Published: Fri, 21 Oct 2016 11:11:49 +0000
2016-10-21T11:11:49ZAnimal cells are eukaryotic cells that contain various membrane-bound organelles.
2016-10-21T11:11:49ZThe 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.
2016-10-21T11:11:49ZThe cell nucleus is the command center of our cells. It contains our chromosomes and genetic information needed for the reproduction of life.
2016-10-21T11:11:49ZPlant and animal cells are similar in that both are eukaryotic cells. However, there are several important differences between these two cell types.
2016-10-21T11:11:49ZA 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.
2016-10-21T11:11:49ZThe body contains trillions of cells that come in varying shapes and sizes. Explore some of the different types of cells in the body.
2016-10-21T11:11:49ZTake a journey into the cell to find out about the cell structure and classification of both prokaryotic cells and eukaryotic cells.
2016-10-21T11:11:49ZIn glycolysis, glucose is split into two molecules of a three-carbon sugar.
2016-10-21T11:11:49ZThe 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.
2016-10-21T11:11:49ZThis 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.
2016-10-21T11:11:49ZCellular respiration is a process by which cells harvest the energy stored in food. It includes glycolysis, the citric acid cycle, and electron transport.
2016-10-21T11:11:49ZThis resource provides information on brain anatomy, brain divisions, cranial nerves, the central nervous system, and brain function.
2016-10-21T11:11:49ZProteins are very important molecules in our cells. They are constructed from amino acids and each protein within the body has a specific function.
2016-10-21T11:11:49ZThe cardiac cycle describes the cycle of events that occur when the heart beats. It consists of a diastole phase and a systole phase.
2016-10-21T11:11:49ZRibosomes are cell organelles that consist of RNA and proteins. They are responsible for assembling the proteins of a cell.
2016-10-21T11:11:49ZThe following 10 facts about cells will provide you with well known and perhaps little known tidbits of information about cells.
2016-10-21T11:11:49ZBiological evolution is any genetic change in a population inherited over several generations. These changes may be obvious or not very noticeable at all.
2016-10-21T11:11:49ZThe cell wall is the rigid, semi-permeable protective layer found in some cells.
2016-10-21T11:11:49ZAdipose 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.
2016-10-21T11:11:49ZThe amygdala is a brain structure responsible for autonomic responses associated with fear and fear conditioning. It processes many of our emotions.
2016-10-21T11:11:49ZThe peripheral nervous system relays signals between the central nervous system and the other parts of the body through sensory and motor neurons.
2016-10-21T11:11:49ZNucleic 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.
2016-10-21T11:11:49ZConnective tissue supports and binds other tissues of the body. Examples of connective tissue include adipose, cartilage, bone, tendons, and blood.
2016-10-21T11:11:49ZThe limbic system is comprised of brain structures that are involved in our emotions. Structures of this system include the amygdala, hippocampus, hypothalamus, and thalamus.
2016-10-21T11:11:49ZSpecialized plant cells include parenchyma cells, collenchyma cells and sclerenchyma cells. Some cells store nutrients, while others support the plant.
2016-10-21T11:11:49ZProkaryotes are single-celled organisms that are the earliest and most primitive forms of life on earth. Prokaryotes include bacteria and archaeans.
2016-10-21T11:11:49ZThe human body is made up of several organ systems that work together as one unit. These systems are important for proper organism function.
2016-10-21T11:11:49ZThis guide to the phases of mitosis explores hows cells reproduce. In mitosis, chromosomes are duplicated and divided evenly between two cells.
2016-10-21T11:11:49ZThe cerebral cortex lobes include the parietal, frontal, occipital and temporal lobes. They are responsible for processing input from various sources.
2016-10-21T11:11:49ZRed blood cells are blood components that transport oxygen throughout the body. These cells contain millions of oxygen-binding hemoglobin molecules.
2016-10-21T11:11:49ZAn allele is an alternative form of a gene. Organisms typically have two alleles for a single trait, one being inherited from each parent.
2016-10-21T11:11:49ZThe central nervous system is responsible for processing information received from all parts of the body. The main organs are the brain and spinal cord.
2016-10-21T11:11:49ZThe cerebral cortex is the outer covering of the cerebrum. It is the layer of the brain often referred to as gray matter.
2016-10-21T11:11:49ZMendel's Law of Segregation states that allele pairs separate during gamete formation, and randomly unite at fertilization.
