Published: Wed, 28 Sep 2016 11:13:39 +0000
2016-09-28T11:13:39ZAnimal cells are eukaryotic cells that contain various membrane-bound organelles.
2016-09-28T11:13:39ZThe cell membrane is a thin, semi-permeable barrier that surrounds and encloses the contents of a cell. It supports and helps maintain a cell's shape.
2016-09-28T11:13:39ZThe cell nucleus is the command center of our cells. It contains our chromosomes and genetic information needed for the reproduction of life.
2016-09-28T11:13:39ZPlant and animal cells are similar in that both are eukaryotic cells. However, there are several important differences between these two cell types.
2016-09-28T11:13:39ZA plant cell is a eukaryotic cell, meaning that it possesses a membrane-bound nucleus. Learn about the structures and organelles that can be found in typical plant cells.
2016-09-28T11:13:39ZTake a journey into the cell to find out about the cell structure and classification of both prokaryotic cells and eukaryotic cells.
2016-09-28T11:13:39ZThe body contains trillions of cells that come in varying shapes and sizes. Explore some of the different types of cells in the body.
2016-09-28T11:13:39ZThe Cell Theory is one of the basic principles of biology. It states that all living things are composed of cells and cells are the basic units of life.
2016-09-28T11:13:39ZProteins are very important molecules in our cells. They are constructed from amino acids and each protein within the body has a specific function.
2016-09-28T11:13:39ZRibosomes are cell organelles that consist of RNA and proteins. They are responsible for assembling the proteins of a cell.
2016-09-28T11:13:39ZNucleic acids are organic molecules that allow organisms to transfer genetic information from one generation to the next. DNA and RNA are the two types of nucleic acids.
2016-09-28T11:13:39ZThe following 10 facts about cells will provide you with well known and perhaps little known tidbits of information about cells.
2016-09-28T11:13:39ZThis resource provides information on brain anatomy, brain divisions, cranial nerves, the central nervous system, and brain function.
2016-09-28T11:13:39ZMost people have applied the 5-second rule when eating foods they have dropped on the floor. Is there any truth to this rule or is it a myth?
2016-09-28T11:13:39ZAdipose tissue is a type of connective tissue composed of fat storing cells that harvest and utilize the energy in fats. White adipose tissue stores energy and helps to insulate the body, while brown adipose and beige adipose burn energy and generate heat.
2016-09-28T11:13:39ZBiological evolution is any genetic change in a population inherited over several generations. These changes may be obvious or not very noticeable at all.
2016-09-28T11:13:39ZIn glycolysis, glucose is split into two molecules of a three-carbon sugar.
2016-09-28T11:13:39ZThe cardiac cycle describes the cycle of events that occur when the heart beats. It consists of a diastole phase and a systole phase.
2016-09-28T11:13:39ZCellular respiration is a process by which cells harvest the energy stored in food. It includes glycolysis, the citric acid cycle, and electron transport.
2016-09-28T11:13:39ZConnective tissue supports and binds other tissues of the body. Examples of connective tissue include adipose, cartilage, bone, tendons, and blood.
2016-09-28T11:13:39ZSpecialized plant cells include parenchyma cells, collenchyma cells and sclerenchyma cells. Some cells store nutrients, while others support the plant.
2016-09-28T11:13:39ZThe amygdala is a brain structure responsible for autonomic responses associated with fear and fear conditioning. It processes many of our emotions.
2016-09-28T11:13:39ZThe human body is made up of several organ systems that work together as one unit. These systems are important for proper organism function.
2016-09-28T11:13:39ZThe peripheral nervous system relays signals between the central nervous system and the other parts of the body through sensory and motor neurons.
2016-09-28T11:13:39ZProkaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. Prokaryotes include bacteria and archaeans.
2016-09-28T11:13:39ZThis stage-by-stage guide to the phases of meiosis provides details about the events that occur in each of the stages of meiosis I and meiosis II.
2016-09-28T11:13:39ZThe limbic system is comprised of brain structures that are involved in our emotions. Structures of this system include the amygdala, hippocampus, hypothalamus, and thalamus.
2016-09-28T11:13:39ZRed blood cells are blood components that transport oxygen throughout the body. These cells contain millions of oxygen-binding hemoglobin molecules.
2016-09-28T11:13:39ZThe cell wall is the rigid, semi-permeable protective layer found in some cells.
2016-09-28T11:13:39ZLipids are diverse compounds that are insoluble in water. They store energy, protect against water loss, and form cell membranes.
2016-09-28T11:13:39ZThe cerebral cortex lobes include the parietal, frontal, occipital and temporal lobes. They are responsible for processing input from various sources.
2016-09-28T11:13:39ZDid you know that although polar bears look white, they actually have black skin? Discover several wondrous and fascinating facts about animals.
2016-09-28T11:13:39ZThe central nervous system (CNS) is responsible for processing information received from all parts of the body. The two main organs of the CNS are the brain and spinal cord.
