Systems of Gas Exchange
... The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon dioxide, a cell waste product. The main structures of the human respiratory system are the nasal cavity, the trachea, and lungs. All aerobic organisms require oxygen to carry out ...
... The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon dioxide, a cell waste product. The main structures of the human respiratory system are the nasal cavity, the trachea, and lungs. All aerobic organisms require oxygen to carry out ...
11. fossils and creation - Sciences and Scriptures
... The sediments deposited by the Flood were not all mixed up as some might surmise for a world-wide Flood. They were deposited gradually over weeks or months. Sediments are heavier than water and not easily mixed up. Even during present major catastrophic floods the sedimentary layers are laid down us ...
... The sediments deposited by the Flood were not all mixed up as some might surmise for a world-wide Flood. They were deposited gradually over weeks or months. Sediments are heavier than water and not easily mixed up. Even during present major catastrophic floods the sedimentary layers are laid down us ...
Systems of Gas Exchange
... split and spread through the lung. Like the trachea, the bronchi are made of cartilage and smooth muscle. At the bronchioles, the cartilage is replaced with elastic bers. Bronchi are innervated by nerves of both the parasympathetic and sympathetic nervous systems that control muscle contraction (pa ...
... split and spread through the lung. Like the trachea, the bronchi are made of cartilage and smooth muscle. At the bronchioles, the cartilage is replaced with elastic bers. Bronchi are innervated by nerves of both the parasympathetic and sympathetic nervous systems that control muscle contraction (pa ...
KCSE ONLINE REVISION BIOLOGY NOTES FORM 3 This
... organisms compete with one another for food, light, water, mates and shelter organisms must live together for competition for available resources those which cannot cope either structurally or behaviorally will migrate or die those remaining, due to better adaptations will increase in popula ...
... organisms compete with one another for food, light, water, mates and shelter organisms must live together for competition for available resources those which cannot cope either structurally or behaviorally will migrate or die those remaining, due to better adaptations will increase in popula ...
Biology Form 3
... • organisms compete with one another for food, light, water, mates and shelter • organisms must live together for competition for available resources • those which cannot cope either structurally or behaviorally will migrate or die • those remaining, due to better adaptations will increase in popula ...
... • organisms compete with one another for food, light, water, mates and shelter • organisms must live together for competition for available resources • those which cannot cope either structurally or behaviorally will migrate or die • those remaining, due to better adaptations will increase in popula ...
Evolution-Fitness and Rocks
... Comparative Anatomy - Homologous (similar) structures must have evolved from the same ancestral structure . . . Except when we don’t think two organisms shared a common ancestor with that structure. Molecular Biology - More or less the same idea as comparative anatomy - Similar genetic information i ...
... Comparative Anatomy - Homologous (similar) structures must have evolved from the same ancestral structure . . . Except when we don’t think two organisms shared a common ancestor with that structure. Molecular Biology - More or less the same idea as comparative anatomy - Similar genetic information i ...
LFS_208_Applied_Biology,_Nugent,_Gr._10,_13_pgs
... 3.1.10.A3: Compare and contrast the life cycles of single celled organisms, multi-celled organisms and viruses. Unit Essential Question(s): How do the life cycles of single-celled organisms, multi-celled organisms, and viruses compare? Concept: ...
... 3.1.10.A3: Compare and contrast the life cycles of single celled organisms, multi-celled organisms and viruses. Unit Essential Question(s): How do the life cycles of single-celled organisms, multi-celled organisms, and viruses compare? Concept: ...
The Basic Unit of Life
... + Nerve cells: send and receive messages + Blood cells: transport materials and fight diseases Some living things, such as bacteria, are made of only one cell. Bacteria are the simplest single cells that carry out all basic life activities. Observing Cfells Cells come in different sizes. However, mo ...
... + Nerve cells: send and receive messages + Blood cells: transport materials and fight diseases Some living things, such as bacteria, are made of only one cell. Bacteria are the simplest single cells that carry out all basic life activities. Observing Cfells Cells come in different sizes. However, mo ...