2016-10-21T11:11:49ZCells 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.
2016-10-21T11:11:49ZDefinition of the term incomplete dominance. Learn how incomplete dominance differs from co-dominance and how they are studied in snapdragon plants.
2016-10-21T11:11:49ZSexual reproduction is a process by which two individuals produce offspring with genetic traits from both parents. It involves the union of gametes.
2016-10-21T11:11:49ZAnalogous 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.
2016-10-21T11:11:49ZAsexual reproduction involves producing progeny that are genetic clones of the parent. This can be done by regeneration, budding, and binary fission.
2016-10-21T11:11:49ZLipids are diverse compounds that are insoluble in water. They store energy, protect against water loss, and form cell membranes.
2016-10-21T11:11:49ZWhat is the relationship between chromosomes and sex? Sex is determined by the presence or absence of certain chromosomes.
2016-10-21T11:11:49ZMitochondria are the cell's power producers. They convert energy into forms that are usable by the cell.
2016-10-21T11:11:49ZDo 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.
2016-10-21T11:11:49ZThe endoplasmic reticulum is a network of tubules and flattened sacs that produce and process lipids and proteins in plant and animal cells.
2016-10-21T11:11:49ZA chloroplast is a chlorophyll containing organelle found in plant cells and some algae. They convert light energy into chemical energy by photosynthesis.
2016-10-21T11:11:49ZBroca's area is one of the main areas of the cerebral cortex responsible for producing language. It controls motor functions involved with speech.
2016-10-21T11:11:49ZDNA transcription is a process that involves the transcribing of genetic information from DNA to RNA. Genes are transcribed in order to produce proteins.
2016-10-21T11:11:49ZPhotosynthesis is a process in which light energy is used to produce sugar and other organic compounds. Photosynthesis occurs in plant leaves.
2016-10-21T11:11:49ZThe 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.
2016-10-21T11:11:49ZThe corpus callosum is a thick band of nerve fibers that divides the cerebrum into left and right hemispheres.
2016-10-21T11:11:49ZIf 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.
2016-10-21T11:11:49ZThe following project ideas using plants provide suggestions for topics that can be explored through experimentation.
2016-10-21T11:11:49ZMuscle 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.
2016-10-21T11:11:49ZProtein structure is determined by amino acids sequences. The four protein structure types are primary, secondary, tertiary, and quaternary structure.
2016-10-21T11:11:49ZThe pineal gland is a small gland of the endocrine system that produces the hormone melatonin. This gland controls sleep-wake cycles.
2016-10-21T11:11:49ZWhat is biology? Simply put, it is the study of life. Discover the basic principles of biology and the characteristics of life.
2016-10-21T11:11:49ZThe 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.
2016-10-21T11:11:49ZThe nucleus is a cell structure that contains hereditary information, or DNA, and controls cellular growth and reproduction.
2016-10-21T11:11:49ZFertilization involves the union of male and female sex cells, which results in the production of offspring with a mix of inherited genes.
2016-10-21T11:11:49ZA capillary is an extremely small blood vessel located within the body tissues. Gasses, nutrients, and fluids are exchanged through capillaries.
2016-10-21T11:11:49ZThe cell membrane is a thin semi-permeable membrane that surrounds the cytoplasm of a cell, enclosing its contents. It protects and supports the cell.
2016-10-21T11:11:49ZThe cytoplasm is a clear substance that consists of all of the contents outside of the nucleus of a membrane bound cell.
2016-10-21T11:11:49ZMendel's law of independent assortment states that allele pairs separate independently during the formation of gametes.
2016-10-21T11:11:49ZTemperate grasslands are savanna-like areas located in cold climate regions. Learn about the animals and plants in this biome.
2016-10-21T11:11:49ZLiving organisms are classified into one of six Kingdoms of life. They are placed into these categories based on common characteristics.
2016-10-21T11:11:49ZBlood 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.
2016-10-21T11:11:49ZA chromosome mutation causes changes in the structure or number of chromosomes in a cell. These mutations are often caused by errors that occur during the process of cell division or by mutagens.
2016-10-21T11:11:49ZWashing and drying your hands properly is a simple and effective way to remove bacteria and other dangerous germs and to prevent the spread of disease.
