Organ Systems Project (Digestive‚ Excretory‚ Circulatory‚ Reproductive‚ Nervous) There is an enormous variety of life on our planet Earth ranging from simple cell bacteria to complex multicellular animals. Animals are creatures in the kingdom Animilia‚ one of the kingdoms in Whitakers 5 kingdom system. Their bodies consist of 555tanimal eukaryotic cells. Meaning their cell or cells contain a nucleus‚ are surrounded by a cell membrane (phospholipid bilayer) and can self-reproduce in a free
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on plants and animals. One of the greatest evolutionary changes was the transition of life in water‚ to the transition to life on land. As you can imagine‚ both organisms had challenges moving from this single cellular water environment to a multi-cellular land environment. While the change was difficult‚ this new environment would help organisms flourish in life‚ giving them the ability to reproduce more freely‚ and eat with less competition in their habitat. With moving‚ animals had to learn to
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Nervous System The nervous system is the part of an animal’s body that coordinates the voluntary and involuntary actions of the animal and transmits signals between different parts of its body. In most types of animals it consists of two main parts‚ the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists mainly of nerves‚ which are long fibers that connect the CNS to every other part of the body. The PNS includes motor
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The Senses The sensory system involves hearing‚ touching‚ tasting‚ smelling‚ and seeing‚ which provide data for perception. The eye is a sensory organ held by an orbit that allows vision (a detection of light in a way that provides mental images of objects) and holds photoreceptors. Photoreceptors are used to absorb light energy‚ which are bent by a transparent unit called the lens. Some photoreceptors in the eye are the rod cell and cone cell. Rod cells are used in dim light for coarse images and
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galaxies than when the milky-way galaxy took place that is when earth and the rest of our solar system was formed. According to researchers the earth and other planets all formed at the same time. 2. What is the evolution of Earth’s atmosphere? In particular‚ what has happened to the oxygen levels over the Earth’s 4.6 billion year history? Earth is the only planet that can support human and animal life. The sun is what helped formed all of the planets‚ but made earth different than all
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10/21/14 Nervous system: one of the eleven major body organ systems in animals; coordinates and controls actions of internal organs and body systems; receives and processes sensory information from external environment; coordinated short-term reactions to these stimuli. Cell body: the part that contains the nucleus and most of the cytoplasm and the organelles. Axon: sends messages away from the cell body to other neurons. Dendrite: short‚ highly branched fibers that carry signals toward the cell
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microevolution can be called the small‚ measurable evolutionary changes within a population while macroevolution is large evolutionary change over long periods of time - short term and long term/big picture evolution‚ essentially. Microevolution works on a single population’s genetics and could be said to be the status quo of evolution that occurs consistently and universally while macroevolution occurs over many years or as a result of a drastic change in the population or environment (because a changed
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and separated by an internal wall called septa. Each segment may or may not be different from the other depending on its function. Earthworms also classify with this phylum because it has a true coelom lined with a mesoderm and contain complex organ systems (Miller and Levine 694). Earthworms survive by feeding‚ circulating‚ respirating‚ excreting‚ reacting‚ moving‚ and reproducing. Earthworms survive by feeding and digesting. They use their pharynx to get their food down into their esophagus‚
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discuss the evolutionary relationships between the two members of each pair you have chosen. In your discussion include structural adaptations and their functional significance. a. Green Algae...Vascular Plants b. Prokaryotes....Eukaryotes a. Green Algae and Vascular Plants have clear evolutionary relationships. Both Green algae and vascular plants have many similarities displaying this fact. Just a few of these similarities include that both groups have chloroplasts with chlorophyll
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MB602 Human Resource Management & Change Management Facilitator: Dr. Marian Crowley-Henry Submission Date: 17th November 2011 Assignment 2: Word-count: 1452 Student Name & ID: Martin Wickham 66134951 Self-check on Turnitin used: Yes Declaration I declare that this assignment which I submit in partial fulfilment of the assessment requirements on MB602 is my own work‚ attributes relevant quotes and/or ideas to the respective authors/owners of such quotes/ideas‚ adheres to the
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