P. Arthropoda
... None of the following are unique to animals, but together distinguish animals from other organisms: Multicellular Heterotrophic No cell walls ...
... None of the following are unique to animals, but together distinguish animals from other organisms: Multicellular Heterotrophic No cell walls ...
Cancer across the tree of life: cooperation and cheating in
... Cells require resources to survive and perform their functions. Larger multicellular aggregations require systems of resource transport because cells on the interior cannot meet their oxygen and nutrient requirements through diffusion alone [7,40]. Indeed, transfer of resources from high- to low-res ...
... Cells require resources to survive and perform their functions. Larger multicellular aggregations require systems of resource transport because cells on the interior cannot meet their oxygen and nutrient requirements through diffusion alone [7,40]. Indeed, transfer of resources from high- to low-res ...
File - Science with Snyder
... 1. Structures that have a similar embryological origin and structure but are adapted for different purposes, such as a bat wing and a human arm, are called _____. a. embryological structures b. analogous structures c. homologous structures d. homozygous structures 2. What is the movement of genes in ...
... 1. Structures that have a similar embryological origin and structure but are adapted for different purposes, such as a bat wing and a human arm, are called _____. a. embryological structures b. analogous structures c. homologous structures d. homozygous structures 2. What is the movement of genes in ...
Reproductive Organs
... Apopyle Outlet from a flagellated chamber to an excurrent canal in leuconoid sponges. Aposematic Warning coloration typical of toxic, noxious, or otherwise dangerous species. Arborescent Branching in a tree- or bushlike pattern. Archenteron The embryonic gut formed during gastrulation. Architomy For ...
... Apopyle Outlet from a flagellated chamber to an excurrent canal in leuconoid sponges. Aposematic Warning coloration typical of toxic, noxious, or otherwise dangerous species. Arborescent Branching in a tree- or bushlike pattern. Archenteron The embryonic gut formed during gastrulation. Architomy For ...
Phylum Cnidaria
... • Cnidarians (phylum Cnidaria) are multicellular animals with tissues that perform specific functions • Cnidarians include the sea anemones, jellyfish, coral, and their relatives • Cnidarians have radial symmetry; in fact radial symmetry evolved in the Cnidarians! ...
... • Cnidarians (phylum Cnidaria) are multicellular animals with tissues that perform specific functions • Cnidarians include the sea anemones, jellyfish, coral, and their relatives • Cnidarians have radial symmetry; in fact radial symmetry evolved in the Cnidarians! ...
18.1 Sponges, Cnidarians, Flatworms
... Roundworms may be free-living or parasitic. Free-living worms are found mainly in freshwater habitats. Some live in soil. They generally feed on bacteria, fungi, protozoans, or decaying organic matter. By breaking down organic matter, they play an important role in the carbon cycle. Parasitic roundw ...
... Roundworms may be free-living or parasitic. Free-living worms are found mainly in freshwater habitats. Some live in soil. They generally feed on bacteria, fungi, protozoans, or decaying organic matter. By breaking down organic matter, they play an important role in the carbon cycle. Parasitic roundw ...
Taxonomy - Brief facts
... through which the internal organs are visible. Ciona intestinalis prefers habitats with low wave exposure and some water flow. It grows not only on bedrock and boulders but also on artificial surfaces such as metal and concrete. Other organisms, such as algae, are also used as substrata. C. intestin ...
... through which the internal organs are visible. Ciona intestinalis prefers habitats with low wave exposure and some water flow. It grows not only on bedrock and boulders but also on artificial surfaces such as metal and concrete. Other organisms, such as algae, are also used as substrata. C. intestin ...
Porifera Cnidaria Platyhelminthes Nematoda Annelida Mollusca
... b. Cell that uses flagella to move water through the sponge ...
... b. Cell that uses flagella to move water through the sponge ...
Collagen and Collagenous Tissues
... • Collagen is a ubiquitous structural protein with many types all having a triple helix structure that is cross-linked in a staggered array. • Some of the most common collagen types are fibrillar and the collagen can be organized in 1-D, 2-D or 3-D in different tissues to confer different material p ...