2016-09-28T11:13:39ZProtein structure is determined by the sequence of amino acids that form a protein. The four protein structure levels are primary, secondary, tertiary, and quaternary structure.
2016-09-28T11:13:39ZIn asexual reproduction, one individual produces offspring that are genetically identical to itself. Common forms of asexual reproduction include budding, regeneration, and parthenogenesis.
2016-09-28T11:13:39ZAn allele is an alternative form of a gene. Organisms typically have two alleles for a single trait, one being inherited from each parent.
2016-09-28T11:13:39ZThe endoplasmic reticulum is a network of tubules and flattened sacs that produce and process lipids and proteins in plant and animal cells.
2016-09-28T11:13:39ZThe scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world.
2016-09-28T11:13:39ZLiving organisms are classified into one of six Kingdoms of life. They are placed into these categories based on common characteristics.
2016-09-28T11:13:39ZIf you are taking a biology course, you are going to write biology lab reports. Learn how to use a good lab report format to properly write a lab report.
2016-09-28T11:13:39ZThis guide to the phases of mitosis explores hows cells reproduce. In mitosis, chromosomes are duplicated and divided evenly between two cells.
2016-09-28T11:13:39ZDo you know what the cytoskeleton does? This cell biology glossary is a good resource for finding succinct, practical, and meaningful biology definitions for various cell biology terms.
2016-09-28T11:13:39ZMitochondria are the cell's power producers. They convert energy into forms that are usable by the cell.
2016-09-28T11:13:39ZWhat is biology? Simply put, it is the study of life. Discover the basic principles of biology and the characteristics of life.
2016-09-28T11:13:39ZA chloroplast is a chlorophyll containing organelle found in plant cells and some algae. They convert light energy into chemical energy by photosynthesis.
2016-09-28T11:13:39ZAnalogous to the body's internal organs, organelles are tiny cellular organs that are specialized to perform functions necessary for normal cellular operation. Examples of organelles include the nucleus, mitochondria, and ribosomes.
2016-09-28T11:13:39ZThe cerebral cortex is the outer covering of the cerebrum. It is the layer of the brain often referred to as gray matter.
2016-09-28T11:13:39ZThe brain is one of the largest and most important organs of the human body. It sends messages to and receives messages from all over the body.
2016-09-28T11:13:39ZThe cytoplasm is a clear substance that consists of all of the contents outside of the nucleus of a membrane bound cell.
2016-09-28T11:13:39ZMendel's Law of Segregation states that allele pairs separate during gamete formation, and randomly unite at fertilization.
2016-09-28T11:13:39ZThe Three Domain System is a system for classifying biological organisms. Under this system, organisms are classified into three domains and six kingdoms.
2016-09-28T11:13:39ZThe nucleus is a cell structure that contains hereditary information, or DNA, and controls cellular growth and reproduction.
2016-09-28T11:13:39ZBroca's area is one of the main areas of the cerebral cortex responsible for producing language. It controls motor functions involved with speech.
2016-09-28T11:13:39ZThe following project ideas using plants provide suggestions for topics that can be explored through experimentation.
2016-09-28T11:13:39ZMuscle tissue is the most abundant tissue type in most animals. The three types of muscle tissue in the body are cardiac, smooth, and skeletal muscle.
2016-09-28T11:13:39ZDefinition of the term incomplete dominance. Learn how incomplete dominance differs from co-dominance and how they are studied in snapdragon plants.
2016-09-28T11:13:39ZAnimal projects and studies are important for students to understanding various biological processes in animals and even humans. Here are some ideas.
2016-09-28T11:13:39ZThe pineal gland is a small gland of the endocrine system that produces the hormone melatonin. This gland controls sleep-wake cycles.
2016-09-28T11:13:39ZMendel's law of independent assortment states that allele pairs separate independently during the formation of gametes.
2016-09-28T11:13:39ZDefense mechanisms are very important to all animal life. They can give prey an advantage against hungry predators.
2016-09-28T11:13:39ZWhat is the relationship between chromosomes and sex? Sex is determined by the presence or absence of certain chromosomes.
2016-09-28T11:13:39ZThe corpus callosum is a thick band of nerve fibers that divides the cerebrum into left and right hemispheres.
2016-09-28T11:13:39ZPhospholipids belong to the lipid family of biological polymers. A phospholipid is composed of two fatty acids, a glycerol unit, a phosphate group and a polar molecule.
2016-09-28T11:13:39ZSexual reproduction is a process by which two individuals produce offspring with genetic traits from both parents. It involves the union of gametes.
2016-09-28T11:13:39ZPhotosynthesis is a process in which light energy is used to produce sugar and other organic compounds. Photosynthesis occurs in plant leaves.
2016-09-28T11:13:39ZDNA transcription is a process that involves the transcribing of genetic information from DNA to RNA. Genes are transcribed in order to produce proteins.
2016-09-28T11:13:39ZHere are some great ideas for biology science fair projects including projects related to animals, plants and the human body.
