The Basic Unit of Life
... in chemical bonds between atoms of carbon, hydrogen, and oxygen. An atom is the smallest particle of an element that still has the properties of that element. Chemical bonds hold the atoms of carbon, hydrogen, and oxygen together to form molecules of sugar. A molecule is two or more atoms joined tog ...
... in chemical bonds between atoms of carbon, hydrogen, and oxygen. An atom is the smallest particle of an element that still has the properties of that element. Chemical bonds hold the atoms of carbon, hydrogen, and oxygen together to form molecules of sugar. A molecule is two or more atoms joined tog ...
glossary - McGraw Hill Higher Education
... adenosine triphosphate (ATP); it can move substances against a concentration gradient. acute phase protein A primitive recognition system, present normally in serum but increasing upon infection up to several hundred-fold; they decrease the invasive ability of pathogens and increase phagocytosis. ad ...
... adenosine triphosphate (ATP); it can move substances against a concentration gradient. acute phase protein A primitive recognition system, present normally in serum but increasing upon infection up to several hundred-fold; they decrease the invasive ability of pathogens and increase phagocytosis. ad ...
The Science of Candy!
... Carefully place a few drops of water on the flat surface. Add some candy and allow the color to dissolve. You may test as many colors as you like, but be sure to only use one color of candy in each water puddle. Dip the edge of the coffee filter (or paper towel or napkin) into the colored wa ...
... Carefully place a few drops of water on the flat surface. Add some candy and allow the color to dissolve. You may test as many colors as you like, but be sure to only use one color of candy in each water puddle. Dip the edge of the coffee filter (or paper towel or napkin) into the colored wa ...
Body fluids
... diffuse. This is why sugar diffuses more quickly through hot tea than through iced tea. (f) Membrane permeability. Diffusion through a membrane depends on how permeable it is to the particles. Cells can adjust their permeability to such a substance by adding channel proteins to the membrane or takin ...
... diffuse. This is why sugar diffuses more quickly through hot tea than through iced tea. (f) Membrane permeability. Diffusion through a membrane depends on how permeable it is to the particles. Cells can adjust their permeability to such a substance by adding channel proteins to the membrane or takin ...
Revised NEW Item Specifications October 2007 Biology
... Look at the list of organism characteristics below. Which two statements correctly differentiate Archaebacteria from other bacteria? ...
... Look at the list of organism characteristics below. Which two statements correctly differentiate Archaebacteria from other bacteria? ...
Unit Four : Classification of Living Organisms
... For example, at the time you read these words, the nerve cells in your eyes carry messages of what you read to the brain cells and the muscular cells connected to your eyeballs move your eyes across the page. Cells are collected together to form tissues such as the nerve tissue or muscular tissue. I ...
... For example, at the time you read these words, the nerve cells in your eyes carry messages of what you read to the brain cells and the muscular cells connected to your eyeballs move your eyes across the page. Cells are collected together to form tissues such as the nerve tissue or muscular tissue. I ...
3 | biological macromolecules
... smaller organic molecules. There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids); each is an important cell component and performs a wide array of functions. Combined, these molecules make up the majority of a cell’s dry mass (recall that wate ...
... smaller organic molecules. There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids); each is an important cell component and performs a wide array of functions. Combined, these molecules make up the majority of a cell’s dry mass (recall that wate ...
COMPLETE BIOLOGY Table of contents I. Chemistry II. Cells III
... that these can be voltage-gated (respond to difference in membrane potential), ligand-gated (chemical binds and opens channel), or mechanically-gated (respond to pressure, vibration, temperature, etc). **- Porins: allow passage of certain ions + small polar molecules. Aquaporins increase rate of H2O ...
... that these can be voltage-gated (respond to difference in membrane potential), ligand-gated (chemical binds and opens channel), or mechanically-gated (respond to pressure, vibration, temperature, etc). **- Porins: allow passage of certain ions + small polar molecules. Aquaporins increase rate of H2O ...
XVIII. Biology, High School - Massachusetts Department of
... indicated that the animal not only had scales, fins, and gills, but also had lungs, a full set of ribs, and limb bones arranged to support the animal’s weight. The illustration below shows what the animal, called Tiktaalik, probably looked like based on the fossil evidence. ...
... indicated that the animal not only had scales, fins, and gills, but also had lungs, a full set of ribs, and limb bones arranged to support the animal’s weight. The illustration below shows what the animal, called Tiktaalik, probably looked like based on the fossil evidence. ...
Revised NEW Item Specifications October 2007 Biology
... Look at the list of organism characteristics below. Which two statements correctly differentiate Archaebacteria from other bacteria? ...