... • Collagen is a ubiquitous structural protein with many types all having a triple helix structure that is cross-linked in a staggered array. • Some of the most common collagen types are fibrillar and the collagen can be organized in 1-D, 2-D or 3-D in different tissues to confer different material p ...
Reproductive Organs
... Apopyle Outlet from a flagellated chamber to an excurrent canal in leuconoid sponges. Aposematic Warning coloration typical of toxic, noxious, or otherwise dangerous species. Arborescent Branching in a tree- or bushlike pattern. Archenteron The embryonic gut formed during gastrulation. Architomy For ...
... Apopyle Outlet from a flagellated chamber to an excurrent canal in leuconoid sponges. Aposematic Warning coloration typical of toxic, noxious, or otherwise dangerous species. Arborescent Branching in a tree- or bushlike pattern. Archenteron The embryonic gut formed during gastrulation. Architomy For ...
Unit 17.2: Overview of Invertebrates
... individuals. Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. The zygote develops into an embryo and eventually into a new adult organism. On the way, it may pass through one or more larval stages. A larva (plural, larvae) is a juvenile, or immature, stage of an animal. It ...
... individuals. Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. The zygote develops into an embryo and eventually into a new adult organism. On the way, it may pass through one or more larval stages. A larva (plural, larvae) is a juvenile, or immature, stage of an animal. It ...
Collagen and Collagenous Tissues
... • Strain gradually increases with time but reaches an equilibrium for a step load Strain-Rate Effects • increased strain rate results in increased stiffness due to viscous forces • These effects are small in ligaments and tendons for the normal range of strain rates, but can be important in relation ...
... • Strain gradually increases with time but reaches an equilibrium for a step load Strain-Rate Effects • increased strain rate results in increased stiffness due to viscous forces • These effects are small in ligaments and tendons for the normal range of strain rates, but can be important in relation ...
Collagen and Collagenous Tissues Collagen
... Blood Vessels: Structure • Typically Blood vessels have more type III collagen (which is more compliant) • Also have a lot of elastin • collagen fiber diameter ~50nm ...
... Blood Vessels: Structure • Typically Blood vessels have more type III collagen (which is more compliant) • Also have a lot of elastin • collagen fiber diameter ~50nm ...
Biology lecture # 1 Levels of Life (From Atom to Biosphere)
... proteins and carbohydrates. Lipid bilayer provides it with fluidity, flexibility and transport of lipid like substances. Proteins are integrated inside the membrane or present on its peripheries called integrated proteins and peripheral proteins, respectively. Some proteins are transmembrane, i.e., ...
... proteins and carbohydrates. Lipid bilayer provides it with fluidity, flexibility and transport of lipid like substances. Proteins are integrated inside the membrane or present on its peripheries called integrated proteins and peripheral proteins, respectively. Some proteins are transmembrane, i.e., ...
SCIENCE - Troup County School System
... robins fly. The next step would be to find some common characteristic that at least two of those flying animals share. This step is repeated until the dichotomous key leads to clearly identifying a species by separating it from the others based on traits. Dichotomous keys are often revised as they a ...
... robins fly. The next step would be to find some common characteristic that at least two of those flying animals share. This step is repeated until the dichotomous key leads to clearly identifying a species by separating it from the others based on traits. Dichotomous keys are often revised as they a ...
Precambrian body plans
Until the late 1950’s, the Precambrian era was not believed to have hosted multicellular organisms. However, with radiometric dating techniques, it has been found that fossils initially found in the Ediacara Hills in Southern Australia date back to the late Precambrian era. These fossils are body impressions of organisms shaped like disks, fronds and some with ribbon patterns that were most likely tentacles.These are the earliest multicellular organisms in Earth’s history, despite the fact that unicellularity had been around for a long time before that. The requirements for multicellularity were embedded in the genes of some of these cells, specifically choanoflagellates. These are thought to be the precursors for all multicellular organisms. They are highly related to sponges (Porifera), which are the simplest multicellular organisms.In order to understand the transition to multicellularity during the Precambrian, it is important to look at the requirements for multicellularity—both biological and environmental.