great Plague caused by the bite of the rat flea, killing off hundreds of thousands of citizens (Johnson 2017). The poet of “The Flea”, John Donne, has since been classified as a metaphysical poet whose talent could startle the reader and encourage previously unacknowledged perspectives (John Donne 2015). His use of rigorous and inventive conceits (long metaphoric imagery), along with his elusive arguments, innovative sentence structures, philosophy, religion, and inventive syntax created a twist of humor towards seventeenth-century society (John Donne 2015). Donne was a persecuted Catholic with a passionate personal relationship with his religion

I think that the people that you shouldn’t train the animals should be put down because, their the one training the dog to be mean to people that they don’t know.

Heartworm disease is a serious and potentially deadly disease that ultimately affects animals all around the world. A heartworm is a blood-borne parasite called Dirofilaria immitis that resides in the heart and surrounding large blood vessels of infected animals. The presence of heartworms in the body often leads to severe lung disease, heart failure, and damage to other organs. Heartworm disease affects a variety of species including pets, wildlife, and although rare, humans.

Both parties failed to be negligent in this scenario. Although Brian was speeding, Randy failed to yield. The main defense should be whether this accident could have been prevented if Randy hadn’t failed to yield. Both were in the wrong doing as both broke the law. If Brian wasn’t speeding, could he have stopped ahead of time before striking Randy? Both parties were an example of comparative negligence. They each contributed to the accident; therefore, this tort will dictate how the responsibility for this accident will be shared between both of the parties whom were involved and suffered bodily injury or property damage.

Rats are various medium sized rodents. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, R. norvegicus. Many members of other rodent genera and families are also called rats and share many characteristics with true rats. A rat has an average life span of 2-3 years[1].

Bed bugs are back in a big way. In the past 15 years their numbers have exploded. In the past, bed bugs ceased to be a problem in North America but they were still alive and well in other countries. Today, their numbers are on the rise again due to travel and immigration from countries that never managed to get rid of them like we did. The bed bug can now be found in every U.S. state. Unfortunately, once you have bed bugs, you’re going to need help.