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  • Biology
    In order to make such a Punnett Square, the genotypes of each parent need to be determined. A genotype is the allele pairs that an individual has for a trait. Alleles are variations of genes. These...

    Asked by enotes on via web

    1 educator answer.

  • Biology
    Biology is the study of living organisms, both single and multiple cell, including plants, animals and humans. In short, it involves the study of every living thing for the purpose of...

    Asked by enotes on via web

    2 educator answers.

  • Health
    Muscle contraction takes place with Adenosine Triphosphate (ATP) acting as the source of energy. The following reaction represents what exactly happens when muscle contraction takes place Actin +...

    Asked by ironstrike on via web

    1 educator answer.

  • Science
    Here are four major reasons that human beings are able to survive on Earth as opposed to any other planet in our Solar System. 1) Water is the common denominator for all life on the planet,...

    Asked by paris_goffiagan on via web

    1 educator answer.

  • Science
    The epidermis is the outer layer of human skin. The layer underneath it is called the dermis. The epidermis functions as a protective layer over most of the human body, keeping out pathogens and...

    Asked by byron1023 on via web

    1 educator answer.

  • Biology
    A cotyledon can also be referred to as a seed leaf. With that being said, for a seed plant, it is the leaf of the embryo of the seed. How many leaves are present determine how the plant is...

    Asked by gayatriitsme on via web

  • Science
    Since the question does not specify on what type of growth refers, the answer provided is about the population growth that usually is analyzed using statistical models. For example, the exponential...

    Asked by smooch11 on via web

  • Science
    For acids used in therapeutic processes, we can mention here Aspirin (the acetylsalicilic acid or ASA), Vitamin C (the ascorbic acid) and boric acid H3BO3. Aspirin is used in flu treatment, Vitamin...

    Asked by coffeeattack on via web

    1 educator answer.

  • Science
    The nuclear envelope and a school office both house the administration. The inside of these places is where all the important decisions are being made. The membrane (office) also serves as a...

    Asked by elli101 on via web

    1 educator answer.

  • Reference
    I will not write out your paper or your introduction for you but I will help you organize your ideas into an appropriate format. The introduction to your paper should introduce the reader to the...

    Asked by coco993 on via web

    1 educator answer.

  • Science
    Both statements are actually false for mallards. What we refer to as "basic plumage" actually refers to the dull-colored feathers the ducks produce and soon molt in between moltings. Ducks must...

    Asked by Jsullivan524 on via web

    1 educator answer.

  • Science
    Osmosis describes the movement of a solvent (in this case, water) from areas of low solute concentration to areas of high solute concentration, seeking to balance the two regions. We can eliminate...

    Asked by enotes on via web

    1 educator answer.

  • Science
    Epidemiology is the study of health and disease; specifically, the way that a population exists in a healthy state, or in a diseased state. Microbes refer to single-celled organisms. Thus,...

    Asked by user8717988 on via web

    1 educator answer.

  • Reference
    The acronym STD stands for sexually transmitted disease. STI stands for sexually transmitted infection, which is basically just another term for STD. An STD is a disease that is transmitted from...

    Asked by monique06 on via web

    1 educator answer.

  • Science
    The number of bones a person has in their body generally depends on their age. A human newborn baby has approximately 270 bones in his or her body. As the person ages and develops, some of the...

    Asked by bodhi on via web

    1 educator answer.

  • Science
    Passive and active transport are both biological terms and have to do with the movement of chemical species from one side of a semi-permeable membrane to another. Passive transport is a type of...

    Asked by go2lunch on via web

    1 educator answer.

  • Science
    On a nutrient media like agar, bacteria can be grown in colonies in laboratories, which appear as a solid mass when seen through the naked eyes. Studying certain characteristic features of these...

    Asked by libbysimone on via web

    1 educator answer.

  • Science
    Gram staining is a visualization method and a general cataloging technique for bacteria. A majority of bacteria can be divided into two very general classes, Gram positive and Gram negative,...

    Asked by libbysimone on via web

    2 educator answers.

  • Science
    Proteins are considered macromolecules because of their size. Large molecules made up of repeating units are called polymers. The small units or monomers that make up proteins are called amino...

    Asked by Ineedhelp222222 on via web

    1 educator answer.

  • Biology
    The reproductive cells involved in the process of reproduction are called gametes. One gamete does not contain the entire genetic material to form the diploid, hence, to form a zygote, which is the...

    Asked by kirstenreeves on via web

  • Science
    The major difference between prokaryotic cells and eukaryotic cells is that eukaryotic cells contain a nucleus and membrane-bound organelles while prokaryotic cells do not. So while in eukaryotic...

    Asked by awesome9921 on via web

    1 educator answer.

  • Science
    Let's define both terms. Bioremediation is using natural organisms to naturally clean up pollutants in a natural setting. Usually this means microbes like bacteria. Phytoremediation is a subset...

    Asked by iza-a on via web

    1 educator answer.

  • Science
    Advances in technology have shown that we use all (100%) of our brain, although it may not be used all at the same time. The parts of the brain used depends upon the function you are trying to...

    Asked by oscine123 on via web

    2 educator answers.

  • Science
    Bioremediation is the use of living organisms to clean up a pollutant in a natural setting. Biodegradation is basically another term for this. It is the chemical breakdown of unwanted waste...

    Asked by iza-a on via web

    1 educator answer.

  • Science
    The skeletal system is the system of bones in an organism's body that gives it structural rigidity. Also often included in the skeletal system are the cartilage, ligaments, and tendons that...

    Asked by yukikiminoto on via web

    1 educator answer.