... Look at the list of organism characteristics below. Which two statements correctly differentiate Archaebacteria from other bacteria? ...
Cell Compounds
... Describe how the polarity of the water molecule results in hydrogen bonding Covalent bonds form when atoms share electrons. Remember that electrons move very fast and thus can be shared, effectively filling or emptying the outer shells of the atoms involved in the bond. Such bonds are referred to a ...
... Describe how the polarity of the water molecule results in hydrogen bonding Covalent bonds form when atoms share electrons. Remember that electrons move very fast and thus can be shared, effectively filling or emptying the outer shells of the atoms involved in the bond. Such bonds are referred to a ...
FUNGI
... 5. Mark an “X” in the boxes that correspond to characteristics found within each group. Color in those boxes that do not apply. Characteristic Fungi Plants Animals Characteristic Fungi Plants Animals Cell Division Cell Walls of cellulose nuclear membrane breaks down of chitin nuclear membrane does n ...
... 5. Mark an “X” in the boxes that correspond to characteristics found within each group. Color in those boxes that do not apply. Characteristic Fungi Plants Animals Characteristic Fungi Plants Animals Cell Division Cell Walls of cellulose nuclear membrane breaks down of chitin nuclear membrane does n ...
Biology Cytology (study of the cells) Basic characteristics of the cells
... salts, pigments, metabolic waste and compounds that are noxious to herbivores as a means of defense. - Lysosomes: contains enzymes that break down ingested materials; break down damaged or unneeded organelles and proteins. Perform phagocytosis. - Peroxisomes: contain the enzyme catalase which splits ...
... salts, pigments, metabolic waste and compounds that are noxious to herbivores as a means of defense. - Lysosomes: contains enzymes that break down ingested materials; break down damaged or unneeded organelles and proteins. Perform phagocytosis. - Peroxisomes: contain the enzyme catalase which splits ...
File
... cytoplasm. The cell membrane is a phospholipid bilayer (with the consistency of light oil) in which proteins are embedded. [In addition to a cell membrane all plant cells have a primary cell wall and some have a secondary cell wall that forms inside the first. The cell wall lends support to the plan ...
... cytoplasm. The cell membrane is a phospholipid bilayer (with the consistency of light oil) in which proteins are embedded. [In addition to a cell membrane all plant cells have a primary cell wall and some have a secondary cell wall that forms inside the first. The cell wall lends support to the plan ...
1 Properties of Matter
... primary functions of the four major categories of organic molecules (carbohydrates, lipids, proteins, and nucleic acids). 1.3 Explain the role of enzymes as catalysts that lower the activation energy of biochemical reactions. Identify factors, such as pH and temperature, which have an effect on enzy ...
... primary functions of the four major categories of organic molecules (carbohydrates, lipids, proteins, and nucleic acids). 1.3 Explain the role of enzymes as catalysts that lower the activation energy of biochemical reactions. Identify factors, such as pH and temperature, which have an effect on enzy ...
Cell Division – Revision Pack (B3)
... Liver and muscle cells have large numbers of mitochondria due to large amounts of respiration taking place. Some structures in cells, such as ribosomes, are too small to be seen with the light microscope. Ribosomes are in the cytoplasm and are the site of protein synthesis. DNA Structure and Genetic ...
... Liver and muscle cells have large numbers of mitochondria due to large amounts of respiration taking place. Some structures in cells, such as ribosomes, are too small to be seen with the light microscope. Ribosomes are in the cytoplasm and are the site of protein synthesis. DNA Structure and Genetic ...
Biology IGCSE FALL 2011_2012 - Biology
... Transport Practice 13 instructional days II.6. 1 Nutrients Review nutrition definition List the chemical elements that make up: ● carbohydrates ● fats ● proteins Chemicals of Life October 1-18, 2013 Describe the synthesis of large molecules from smaller basic units ● simple sugars to starch and gly ...
... Transport Practice 13 instructional days II.6. 1 Nutrients Review nutrition definition List the chemical elements that make up: ● carbohydrates ● fats ● proteins Chemicals of Life October 1-18, 2013 Describe the synthesis of large molecules from smaller basic units ● simple sugars to starch and gly ...
Question paper - Paper 1F - November 2010
... Instructions to Candidates In the boxes above, write your centre number, candidate number, your surname, initial(s) and signature. The paper reference is shown above. Check that you have the correct question paper. Answer ALL the questions in the spaces provided in this question paper. Do not use pe ...
... Instructions to Candidates In the boxes above, write your centre number, candidate number, your surname, initial(s) and signature. The paper reference is shown above. Check that you have the correct question paper. Answer ALL the questions in the spaces provided in this question paper. Do not use pe ...
Worksheet 1: Foundations—crossword
... Worksheet 5: Cell at work—enzymes and energy Correct order of terms listed under subheadings: Enzymes: catalysts, protein, specific, active site, optimum, denatured, pH, coenzymes Acquiring energy: ATP, phosphate, glycolysis, aerobic, cellular respiration, fermentation, lactic acid, carbon ...
... Worksheet 5: Cell at work—enzymes and energy Correct order of terms listed under subheadings: Enzymes: catalysts, protein, specific, active site, optimum, denatured, pH, coenzymes Acquiring energy: ATP, phosphate, glycolysis, aerobic, cellular respiration, fermentation, lactic acid, carbon ...
File - Mizzou Pre
... - Nucleoid: irregular shaped region within the cell of prokaryote that contains all/most generic material - Cytoplasm: this is an area, not a structure! metabolic activity and transport occur here. Cyclosis is streaming movement within cell. Doesn’t include nucleus, but does included cytosol, organe ...
... - Nucleoid: irregular shaped region within the cell of prokaryote that contains all/most generic material - Cytoplasm: this is an area, not a structure! metabolic activity and transport occur here. Cyclosis is streaming movement within cell. Doesn’t include nucleus, but does included cytosol, organe ...
Cells and Kingdoms
... How are cells organized? For unicellular organisms, organization is simple. The organism has only one cell that performs all life functions. Multicellular organisms are more specialized. Your own body contains many different cell types that have specific functions. Muscle cells, for example, specia ...
... How are cells organized? For unicellular organisms, organization is simple. The organism has only one cell that performs all life functions. Multicellular organisms are more specialized. Your own body contains many different cell types that have specific functions. Muscle cells, for example, specia ...
XVIII. Biology, High School - Massachusetts Department of
... C. The villi of the small intestine increase the absorption of nutrients from the small intestine into the blood. D. More growth hormone is released from the pituitary gland when the level of growth hormone in the blood falls too low. ...
... C. The villi of the small intestine increase the absorption of nutrients from the small intestine into the blood. D. More growth hormone is released from the pituitary gland when the level of growth hormone in the blood falls too low. ...
Content Limit
... Living Organisms SC.6.L.14.1 Describe and identify patterns in the hierarchical organization of organisms from atoms to molecules and cells to tissues to organs to organ systems to organisms. SC.6.L.14.2 Investigate and explain the components of the scientific theory of cells (cell theory): all ...
... Living Organisms SC.6.L.14.1 Describe and identify patterns in the hierarchical organization of organisms from atoms to molecules and cells to tissues to organs to organ systems to organisms. SC.6.L.14.2 Investigate and explain the components of the scientific theory of cells (cell theory): all ...
Study Material - Class- XI - Biology
... -Organism viz. Planaria reproduce by regeneration in which a fragment of body forms whole organism. -Fungi, filamentous algae, protonema of moss reproduce by fragmentation also. -In unicellular organisms growth & reproduction are synonymous. - Certain organisms do not reproduce viz. mule,worker bees ...
... -Organism viz. Planaria reproduce by regeneration in which a fragment of body forms whole organism. -Fungi, filamentous algae, protonema of moss reproduce by fragmentation also. -In unicellular organisms growth & reproduction are synonymous. - Certain organisms do not reproduce viz. mule,worker bees ...
Study Material - Class- XI- Biology
... -Organism viz. Planaria reproduce by regeneration in which a fragment of body forms whole organism. -Fungi, filamentous algae, protonema of moss reproduce by fragmentation also. -In unicellular organisms growth & reproduction are synonymous. - Certain organisms do not reproduce viz. mule,worker bees ...
... -Organism viz. Planaria reproduce by regeneration in which a fragment of body forms whole organism. -Fungi, filamentous algae, protonema of moss reproduce by fragmentation also. -In unicellular organisms growth & reproduction are synonymous. - Certain organisms do not reproduce viz. mule,worker bees ...
Cell (biology)
The cell (from Latin cella, meaning ""small room"") is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the ""building blocks of life"". The study of cells is called cell biology.Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals). While the number of cells in plants and animals varies from species to species, humans contain more than 10 trillion (1013) cells. Most plant and animal cells are visible only under the microscope, with dimensions between 1 and 100 micrometres.The cell was discovered by Robert Hooke in 1665, who named the biological unit for its resemblance to cells inhabited by Christian monks in a monastery. Cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, that all cells come from preexisting cells, and that all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells. Cells emerged on Earth at least 3.5 billion years ago.