2016-09-28T11:13:39ZBlood is the life fluid of the body as it provides nourishment to the cells, tissues, and organs of the body. A component of the cardiovascular system, blood is circulated via the heart and blood vessels.
2016-09-28T11:13:39ZThe cell membrane is a thin semi-permeable membrane that surrounds the cytoplasm of a cell, enclosing its contents. It protects and supports the cell.
2016-09-28T11:13:39ZPhotosynthetic organisms are capable of generating organic compounds through photosynthesis. These organisms include plants, algae, and cyanobacteria.
2016-09-28T11:13:39ZBiology games and quizzes help you to test your knowledge of biology in a fun way. Discover how much you know about the human body, genetics, and more.
2016-09-28T11:13:39ZBiological polymers are large molecules composed of many smaller molecules linked together. Proteins and nucleic acids are two examples of polymers.
2016-09-28T11:13:39ZChromatin is a mass of genetic material composed of DNA and proteins that condenses to form chromosomes. Chromatin compresses DNA into a compact unit.
2016-09-28T11:13:39ZAnatomy is the study of the structure of living organisms on a large and small scale. The most important thing to understand when studying anatomy is the terminology.
2016-09-28T11:13:39ZA capillary is an extremely small blood vessel located within the body tissues. Gasses, nutrients, and fluids are exchanged through capillaries.
2016-09-28T11:13:39ZAlso called leukocytes, white blood cells play an important role in the immune system by protecting the body from infectious agents.
2016-09-28T11:13:39ZCells divide either through the process of mitosis or meiosis. Sex cells are produced through meiosis, while all other body cell types are produced through mitosis.
2016-09-28T11:13:39ZThe heart is the organ that helps supply blood and oxygen to all parts of the body. Heart anatomy focuses on the structure and function of the heart.
2016-09-28T11:13:39ZThe thalamus is a limbic system structure that is involved in sensory perception and relaying sensory information to the cerebral cortex.
2016-09-28T11:13:39ZAmino acids are the basic components of proteins. They are essential to life because the proteins they form are involved in virtually all cell functions.
2016-09-28T11:13:39ZThe brainstem is the region of the brain that connects the cerebrum with the spinal cord. It consists of the midbrain, medulla oblongata, and the pons.
2016-09-28T11:13:39ZThe temporal lobes, one of four cerebral cortex lobes, play an important role in organizing sensory input, auditory perception, and memory formation.
2016-09-28T11:13:39ZThe Golgi apparatus, also called the Golgi complex, is found in plant and animal cells. It processes and generates molecules for proper cell function.
2016-09-28T11:13:39ZFertilization involves the union of male and female sex cells, which results in the production of offspring with a mix of inherited genes.
2016-09-28T11:13:39ZDiffusion is the tendency of molecules to spread into an available space. The diffusion of substances across a membrane is called passive transport.
2016-09-28T11:13:39ZProtein synthesis is accomplished through a process called translation. In translation, RNA and ribosomes work together to produce proteins.
2016-09-28T11:13:39ZOrganisms from the Domain Archaea can exists under some of the most extreme conditions. They can survive in extremely hot, acidic, or alkaline environments.
2016-09-28T11:13:39ZThe circulatory system circulates blood by pulmonary and systemic circuits. These pathways transport blood between the heart and the rest of the body.
2016-09-28T11:13:39ZThis mitosis glossary is a good resource for finding succinct, practical, and meaningful biology definitions for common mitosis terms.
2016-09-28T11:13:39ZNervous tissue is the primary tissue of the central and peripheral nervous systems. Nervous tissue conducts nerve impulses and is composed of neurons.
2016-09-28T11:13:39ZThe integumentary system consists of the largest organ in the body, the skin. This organ protects the internal structures of the body from damage.
2016-09-28T11:13:39ZBiomes are identified by the vegetation and animals that populate them. The location of each biome is determined by the regional climate.
2016-09-28T11:13:39ZThe cerebellum is the area of the hindbrain that controls motor movement coordination, balance, equilibrium and muscle tone.
2016-09-28T11:13:39ZTemperate grasslands are savanna-like areas located in cold climate regions. Learn about the animals and plants in this biome.
2016-09-28T11:13:39ZSavannas are areas of open grassland with dispersed trees. Learn about the animals and vegetation of the savanna biome.
2016-09-28T11:13:39ZSex cells are reproductive cells. Male and female sex cells are dramatically different in size and shape. Female ova are large and round, while male sperm resemble long, motile projectiles.
2016-09-28T11:13:39ZBone marrow is the soft tissue found inside bones that functions mainly to produce red blood cells, white blood cells, and platelets.
2016-09-28T11:13:39ZThe diencephalon, along with the telencephalon comprise the two major divisions of forebrain. The thalamus is a major component of the diencephalon.
2016-09-28T11:13:39ZHow do normal cells differ from cancer cells? Learn about the properties of normal cells versus cancer cells.
2016-09-28T11:13:39ZThe parietal lobes are one of the four main divisions of each brain hemisphere. These lobes play a vital role in touch sensory information processing.