  • Science
    Neoteny, derived from the German word Neotenie which literally means “young”), is a case of pedomorphosis which means that the adult form of a species seems to possess certain features that are...

    Asked by nalinidwivedi on via web

    1 educator answer.

  • Science
    Prokaryotic cells do not have membrane bound organelles. However, they have DNA in their cytosol as well as ribosomes. They can have pili as well as flagella. Examples are bacteria and archaea....

    Asked by user2013765 on via web

    2 educator answers.

  • Science
    DNA stands for deoxyribonucleic acid. It is composed of three major parts: the central deoxyribose sugar, a nitrogenous base, and a phosphate group. The numbering system of 3' and 5' corresponds...

    Asked by Sam851 on via web

    1 educator answer.

  • Biology
    1. Zeroes between other digits are always significant. Zeroes at the end of a number are only significant if they are behind a decimal point. 405000 has 3 significant digits (could be written...

    Asked by c-lt84 on via web

    1 educator answer.

  • Health
    First, let's work with and define three very closely related terms: neoplasm, tumor, and cancer. A neoplasm is a growth mass on tissue that arises from abnormal cell growth and division. A tumor...

    Asked by ladyc60 on via web

    1 educator answer.

  • Science
    The reason is due to osmosis, or the movement of water through a semi-permeable membrane. In this case, the outer skin of the grape is the membrane, thus separating the inner pulp of the grape...

    Asked by MissInvalidArgument on via web

    1 educator answer.

  • Science
    A neuron membrane potential is the build up of an electrical charge within the nerve cell. These electrical charges occur because of a build up of ions on one side of the membrane versus the other...

    Asked by monie76 on via web

    1 educator answer.

  • Science
    An action potential is the firing of an electrical impulse along a neuron. A neuron is a nerve cell that consists of the soma, dendrites, and an axon. The electrical nerve impulses that a nerve...

    Asked by monie76 on via web

    1 educator answer.

  • Biology
    At fertilization, an egg which has an X chromosome is fertilized by a sperm which can either have an X chromosome(which will result in a female child) or a Y chromosome(which will result in a male...

    Asked by monique06 on via web

    2 educator answers.

  • Biology
    This question is a little unclear so I'll mention two aspects of how biological components of being effect the female and male genders. The first aspect of effects on gender is through the...

    Asked by monique06 on via web

    1 educator answer.

  • Science
    There are many, many enzymes in the human body that are designed for repairing specific types of DNA damage. Damage to DNA can come in many different forms. UV radiation can cause base pairs to...

    Asked by vladius on via web

    1 educator answer.

  • Science
    In vertebrate animals, the embryo is formed by the fusion of the sperm cell from the father and the egg cell from the mother. The resulting embryo is often divided into two different regions, or...

    Asked by littleseal on via web

    1 educator answer.

  • Biology
    The nucleus is the most important organelle in the cell. It contains the genetic material, the DNA, which is responsible for controlling and directing all the activities of the cell. All the RNAs...

    Asked by amjacob on via web

    1 educator answer.

  • Biology
    Phospholipids are amphipathic in nature. ie., they form a structure with a polar head and a non-polar tail. The polar head is hydrophillic while the non-polar tail is hydrophobic. This property...

    Asked by amandab64 on via web

    1 educator answer.

  • Biology
    A monounsaturated fat is an organic compound. Its components consist of carbon, hydrogen and oxygen atoms. However, the arrangement of atoms is a single double bond in the fatty acid chain with all...

    Asked by bliana on via web

    1 educator answer.

  • Health
    This statement is true. The kidneys play a role in waste excretion. In particular, the kidney helps the body get rid of waste nitrogen in the form of urea. The urea collects in the kidneys and...

    Asked by tubee on via web

    1 educator answer.

  • Science
    Amino acids are the small molecule building blocks that make up proteins. Each amino acid contains a carboxylic acid and an amine group. These groups are both polar entities. The phospholipid...

    Asked by mashymash on via web

    1 educator answer.

  • Biology
    We are talking about two different chemical reactions here, both of which are prevalent in biological systems. The first reaction is the dehydration reaction. This involves the loss of water from...

    Asked by bliana on via web

    1 educator answer.

  • Biology
    Yes it is possible. Having extra chromosomes is a result of meiotic non disjunction. This is when during meiosis homologous chromosomes fail to segregate. If one of the gametes has an extra...

    Asked by natalyaisthebest on via web

    1 educator answer.

  • Science
    It looks like you are dealing with the concept of tonicity. Tonicity deals with osmotic pressure and the flow of water via osmosis from one solution to another separated via a semi permeable...

    Asked by enotes on via web

    1 educator answer.

  • Science
    Sexual reproduction is advantageous in a genetic sense because it gives a population a much greater genetic variety from which to work with. Asexual reproduction gives offspring that are pretty...

    Asked by vcalma on via web

    1 educator answer.

  • Science
    Hormones are small molecule chemical messengers in the body. They are secreted from different glands in the body that make up the endocrine system. The hormones travel through the body to their...

    Asked by monie76 on via web

    1 educator answer.

  • Biology
    Nucleic acids are a type of polymers (macromolecules). Nucleic acids may be the DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). The DNA stores genetic information while RNA translates this...

    Asked by rubiya on via web

    1 educator answer.

  • Science
    Brandi I am going to assume that the (8+1+1) typed in your question is some type of error because I cannot figure out what it would mean in this context. Proteins are essentially long polymeric...

    Asked by enotes on via web

    1 educator answer.

  • Science
    The question about defining viruses as living organisms or not is a question that has been around for some time and continues to be debated by biologists. To a very real extent, the answer depends...

    Asked by whitespace on via web

    1 educator answer.

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