Biology

A:

Chromosomes can be found in the nucleus of every plant and animal cell; these combinations of DNA and protein are essential components of genetic information. DNA is a long chain of genetic information that would not be able to fit inside a cell without the structural assistance of chromosomes, and this information helps determine a plant or animal's individual traits, including physical characteristics and behavioral capabilities. The DNA that is contained in chromosomes is passed from parents down to offspring.

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  • What is the purpose of photosynthesis?

    Q: What is the purpose of photosynthesis?

    A: Photosynthesis is a process that allows plants to harvest energy in sunlight and store it chemically, by producing sugars. Sugars hold energy in their molecular bonds; when the plant breaks down these bonds, energy is released that the organism can then use. Although green plants are the most famous photosynthesizing organisms, some bacteria, algae and protists carry out the process as well.
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  • How many teeth does a mosquito have?

    Q: How many teeth does a mosquito have?

    A: Mosquitoes don't have any teeth. Mosquitoes bite with a long, serrated, pointed mouth called a proboscis. The proboscis consists of one tube that pierces the skin and sucks blood and another tube that pumps out saliva containing a mild pain-killer and an anti-coagulant.
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  • What is the definition of social factors?

    Q: What is the definition of social factors?

    A: Social factors are things that affect lifestyle, such as religion, wealth or family. It is important for businesses to be aware of these factors as they change because it is a very important component in proper marketing.
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  • What are some examples of saprophytic bacteria?

    Q: What are some examples of saprophytic bacteria?

    A: Examples of saprophytic bacteria include cheese mold, lactic acid, yeast and rotting kitchen waste. Saprophytic bacteria are fungal organisms that feed off of decaying organic matter. The term "saprophyte" refers specifically to fungal and bacterial saprotrophs, but animal saprotrophs are known as saprozoites.
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  • What is the structure of RNA?

    Q: What is the structure of RNA?

    A: The structure of RNA is a single-stranded molecule made up of basic units called nucleotides that contain a nitrogenous base, a five-carbon sugar and a phosphate group. Although there is only one strand of RNA, as opposed to the two stranded double helix of DNA, it does not always follow a linear pattern. Sometimes the molecules form loops and the nitrogenous bases bond.
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  • What does moss eat?

    Q: What does moss eat?

    A: Moss is an autotroph, which means it makes its own food using sunlight, water and carbon dioxide. Moss is considered a producer, but few animals actually eat it.
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  • What is the difference between spontaneous generation and biogenesis?

    Q: What is the difference between spontaneous generation and biogenesis?

    A: Spontaneous generation is the belief that life can be formed from nonliving things, whereas biogenesis is the creation of life from other living things. Several experiments have proved that spontaneous generation is an illogical body of thought.
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  • What is ATP and what is its role in the cell?

    Q: What is ATP and what is its role in the cell?

    A: Adenosine triphosphate, or ATP, is the energy currency of life, the way that individual cells store and use chemical energy. Any food or other source of energy a cell takes in is converted to ATP, in which form the mechanisms of the cell can easily use it. It does this by shedding a phosphate group, becoming adenosine diphosphate, or ADP, a highly energetic reaction that powers all of a cell's molecular machinery.
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  • What is the largest blood vessel in the human body?

    Q: What is the largest blood vessel in the human body?

    A: The largest blood vessel in the human body is the aorta. Rising up from the left ventricle of the heart, the aorta curves down and passes through the chest cavity and into the abdomen.
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  • Why are animals important?

    Q: Why are animals important?

    A: Animals are important for many reasons, including the assistance they give to plant ecosystems, the psychological and emotional support they can offer to humans, and the knowledge gained from the human study of them. Some of the most important animals include primates, bats and bees.
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  • What is the definition of fungi?

    Q: What is the definition of fungi?

    A: The fungi are a kingdom in the eukaryote domain. Fungi are important decomposers in all ecosystems because they can break down a wide variety of organic matter. Lignin, a component of wood, would not get broken down without fungal decomposers, so the nutrients would not be recycled.
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  • What are the components of an ecosystem?

    Q: What are the components of an ecosystem?

    A: An ecosystem is comprised of abiotic and biotic organisms. Energy cycles through the abiotic and biotic organisms to maintain balance within the ecosystem. The abiotic parts of an ecosystem include the non-living components, such as air, water and the basic compounds of the environment. Climatic and edaphic factors are several abiotic components of an ecosystem.
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  • What is the glycemic index?

    Q: What is the glycemic index?

    A: The glycemic index is a method for ranking the impact of a carbohydrate-containing food on blood glucose in comparison to a reference food, such as glucose. A food with a high glycemic index raises blood glucose higher than a food with a low glycemic index.
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  • What is Charles Darwin famous for?

    Q: What is Charles Darwin famous for?

    A: Charles Darwin, an English scientist, wrote the book, "On the Origin of Species by Means of Natural Selection," which has served as the basis for modern theories concerning evolution since its publication in 1859. While evolutionists existed before his time, Darwin's theory of natural selection changed the way humans think about the natural world.
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  • What is a zygote?

    Q: What is a zygote?

    A: A zygote is the result of the union of an ovum (egg cell) and a sperm cell. It remains a zygote until it begins to divide; at that point, the zygote becomes an embryo.
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  • What are characteristics of nonliving things?

    Q: What are characteristics of nonliving things?

    A: A nonliving thing is a body or object that is inanimate or dead. It is anything that lacks or stops displaying the characteristics of life. One of the most significant characteristics and differences of a nonliving to a living thing is its lack of protoplasm, which is the living substance of cells. Without protoplasm, nonliving things are not capable of reproduction, growth, movement, respiration and metabolism.
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  • What are the main differences between mitosis and meiosis?

    Q: What are the main differences between mitosis and meiosis?

    A: Though both meiosis and mitosis involve the division of a cell, meiosis generates a cell used for sexual reproduction, while mitosis generates a cell used for growth. Mitosis produces two cells that are identical to the parent cell. Meiosis produces four cells that each contain half the number of chromosomes of the parent cell. Chromosomes are DNA containing genetic information.
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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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  • What is the function of chlorophyll?

    Q: What is the function of chlorophyll?

    A: Chlorophyll’s function in plants is to absorb light and transfer it through the plant during photosynthesis. The chlorophyll in a plant is found on the thylakoids in the chloroplasts.
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  • What do photosynthesis and respiration have in common?

    Q: What do photosynthesis and respiration have in common?

    A: Photosynthesis and respiration are complementary processes that both involve carbon dioxide, water, glucose and oxygen, and this is what they have in common. Essentially, they are the same reactions, although the reactions occur in reverse. Photosynthesis converts water and carbon dioxide into glucose and oxygen, while respiration converts glucose and oxygen into carbon dioxide and water.
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  • What are the seven classifications in science?

    Q: What are the seven classifications in science?

    A: The seven classifications of science are kingdom, phylum, class, order, family, genus and species. These classifications are nested; for instance, organisms must be in the same kingdom to be in the same phylum.
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