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Vegetal Movements
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Vegetal Movements

Vegetal movements respond to the action of hormones or environmental factors such as chemicals, sunlight, or mechanical shocks. These movements can be growth and curvature and locomotion type. Growth and Curvature Movements These movements may be tropisms and nastisms.

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Autosomal Aneuploidies

Down Syndrome Congenital disease characterized by malformations of organs (heart, kidneys), moderate to severe mental retardation, thick tongue, small feet and hands, changes in features. It results from an abnormality in chromosomal constitution: affected individuals have an extra chromosome - which adds to the pair number 21 - in their cells (for this reason the disease is also called trisomy 21).
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Dose compensation mechanism

In 1949, English researcher Murray Barr discovered that there is a difference between the interphase nuclei of male and female cells: on the periphery of female mammalian cell nuclei there is a mass of chromatin that does not exist in male cells. This chromatin makes it possible to identify the cellular sex of individuals by simply examining the interphase nuclei: it is called Barr's sexual chromatin or corpuscle.
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Phenotype and genotype concepts

Two important concepts for the development of genetics in the early twentieth century were those of phenotype and genotype, created by the Danish researcher Wilhelm L. Johannsen (1857 - 1912). Phenotype The term “phenotype” (from the Greek pheno, evident, brilliant, and typos, characteristic) is used to designate the characteristics presented by an individual, whether morphological, physiological and behavioral.
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Multiple alleles in character determination

As we all know, allele genes are those that act in determining the same character and are present in the same loci (plural locus, latin, local) in homologous chromosomes. So far, we have only studied cases where there were only two types of alleles for a given trait (single alleles), but there are cases where more than two types of alleles are present in determining a particular character in the population.
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Glossary - Letter D

D - Vitamin D or calciferol. Fat-soluble vitamin that fights rickets. Main sources: Of animal origin, this vitamin is formed through reactions that occur with provitamins in the skin when the individual sunbathes. Decomposers - organisms that transform dead organic matter into simple inorganic matter that can be reused by the living world.
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Glossary - Letter F

Phagocytosis - Process by which certain cells encompass relatively large particles with the aid of pseudopods. Phagosomes - Membrane bag that contains the particle captured by the phagocytosis process. Phanerogama - See sperm. Vegetative phase - Phase of life where the being does not have developmental or multiplication properties.
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Drugs "mess up" the senses

Increasing drug use has become a matter of concern. The vast majority of people enter this dangerous path without any knowledge of the serious problems that lie behind some moments of apparent well-being and euphoria. It is imperative to open this discussion in the classroom, seeking to enlighten people so that they can consciously and definitively say no to drugs: “Drugs: I'm out, I like me better”. Ecstasy The most commonly used is ecstasy, or simply "E", also known as the "love pill".
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Glossary - Letter Q

Keratin - Fibrous protein present in vertebrate animals; It is the material that constitutes the nails, claws and hair and that permeates the surface of the epidermis. Chemosynthesis - Process in which organic substances are synthesized from energy released in certain inorganic chemical reactions. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Glossary - Letters U / V / W

Ulcer - Generically, superficial lesion of an organ. Peptic ulcers are ulcers of the stomach mucosa and duodenum. Unicellular - Consists of only one cell. Univitelinos - Of same calf. See homozygote. Urea - Substance produced by the vertebrate liver from ammonia and carbon dioxide.
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Bone remodeling

After the bone reaches its adult size and shape, the old bone tissue is constantly destroyed and new tissue is formed in its place, in a process known as remodeling. Remodeling occurs at different speeds in various parts of the body. For example, the distal portion of the femur is replaced every 4 months; The bones of the hand are completely replaced during the entire life of the individual.
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Exercise and increased skeletal muscle

We know that exercise promotes the increase of skeletal muscle. But what increases: the number of cells in the muscle or the volume of existing cells? Physical activity stimulates existing skeletal muscle cells to produce new myofibrils, which causes an increase in cell volume and consequently muscle.
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Smooth or non-striated muscle tissue

Smooth muscle cells do not present transverse striation, characteristic of skeletal and cardiac muscle cells. The reason for this is that the actin and myosin filaments are not aligned along the length of the cell. They are believed to be spiraled into the smooth muscle fiber.
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Epithelial tissue

The outer surface of the body and the inner body cavities of the animals are covered by this tissue. Epithelial tissue performs various functions in the body, such as protection of the body (skin), absorption of useful substances (intestinal epithelium) and perception of sensations (skin), depending on the organ in which they are located.
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Occlusion Zone

Another type of cell junction present in many epithelia is the occlusion zone, a kind of adhesive belt located near the free edge of epithelial cells. The occlusion zone keeps neighboring cells so close that it prevents molecules from passing between them. Thus, substances that may be present in a cavity lined with epithelial tissue cannot penetrate the body unless directly passing through the cells.
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There are animals hiding in the sand!

He even has a nice nickname: geographical animal. And it got that fame because it gets under the skin, drawing lines that look like nonexistent maps. Have you ever been a victim? Well, the geographical animal is frequent in several beaches of our country. The parasite, officially named Ancylostoma, really likes to infect cats and dogs to develop in their intestines.
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What is gelatin made of

Have you ever wondered what gelatin is made of? Always present at the table of desserts of buffets per kilo of the metropolis and easy figure in birthdays of children, the gelatin has animal origin. The gelatin we know consists of four basic ingredients: natural gelatin water sugar or artificial sweetener and artificial flavors food coloring But what exactly is gelatin?
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Root parts

The end of a root is surrounded by a hood of cells called the hood, whose function is to protect the root meristem, a tissue in which cells are actively multiplying by mitosis. It is in the meristem that the new root cells are produced, which enables their growth. Just beyond the extremity is the region where mitosis-grown cells grow.
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Fertilization

A pollen grain, upon reaching the stigma of a flower of the same species, is stimulated to develop by inducing substances present in the stigma. The pollen forms a long tube, the pollen tube, which grows into the pistil until it reaches the egg. It has a small hole in the integuments, called a microphyll, through which the pollen tube penetrates.
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Cold genome sequenced

Of all the common health problems, perhaps none are as familiar as the cold. Inflammation of the upper airways is viral in origin, but as there are many types of rhinoviruses, it is common that each time a new one causes infection. There is no vaccine against the cold, and treatment boils down to dealing with symptoms - such as a runny nose and cough, muscle aches, head and throat, and malaise - that are not caused by viruses but by the body's reaction to the invasion.
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Tissue Organization in Roots and Stems

Young, cross-cut roots and stems show that they are formed by a gathering of tissues. The arrangement of these tissues is specific to each organ and is a typical primary internal structure of each organ. A more complex secondary structure can be seen when an increase in stem and root diameter occurs.
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