Biology

A:

The most important reasons why animals have tails is to help them balance and steer. Some animals use their tails for grasping and grooming, while others use them for display. It is not clear why tails evolved, but once they developed, animals have adapted to use them in many different ways.

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  • What are the characteristics of multicellular organisms?

    Q: What are the characteristics of multicellular organisms?

    A: The defining characteristic of multicellular organisms is the possession of more than one cell. In order for a multicellular organism to function, its constituent cells must be capable of identifying and attaching to one another.
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  • How does algae form?

    Q: How does algae form?

    A: Algae are a type of plant that usually grows on the surface of still water, such as a small pond, when there is an ecological imbalance. In some cases, algae is able to grow at a rapid rate, potentially spreading across the entire surface.
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  • What is a natural ecosystem?

    Q: What is a natural ecosystem?

    A: A natural ecosystem is an ecosystem that occurs as it would without the influence of human beings. The term “ecosystem” refers to all of the plants, animals, fungi, protozoans, bacteria and other organisms that live in the same area. All of these distinct species share highly interconnected lives and, in many ways, function as one unit.
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  • Does a fungus have a nucleus?

    Q: Does a fungus have a nucleus?

    A: Members of the kingdom Fungi have cells with a nucleus. Fungi cells have a cell wall and membrane-bound organelles. The presence of membrane-bound organelles causes fungi to be classified as eukaryotes.
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  • What is a taxonomic key?

    Q: What is a taxonomic key?

    A: A taxonomic key is a method used to classify and identify objects and organisms. It shows a series of choices about the characteristics of different organisms. A user picks from these choices and ultimately finds the identity of a specimen.
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  • What are the general characteristics of bacteria?

    Q: What are the general characteristics of bacteria?

    A: Bacteria are typically single-celled organisms called prokaryotes that may serve as digestive aids, cause disease or aid in decomposition. Unlike eukaryotes, they do not have nuclei. Bacteria contain their DNA and other genetic material as a single strand in their cytoplasm, and they reproduce through a process called binary fission.
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  • What type of organism makes its own food?

    Q: What type of organism makes its own food?

    A: An autotroph is an organism that makes its own food. An autotroph produces its own food via converting simple inorganic molecules into complex organic compounds. These complex organic compounds include proteins, fats and carbohydrates.
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  • At what temperature do viruses die?

    Q: At what temperature do viruses die?

    A: While extreme high or low temperatures technically do not kill viruses, the influenza virus and many others are deactivated at temperatures ranging from 165 to 212 degrees Fahrenheit, the boiling point for water. Since viruses lack many of the basic structures and functions necessary to be considered a living organism, they technically cannot die.
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  • What is the role of producers in an ecosystem?

    Q: What is the role of producers in an ecosystem?

    A: Producers are able to make their own food and do not rely on the ecosystem for nourishment. Examples of producers include photosynthetic microbes and plants.
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  • What is biological science?

    Q: What is biological science?

    A: Biological science, or biology, is the study of living organisms, such as plants, animals and other living organisms. The subject of biology is divided into many separate fields, such as behavior, human anatomy, botany, physiology, zoology, ecology and genetics.
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  • How do the body's systems work together?

    Q: How do the body's systems work together?

    A: The human body is comprised of several different systems that must work together to carry out the various processes necessary for good health. According to the University of Washington, the nervous system controls many of these various systems directly. For example, when the body needs to alter the beating rate of the heart or blood pressure, the brain sends the message to do so via nerve impulses.
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  • What is a polypoid lesion in the colon?

    Q: What is a polypoid lesion in the colon?

    A: A polypoid lesion is a tumor that may or may not have a stalk and is located within the colon of the intestines. A polypoid lesion may be either non-neoplastic, or benign, or it may be adenomatous, or cancerous. Polypoid lesions within the colon are only diagnosed through a colonoscopy, and a lesion is generally biopsied and sent to a laboratory to determine its pathology.
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  • What is the difference between ectoplasm and endoplasm?

    Q: What is the difference between ectoplasm and endoplasm?

    A: Endoplasm and ectoplasm are names for the inner and outer portions of an amoeba’s cytoplasm. Ectoplasm is the clear outer cytoplasmic layer of an amoeba. Endoplasm, on the other hand, is the inner granule-rich cytoplasm of the amoeba.
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  • What is the function of a synaptic knob?

    Q: What is the function of a synaptic knob?

    A: The function of a synaptic knob is to change the action potential that is carried by axons into a chemical message. The chemical message then interacts with the recipient neuron or effector. This process is called synaptic transmission.
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  • How are mitosis and meiosis alike?

    Q: How are mitosis and meiosis alike?

    A: Mitosis and meiosis are similar in that they are both forms of cellular reproduction, and they both, consequently, produce daughter cells. Both processes also use the same four steps: prophase, metaphase, anaphase and telophase.
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  • Where can I find a list of omnivorous animals?

    Q: Where can I find a list of omnivorous animals?

    A: The website for the St. John Fisher College has a webpage dedicated to lists of omnivores and omnivore food sources. Omnivores are animals that consume both plants and animals.
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  • How does glycogen function in living things?

    Q: How does glycogen function in living things?

    A: Glycogen is used as a mobile glucose storage device. The metabolism of glucose is one of the primary ways that the body gets the necessary energy for cells to function, according to "Biochemistry."
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  • How do plants get rid of waste?

    Q: How do plants get rid of waste?

    A: Plants get rid of waste through a process called excretion. Different waste products are excreted in different ways.
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  • What are some characteristics of a Volvox?

    Q: What are some characteristics of a Volvox?

    A: Characteristics of a Volvox include the fact that each cell contains two flagella, which aids in movement through water, and the colonies reproduce asexually. The cells of a Volvox are held together by protoplasm strands.
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  • How does water release heat when humans sweat?

    Q: How does water release heat when humans sweat?

    A: Sweat releases heat and cools down the body through evaporative cooling. When sweat escapes through the skin, it carries some of the body's energy with it in the form of heat. Evaporation releases this energy, siphoning it away from the body and cooling the skin and blood vessels. This cools the blood passing through the circulatory system, reducing the body's core temperature.
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  • Where do praying mantises live?

    Q: Where do praying mantises live?

    A: Praying mantises live all around the world, with most living in warmer temperatures. They tend to choose environments where they can blend in, such as grassy and wooded areas, where they can match the environment to the color of their body to hide from animals that treat them as prey.
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