Biology

A:

Chrysalis and cocoon are two physical objects that are made in the same phase of a butterfly or moth's life, however, a chrysalis refers to the casing that a butterfly makes when it transforms, whereas a cocoon is a woven case made by a moth during this stage to protect itself. The materials that a cocoon and a chrysalis are made of are also different.

See Full Answer
Filed Under:
  • How much water is required for corn to grow?

    Q: How much water is required for corn to grow?

    A: In order to obtain high crop yields, corn requires between 20 to 25 inches of water per growing season. A low yield can be obtained from 15 to 16 inches of water, but will depend on what part of the season the water is available. It takes 27,000 gallons to equal 1 inch of water per acre.
    See Full Answer
    Filed Under:
  • What is the difference between microbicidal and microbiostatic?

    Q: What is the difference between microbicidal and microbiostatic?

    A: A microbicidal agent kills microorganisms such as bacteria, while a microbiostatic agent only prohibits the growth of such microorganisms. In the presence of microbiostatics, the microorganisms eventually die due to lack of reproduction. Microbicidals are irreversible and lethal, while microbiostatics are reversible.
    See Full Answer
    Filed Under:
  • What is the definition of "neurological sequelae"?

    Q: What is the definition of "neurological sequelae"?

    A: Neurological sequelae are medical conditions associated with damaged neurons resulting from a previous disease, injury or other trauma. The Latin word sequela means "sequel" or "follow." For example, if a person suffers damage or injury to her spinal cord, a neurological sequelae may be complete or partial paralysis of her limbs and/or torso. This condition is known as tetraplegia.
    See Full Answer
    Filed Under:
  • What are carbohydrate chains?

    Q: What are carbohydrate chains?

    A: Carbohydrate chains are chains composed of two to potentially hundreds of carbohydrate compounds called monosaccharides. Once two of these monosaccharides combine, they form a disaccharide. If there are more than two but fewer than 10 monosaccharides in a chain, it is called an oligosaccharide, and a polysaccharide is a carbohydrate chain that consists of hundreds of monosaccharides.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What happens to excess glucose?

    Q: What happens to excess glucose?

    A: The human body has several mechanisms to store or eliminate excess glucose from the blood. Glucose can be converted into a larger molecule called glycogen that is typically stored in the liver and muscles. When the body needs glucose, glycogen is broken down to provide an energy source.
    See Full Answer
    Filed Under:
  • Why is it important for organisms to maintain homeostasis?

    Q: Why is it important for organisms to maintain homeostasis?

    A: Homeostasis is the process through which an organism maintains certain internal conditions, such as a human body's internal mechanisms maintaining body temperature at a specific level to prevent over or under heating; this process is important because it makes it possible for cells and organs to function properly. For example, certain parts of the human body cease to function if they become too hot or too cold; this is why it is possible for people to freeze to death or die from overheating.
    See Full Answer
    Filed Under:
  • Is it possible to have twins from two different dads?

    Q: Is it possible to have twins from two different dads?

    A: It might sound like a wayward twist from a movie, but it is possible for fraternal (not identical) twins to come from two different dads. The circumstances must be very specific, but some experts estimate that 1-2 percent of fraternal twins have different fathers.
    See Full Answer
    Filed Under:
  • Why are decomposers important?

    Q: Why are decomposers important?

    A: Decomposers are important because they are crucial for the proper functioning of ecosystems. They recycle the minerals found in dead plants and animals back into the food chain. Ecosystems do not waste energy or materials, and as such, the decomposers capitalize on any remaining energy in a dead organism and make the minerals available to the entire biome.
    See Full Answer
    Filed Under:
  • What is an analogy for the cell wall?

    Q: What is an analogy for the cell wall?

    A: A good analogy for the cell wall is a sturdy fence or wall surrounding a castle, protecting the structure from harm and only allowing entrance by outsiders through specified gates and openings. In this scenario, the wall also keeps inhabitants safe inside, preventing them from venturing out into potential danger.
    See Full Answer
    Filed Under:
  • What are some of the primary functions of proteins?

