Sperm penetrating the egg Introduction (definition) Sexual reproduction is so called because it requires the union of two beings of the same species, one female and the other male. Knowing sexual reproduction (characteristics and information) Unlike asexual reproduction, where there is no need for this fusion, in sexual reproduction the offspring will receive both maternal and paternal genetic characteristics.
Snake: One of the Most Popular Reptile Species Introduction Millions of years ago, planet Earth was inhabited by giant reptiles known as dinosaurs. They existed in the Jurassic period (the time of its greatest evolution); however, due to climate change on Planet Earth, probably caused by a meteor crash, they did not survive and became extinct.
Hormones: Several Important Functions in the Human Body What They Are Hormones are chemicals produced by endocrine glands or specialized neurons. They are extremely important for controlling the functioning of the human body. Various hormones are produced in our body, each having a specific effect.
Structure of Deoxyribonucleic Acid (DNA) What is Deoxyribonucleic Acid - Definition Deoxyribonucleic Acid (DNA or DNA) is the genetic material of all cellular organisms and most viruses. This genetic material carries the information needed to drive protein synthesis and replication.
Influenza viruses: example of a microorganism What are microorganisms - biological definition Microorganisms are a life form that cannot be visualized without the aid of a microscope. These tiny beings can be found in the air, in the ground, and even in man. Contact with humans Regarding their contact with man, this can occur positively and indispensably to life (nitrifying bacteria) or quite negatively, in this case, the detrimental effects on health, and even on the life of man, occurs by contact with pathogenic (disease-causing) microorganisms.
Banana: Source of Vitanin B6 Vitamin B6 Functions in the Human Body: Also known as pyridoxine, vitamin B6, in addition to being essential to the nervous system and skin, contributes to amino acid metabolism, blood cell production, antibodies, acts as a natural diuretic, reduces the symptoms of vomiting and nausea, etc.
Golgi complex: eukaryotic cell organelle. What is Golgi Complex Golgi Complex is the differentiated part of the membrane system within the cell that is found in both animal and plant cells. This cellular organelle is located between the endoplasmic reticulum (RE) and the plasma membrane.
Eukaryotic Cell: Complex Cell Organization and True Nucleus What They Are (Definition) Eukaryotic cells, also called eukaryotic cells, are those that have a definite nucleus (true nucleus) through a nuclear membrane. Main features: - They have organelles inside with well defined functions.
Ernst Mayr: Leading Promoter of Neodarwinism What It Is Neodarwinism is a historical stage that consolidates Darwinian theory. Around the 1940s, scholars assembled a synthesis between two ideas: - The evolutionary process defined by Charles Darwin. - The rationale about the genetic inheritance created by Gregor Mendel.
Ribosomes: important in the protein synthesis process What they are - Definition Ribosomes are small granulations present in the cell cytoplasm and also in the superficial part of the endoplasmic reticulum, forming the rough (granular) endoplasmic reticulum. Origin and composition Ribosomes are formed from prokaryotic and eukaryotic cells of the cell nucleus.
Bibliographic indication for the study of Neurology Neurology Book Indication (bibliography): Neurology Guide Author: Bertolucci, Paulo HF and others Publisher: Manole Neurology Manual - Resident's Manual Author: Baiense, Robson F. Publisher: Roca Neurology Manual Child Author: Mattle, Henrich Publisher: Guanabara Neurology Author: Cambier, J.
Question and Answer About Cell Core Question: What are the main features of the cell core? Answer: The main characteristics of the cell nucleus are: - It is bounded by the nuclear envelope. - Has spherical or ovoid shape. However, the cell nucleus usually follows the shape of the cell.
Photos of Marine Animals Shark Scientific Rank Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Subclass: Elasmobranchii Superorder: Selachimorpha ____________________________ Whale Scientific Rank Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Cetacea Suborder: Mysticeti ____________________________ Animated Dolphin Kingdom Classification Chordata Class: Mammalia Order: Cetacea Suborder: Odontoceti Family: Delphinidae ____________________________ Sea Turtle Scientific Classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Testudinata Family: Cheloniidae ____________________________ Seahorse Scientific Classification Kingdom: Animalia Phylum: Chordata Class: Osteichthyes Sub: Actinopterygii Order: Gasterosteiformes Family: Syngnathidae Genus: Hippocampus ____________________________ Kingfish Scientific Classification Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Act inopterygii Order: Perciformes Family: Labridae Genus: Coris Species: C.
Neuron: The nerve cell in the human body What they are (definition) Neurons are nerve cells, which play the role of driving nerve impulses. These specialized cells are therefore the basic units of the system that processes information and stimuli in the human body. Characteristics and Functions of Neurons - Neurons have three main parts: dendrites (where information is received, it is a receptor part of the neuron); cell body (responsible for integrating information) and axons (carries the nerve impulse from one neuron to another or from one neuron to a gland or muscle fiber).
Urutu Cruise: One of the most venomous snakes in Brazil Key Features of Urutu Cruise: - Bothrops Alternus, popularly known as urutu cruise, is a very poisonous snake. Its poison is one of the most toxic among all snakes found in Brazilian territory. - The Urutu snake cruise lives on average twenty years.
Crocodile: one of the strongest bites in the animal world Information and main features: - Crocodiles are large and semi-aquatic reptiles. - There are 14 species of crocodiles. The best known are: American crocodile, Orinoco crocodile, Freshwater crocodile, Nile crocodile, Persian crocodile, Cuban crocodile and Morelet crocodile.
Oviparous animal: reproduction includes egg laying What they are - biological definition Oviparous are animals whose reproduction form includes laying eggs in the external environment. Summary of Oviparous Characteristics and Information Oviparous females of many species lay their already fertilized eggs, as with many birds and insects.
Sea Crocodile: World's Largest Reptile Largest in the Animal Kingdom - Vertebrates: Among Mammals - The largest mammal in the world is the Blue Whale (Balaenoptera musculus). An adult animal of this species can reach 30 meters in length and 180 tons in weight. - Already the largest land mammal in the world is the Savannah Elephant (Loxodonta africana), a species of African elephant (Loxodonta).
Komodo Dragon: Largest Reptile of the Order Squamata Biological Definition - What They Are These are animals that are part of the Reptile class that have as their main feature the presence of scales on the body. This order includes amphisbae, snakes and lacertils. Summary of main features: - Presence of scales on the body.
Green Hydra: Example of Hydrozoan What They Are - Biological Definition Hydrozoans are aquatic living beings belonging to the cnidarian phylum. Hydrozoans can be found in both salt and fresh water. About 3,000 species of hydrozoans are known, with hydra being one of the best known.
Chickgrass: An example of a parasitic plant. Introduction (what they are) So far it is known that over 4,000 plant species parasitize other plants. A life strategy that confers advantages. After all, parasitic plants save energy by sucking up water and nutrients from the tissues of the plants to which they attach.