2016-10-21T11:11:49ZChromatin is a mass of genetic material composed of DNA and proteins that condenses to form chromosomes. Chromatin compresses DNA into a compact unit.
2016-10-21T11:11:49ZHomologous chromosomes are chromosome pairs that are inherited from each parent. They are similar in gene position but may contain different alleles.
2016-10-21T11:11:49ZThe layers of the heart wall consist of the outer epicardium, the middle myocardium, and the inner endocardium. Cardiac muscle powers heart contractions.
2016-10-21T11:11:49ZStem cells are unique cells of the body in that they are unspecialized and have the ability to develop into several different types of cells.
2016-10-21T11:11:49ZThis mitosis glossary is a good resource for finding succinct, practical, and meaningful biology definitions for common mitosis terms.
2016-10-21T11:11:49ZAnimal projects and studies are important for students to understand various biological processes in animals and even humans. Try some of these ideas.
2016-10-21T11:11:49ZThe circulatory system circulates blood by pulmonary and systemic circuits. These pathways transport blood between the heart and the rest of the body.
2016-10-21T11:11:49ZHow do normal cells differ from cancer cells? Learn about the properties of normal cells versus cancer cells.
2016-10-21T11:11:49ZAlso called leukocytes, white blood cells play an important role in the immune system by protecting the body from infectious agents.
2016-10-21T11:11:49ZNervous tissue is the primary tissue of the central and peripheral nervous systems. Nervous tissue conducts nerve impulses and is composed of neurons.
2016-10-21T11:11:49ZThe scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world.
2016-10-21T11:11:49ZThe 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.
2016-10-21T11:11:49ZPhotosynthetic organisms are capable of generating organic compounds through photosynthesis. These organisms include plants, algae, and cyanobacteria.
2016-10-21T11:11:49ZPhospholipids 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.
2016-10-21T11:11:49ZSavannas are areas of open grassland with dispersed trees. Learn about the animals and vegetation of the savanna biome.
2016-10-21T11:11:49ZThe Three Domain System is a system for classifying biological organisms. Under this system, organisms are classified into three domains and six kingdoms.
2016-10-21T11:11:49ZBone marrow is the soft tissue found inside bones that functions mainly to produce red blood cells, white blood cells, and platelets.
2016-10-21T11:11:49ZThe cerebellum is the area of the hindbrain that controls motor movement coordination, balance, equilibrium and muscle tone.
2016-10-21T11:11:49ZProtein synthesis is accomplished through a process called translation. In translation, RNA and ribosomes work together to produce proteins.
2016-10-21T11:11:49ZHere are some great ideas for biology science fair projects including projects related to animals, plants and the human body.
2016-10-21T11:11:49ZThe temporal lobes, one of four cerebral cortex lobes, play an important role in organizing sensory input, auditory perception, and memory formation.
2016-10-21T11:11:49ZMendel's law of independent assortment states that allele pairs separate independently during the formation of gametes. Therefore, traits are transmitted to offspring independently of one another.
2016-10-21T11:11:49ZThe thymus is a small glandular structure that regulates the immune system through the production of specific immune cells called lymphocytes.
2016-10-21T11:11:49ZThe cardiovascular system transports nutrients and removes gaseous waste from the body. Components include the heart, blood vessels, and blood.
2016-10-21T11:11:49ZThe diencephalon, along with the telencephalon comprise the two major divisions of forebrain. The thalamus is a major component of the diencephalon.
2016-10-21T11:11:49ZDNA replication is the process of copying the DNA within our cells. This process involves RNA and several enzymes, including DNA polymerase and primase.
2016-10-21T11:11:49ZThe thalamus is a limbic system structure that is involved in sensory perception and relaying sensory information to the cerebral cortex.
2016-10-21T11:11:49ZBiological polymers are large molecules composed of many smaller molecules linked together. Proteins and nucleic acids are two examples of polymers.
2016-10-21T11:11:49ZAnatomy 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.
2016-10-21T11:11:49ZThe parietal lobes are one of the four main divisions of each brain hemisphere. These lobes play a vital role in touch sensory information processing.
2016-10-21T11:11:49ZBiomes are identified by the vegetation and animals that populate them. The location of each biome is determined by the regional climate.
2016-10-21T11:11:49ZGametes are reproductive cells that unite at fertilization to form a new cell called a zygote. Gametes are haploid cells formed by meiosis.