    Q: What are some of the primary functions of proteins?

    A: Some of the primary functions of proteins include their enabling the biochemical reactions that help digest food and respond to stimuli, replicating DNA and providing the structural building blocks for muscles, skin and other tissues. Acting as catalysts, enzymes are the protein-based molecules that play an important role in a wide range of organic processes. Proteins also help to transport nutrients and vital substances, one example being hemoglobin, which transports oxygen throughout the bloodstream.
    See Full Answer
    Filed Under:
  • How high can a human jump?

    Q: How high can a human jump?

    A: The greatest human leapers in the world are able to jump over a bar suspended nearly 8 feet off of the ground. While the world record consistently increased for a period of about 100 years, recently, it appears that competitive high jumpers may be approaching the human body’s biological limits. Most average humans jump only a fraction of this height.
    See Full Answer
    Filed Under:
  • What are examples of indirect contact?

    Q: What are examples of indirect contact?

    A: Indirect contact includes airborne transmission, object contamination, food and water contamination and human-to-animal exchange. Examples of direct contact include human touch and spray or exchange of bodily fluids.
    See Full Answer
    Filed Under:
  • How do diatoms and dinoflagellates compare?

    Q: How do diatoms and dinoflagellates compare?

    A: Diatoms and dinoflagellates are both types of phytoplankton that live in oceans throughout the world, but they contain unique physical characteristics that make them easy to distinguish from one another. Diatoms and dinoflagellates fall into the broad category of phytoplankton. These two groups are the most common of all phytoplanktons and have single cells but vary in body size and shape.
    See Full Answer
    Filed Under:
  • How is amber formed?

    Q: How is amber formed?

    A: Amber is formed by the fossilization of resin due to oxidation and polymerization. Resin is a natural part of plants often released as a defense mechanism. There is no single tree responsible for the formation of amber.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What are the two main types of anaerobic respiration?

    Q: What are the two main types of anaerobic respiration?

    A: The two main types of anaerobic respiration are alcoholic fermentation and lactic acid fermentation. These methods of respiration occur when the amount of oxygen available is too low to support aerobic respiration.
    See Full Answer
    Filed Under:
  • Why do cells need energy?

    Q: Why do cells need energy?

    A: All living cells need to perform a variety of activities, and these activities require energy. Reproduction, in particular, takes a significant amount of energy. Cells that are starved of energy sources eventually die.
    See Full Answer
    Filed Under:
  • What is the difference between a protozoa and a bacteria?

    Q: What is the difference between a protozoa and a bacteria?

    A: Bacteria and protozoa are very distantly related, with bacteria classified as prokaryotes and protists as eukaryotes. This means that protozoa are more closely related to humans than either is to bacteria. The two organisms are structurally distinct. Bacterial cells lack a nucleus, and protozoa contain organelles, such as mitochondria.
    See Full Answer
    Filed Under:
  • What are the advantages and disadvantages of cloning?

    Q: What are the advantages and disadvantages of cloning?

    A: One advantage of cloning includes the protection of endangered species from extinction because the members of the species can have their cells cloned to create other members. Cloning also helps in improving food supply. One disadvantage is that the diversity of genes is lost when the process is carried on regularly. A risk of extinction is highly possible in the case of disease outbreaks due to similar genetic makeups.
    See Full Answer
    Filed Under:
  • What is a functional adaptation?

    Q: What is a functional adaptation?

    A: A functional adaptation is a structure or behavior that has arisen sometime in the evolutionary history of a species to aid in that species', or its predecessors', survival. A waterproof eggshell, for example, is a functional adaptation that arose among reptiles in response to the need to lay eggs in dry, dessicating environments where permeable eggshells would have dried out.
    See Full Answer
    Filed Under: