MODEL QUESTION PAPER I CLASS XI BIOLOGY (THEORY) Max
... Explain three classes of protozoa. Q18. Draw a labelled diagram of maize grain. Q19. Explain the three types of simple epithelium. Q20. How do neutral solutes move across the plasma membrane? Can polar molecules also move across it in the same way? If not, then how are these transported across the m ...
... Explain three classes of protozoa. Q18. Draw a labelled diagram of maize grain. Q19. Explain the three types of simple epithelium. Q20. How do neutral solutes move across the plasma membrane? Can polar molecules also move across it in the same way? If not, then how are these transported across the m ...
SCI 30 UA CH 1.5 TEXT - Fort Saskatchewan High
... successful medical operation often died due to infections that occurred during the operation. Most often, the infected wounds developed into gangrene or sepsis. Gangrene usually occurs in the extremities when cell tissues die because circulation has been lost in that area. A bacterial infection can ...
... successful medical operation often died due to infections that occurred during the operation. Most often, the infected wounds developed into gangrene or sepsis. Gangrene usually occurs in the extremities when cell tissues die because circulation has been lost in that area. A bacterial infection can ...
Background Information
... a. It is not a factor scientists use to define different species. b. It involves the joining of an egg and sperm into one cell. c. The offspring are genetically the same as their parents. d. Sexual reproduction can only take place by internal fertilization. 14. Jackson is growing a bean plant in a p ...
... a. It is not a factor scientists use to define different species. b. It involves the joining of an egg and sperm into one cell. c. The offspring are genetically the same as their parents. d. Sexual reproduction can only take place by internal fertilization. 14. Jackson is growing a bean plant in a p ...
www.XtremePapers.com
... Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. ...
... Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. ...
Frog 3324 Dissection Assessment sheet
... 6 Explain how the sexual reproductive system allows organisms to produce offspring that receive half of their genetic information from their mother and half from their father and that sexually produced offspring resemble, but are not identical to, either of their parents. Include in your answer, a b ...
... 6 Explain how the sexual reproductive system allows organisms to produce offspring that receive half of their genetic information from their mother and half from their father and that sexually produced offspring resemble, but are not identical to, either of their parents. Include in your answer, a b ...
Human Body Systems Cards
... Veins carry blood to the heart. Arteries carry blood away from the heart. White blood cells: large; several types; all have nuclei; defend body against disease Red blood cells: transport oxygen and some carbon dioxide; lack a nucleus; contain hemoglobin Platelets: cell fragments needed for blood clo ...
... Veins carry blood to the heart. Arteries carry blood away from the heart. White blood cells: large; several types; all have nuclei; defend body against disease Red blood cells: transport oxygen and some carbon dioxide; lack a nucleus; contain hemoglobin Platelets: cell fragments needed for blood clo ...
Respiration
... FORMULA MEANING: The body takes in O2 and food (glucose) to produce ATP (energy). The body then gives off CO2 and H2O as waste The RESPIRATORY SYSTEM must work with the CIRCULATORY SYSTEM so that the oxygen can be transported to cells and CO2 can be taken away from cells! ...
... FORMULA MEANING: The body takes in O2 and food (glucose) to produce ATP (energy). The body then gives off CO2 and H2O as waste The RESPIRATORY SYSTEM must work with the CIRCULATORY SYSTEM so that the oxygen can be transported to cells and CO2 can be taken away from cells! ...
Lecture2
... chorion also is important for dissolving mineral from the shell and making it available to the chick for forming bones The first 4 days are a time of dramatic change. Mistakes sometimes occur in this process. If it is a serious mistake, the defect is lethal and the embryo dies. In the incubation pro ...
... chorion also is important for dissolving mineral from the shell and making it available to the chick for forming bones The first 4 days are a time of dramatic change. Mistakes sometimes occur in this process. If it is a serious mistake, the defect is lethal and the embryo dies. In the incubation pro ...
Anatomy and Physiology of Animals
... Animals are very complex organisms, yet the structural basis of all animals begins with cells. A cell is the most basic structure of an animal and is considered the building block from which an animal’s body is made. All cells of an embryo have the same number and kinds of genes because they all des ...
... Animals are very complex organisms, yet the structural basis of all animals begins with cells. A cell is the most basic structure of an animal and is considered the building block from which an animal’s body is made. All cells of an embryo have the same number and kinds of genes because they all des ...
document
... hollow and stacked end to end •They do not have a nucleus and are actually dead •They are lined by lignin that helps them keep their strength •Xylem cells transport dissolved mineral ions and water from the roots to the leaves •Transport is unidirectional, in an upwards direction only ...
... hollow and stacked end to end •They do not have a nucleus and are actually dead •They are lined by lignin that helps them keep their strength •Xylem cells transport dissolved mineral ions and water from the roots to the leaves •Transport is unidirectional, in an upwards direction only ...
Week 17-18 notes
... from entering the female; • Diaphragm – which fits over the cervix and prevents semen from entering the uterus • both of these methods are more reliable when used in conjunction with a spermicidal foam or jelly ...
... from entering the female; • Diaphragm – which fits over the cervix and prevents semen from entering the uterus • both of these methods are more reliable when used in conjunction with a spermicidal foam or jelly ...
Biology, High School
... 1.1 Recognize that biological organisms are composed primarily of very few elements. The six most common are C, H, N, O, P, and S. 1.2 Describe the basic molecular structures and primary functions of the four major categories of organic molecules (carbohydrates, lipids, proteins, nucleic acids). 1.3 ...
... 1.1 Recognize that biological organisms are composed primarily of very few elements. The six most common are C, H, N, O, P, and S. 1.2 Describe the basic molecular structures and primary functions of the four major categories of organic molecules (carbohydrates, lipids, proteins, nucleic acids). 1.3 ...
Lisa
... Skin is made of 2 main layers. Epidermis + dermis. Epidermis=outer layer, thin, mostly dead cells The epidermis reproduces/divides rapidly because skin cells fall off constantly Older cells are pushed to the surface when newer ones are formed. The older cells are forced to be flat, and they lose the ...
... Skin is made of 2 main layers. Epidermis + dermis. Epidermis=outer layer, thin, mostly dead cells The epidermis reproduces/divides rapidly because skin cells fall off constantly Older cells are pushed to the surface when newer ones are formed. The older cells are forced to be flat, and they lose the ...
a. Name:____________________________________ Date:_____________ Period:_____ Schedule
... vaccine is derived from the cowpox exudate that Edward Jenner used during the 1700s to inoculate villagers against the more pathogenic smallpox. Louis Pasteur, noted for his discovery of the rabies treatment, also developed several vaccines. Poliovirus, the cause of infantile paralysis (poliomyeliti ...
... vaccine is derived from the cowpox exudate that Edward Jenner used during the 1700s to inoculate villagers against the more pathogenic smallpox. Louis Pasteur, noted for his discovery of the rabies treatment, also developed several vaccines. Poliovirus, the cause of infantile paralysis (poliomyeliti ...
Topic 1 Patterns in Nature
... Intake of the materials required by all living organisms and the removal of waste products are influenced by the surface areas of membranes through which these nutrients and waste products must pass. In large multicellular forms, complex organ systems with large surface area to volume ratios, have e ...
... Intake of the materials required by all living organisms and the removal of waste products are influenced by the surface areas of membranes through which these nutrients and waste products must pass. In large multicellular forms, complex organ systems with large surface area to volume ratios, have e ...
7. Biology Glossary
... together the cellulose molecules in plant cell walls. Archaea: A group unicellular microorganisms that make up one of the three domains in the phylogenetic system of classification (based on evolutionary relationships determined by genetic differences between organisms). The other domains are Bacter ...
... together the cellulose molecules in plant cell walls. Archaea: A group unicellular microorganisms that make up one of the three domains in the phylogenetic system of classification (based on evolutionary relationships determined by genetic differences between organisms). The other domains are Bacter ...
June 2008
... artificial insemination and surrogate motherhood cryopreservation and artificial insemination in vitro fertilization and adoption in vitro fertilization and superovulation ...
... artificial insemination and surrogate motherhood cryopreservation and artificial insemination in vitro fertilization and adoption in vitro fertilization and superovulation ...
The Human Body
... • Bone is made of calcium-hardened fibers that make it strong yet flexible. It is a living tissue and receives oxygen and nutrients by blood vessels that pass through hollow channels in the bone called Haversion canal. • Bones also contain nerve fibers. Bones are surrounded by a tough white membran ...
... • Bone is made of calcium-hardened fibers that make it strong yet flexible. It is a living tissue and receives oxygen and nutrients by blood vessels that pass through hollow channels in the bone called Haversion canal. • Bones also contain nerve fibers. Bones are surrounded by a tough white membran ...
embryo - Zanichelli online per la scuola
... Throughout the male life span, spermatogonia continue to divide by mitosis. One daughter cell remains a spermatogonium; the other daughter cell becomes a primary spermatocyte. The primary spermatocyte undergoes meiosis. The first meiotic division results in two secondary spermatocytes; the second di ...
... Throughout the male life span, spermatogonia continue to divide by mitosis. One daughter cell remains a spermatogonium; the other daughter cell becomes a primary spermatocyte. The primary spermatocyte undergoes meiosis. The first meiotic division results in two secondary spermatocytes; the second di ...
Musculoskeletal notes (Human Body I)
... protect delicate internal organs d. store minerals such as calcium and phosphorus i. bones are actually dynamic—they store calcium until it is needed for metabolic function, then release it into the blood stream e. some produce red and some white blood cells B. Bone structure ...
... protect delicate internal organs d. store minerals such as calcium and phosphorus i. bones are actually dynamic—they store calcium until it is needed for metabolic function, then release it into the blood stream e. some produce red and some white blood cells B. Bone structure ...
The Integumentary System
... To function in protection, the epidermis must rely on its ability to create & repair itself following an injury. New cells must be made at the same rate that dead cells flake off. Cells push off from the stratum basale into each upper layer until they die. Regeneration time for a cell is about ...
... To function in protection, the epidermis must rely on its ability to create & repair itself following an injury. New cells must be made at the same rate that dead cells flake off. Cells push off from the stratum basale into each upper layer until they die. Regeneration time for a cell is about ...
Science as a way of learning
... o Growth and Development: Possess DNA (inherited information) to function o Energy utilization: can transform food into energy o Response to environment: can respond to stumli o Reproduction: can reproduce through information in DNA & make more cells o They evolved from other things Life is Also O ...
... o Growth and Development: Possess DNA (inherited information) to function o Energy utilization: can transform food into energy o Response to environment: can respond to stumli o Reproduction: can reproduce through information in DNA & make more cells o They evolved from other things Life is Also O ...
Introduction to Animals
... • Animals with a one-way digestive system have a mouth and an anus • Food enters the mouth, continues in one direction through the digestive tract, and wastes leave through the anus • Includes annelids, arthropods, & ...
... • Animals with a one-way digestive system have a mouth and an anus • Food enters the mouth, continues in one direction through the digestive tract, and wastes leave through the anus • Includes annelids, arthropods, & ...
The Platyhelminthes are flatworms that lack a coelom
... the flatworms:acoelomate organisms that include many freeliving and parasitic forms. Most of the flatworms are classified in the superphylum Lophotrochozoa, which also includes the mollusks and annelids. The Platyhelminthes consist of two lineages: the Catenulida and the Rhabditophora. ...
... the flatworms:acoelomate organisms that include many freeliving and parasitic forms. Most of the flatworms are classified in the superphylum Lophotrochozoa, which also includes the mollusks and annelids. The Platyhelminthes consist of two lineages: the Catenulida and the Rhabditophora. ...
File - Gobowen Primary School
... which they are suited and describe how different habitats provide for the basic needs of different kinds of animals and plants, and how they depend on each other Identify and name a variety of plants and animals in their habitats, including microhabitats. Describe how animals obtain their food from ...
... which they are suited and describe how different habitats provide for the basic needs of different kinds of animals and plants, and how they depend on each other Identify and name a variety of plants and animals in their habitats, including microhabitats. Describe how animals obtain their food from ...
Cell theory
In biology, cell theory is a scientific theory which describes the properties of cells. These cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a century later, many debates about cells began amongst scientists. Most of these debates involved the nature of cellular regeneration, and the idea of cells as a fundamental unit of life. Cell theory was eventually formulated in 1838. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchow contributed to the theory. Cell theory has become the foundation of biology and is the most widely accepted explanation of the function of cells.The three tenets to the cell theory are as described below: All living organisms are composed of one or more cells. The cell is the most basic unit of life. All cells arise from pre-existing, living cells, by biogenesis.