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Plant Cells vs Animal Cells
In the leveled reader Plant Cells vs Animal Cells, fundamental science concepts in biology are explained through simply written text and colorful, fun illustrations. Young readers will discover that plants and animals have different types of cells. Cells are made of atoms and molecules and do different jobs inside living things.Both plant cells and animal cells are surrounded by a cell membrane and have organelles, which are structures inside cells that do different jobs. The nucleus of a cell is the organelle where DNA is made and held. DNA is a strand of linked atoms that tell the cell what to do. A ribosome is an organelle that makes proteins, which are long chains of atoms. Proteins do all the work inside a cell, cutting, joining, and moving molecules. A mitochondrion is an organelle that makes energy for the cell.Plant and animal cells are also different. Plant cells have a stiff outer cell wall in addition to a cell membrane. Animals cells have only a cell membrane. Plant cells have chloroplasts, which are organelles that catch sunlight to make food. Animal cells do not have chloroplasts and do not make food from sunlight. Animals get their food from eating other animals and plants.A pronunciation guide of scientific terms is included. 24 pages filled with engaging, colorful illustrations. Reading Level 1-3, Interest Level 2-5.
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The Architecture of Computer Hardware, Systems Software, and Networking : An Information Technology Approach
The Architecture of Computer Hardware, Systems Software and Networking is designed help students majoring in information technology (IT) and information systems (IS) understand the structure and operation of computers and computer-based devices.Requiring only basic computer skills, this accessible textbook introduces the basic principles of system architecture and explores current technological practices and trends using clear, easy-to-understand language.Throughout the text, numerous relatable examples, subject-specific illustrations, and in-depth case studies reinforce key learning points and show students how important concepts are applied in the real world. This fully-updated sixth edition features a wealth of new and revised content that reflects today’s technological landscape. Organized into five parts, the book first explains the role of the computer in information systems and provides an overview of its components.Subsequent sections discuss the representation of data in the computer, hardware architecture and operational concepts, the basics of computer networking, system software and operating systems, and various interconnected systems and components.Students are introduced to the material using ideas already familiar to them, allowing them to gradually build upon what they have learned without being overwhelmed and develop a deeper knowledge of computer architecture.
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Cells Remain
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Discovering Our Cells
Have you ever wondered what our body is made up of and what it looks like under a microscope?How does our body work and how can we protect it against dangerous invaders?Our body is made up of four main types of tissues and 200 different types of cells organized into groups, working together, forming the organs and systems of our body.A pathologist, like me, is a doctor who studies tissues and cells under a microscope and has the essential knowledge to identi-fy and describe their diseases.This work is a long, lonely, scientific journey, where hundreds of his-tological images alternate daily in front of our eyes like scenes from a silent movie.This micro-scopic, lonely journey becomes magical when cells inadvertently form images of beauty similar to that found in paintings.Images of childhood memories and drawings, like a flower, a heart, an animal, a toy, shapes and colours changing with every moment, remind us of works of art created with sophistication and devotion by a great artist.Get ready for a journey into our wonderful, magical inner world; the organs and systems of our body.Page by page you will discover the amazing images of our tissues and cells revealed under the microscope.You will also learn how to protect yourselves against invisible enemies, viruses, and germs.Welcome to a unique scientific journey! You will be amazed at the beauty of knowledge!The creation of this book was the result of a collective effort between a group of people who worked with me and the publishing house that implemented it.Our common denominator was the magical combination of Science and Art.First of all, I would like to deeply thank, Niki Papatheochari, a diverse and significant personality, who, through her unique work, embodies a picture of perpetual creativity.It is a special honour for me that she prefaced the first edition of my book and contributed valuable advice and inspirational interventions.I thank her for warmly embracing this effort from beginning to end, and for the invaluable knowledge that she generously offered, both as a scientist and as a human being.I wholeheartedly thank the Emeritus Professor of Surgery at the University of Athens Vasileios Golematis, a prominent figure in the global medical and academic community, for prefacing the second edition of my book.Professor Vasileios Golematis, a distinguished scientist and an exceptional man, is a model university teacher and an inexhaustible source of inspiration for his students and colleagues.I would like to warmly thank the medical students Vagia Karapepera, for her wonderful sketches inspired by my lectures in Histology, and Michael Tsierkezos, for setting the book's text to music from which the accompanying video clip emerged.I would also like to thank Eleni Nalbandi for her valuable assistance in editing.Finally, I am really thankful to my family and all those who helped me with their know-how and moral support in completing this original project.Maria Lambropoulou
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How does communication between cells work?
Communication between cells occurs through a variety of mechanisms, including direct contact, chemical signaling, and electrical signaling. Direct contact occurs when cells physically touch each other, allowing for the exchange of molecules and information. Chemical signaling involves the release of signaling molecules, such as hormones or neurotransmitters, which travel through the bloodstream or extracellular fluid to target cells with specific receptors. Electrical signaling occurs in nerve cells, where electrical impulses travel along the cell membrane to transmit information. Overall, these communication mechanisms allow cells to coordinate their activities and respond to changes in their environment.
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Why are liver cells animal cells?
Liver cells are animal cells because they are part of the tissue and organ system of animals. They are eukaryotic cells, meaning they have a true nucleus and membrane-bound organelles, which are characteristic of animal cells. Additionally, liver cells perform specific functions related to the metabolism and detoxification of substances within the body, which are essential for the survival and functioning of animals. Therefore, liver cells are classified as animal cells due to their structure, function, and role within the animal body.
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What are the differences between embryonic stem cells, omnipotent stem cells, adult stem cells, totipotent stem cells, and multipotent stem cells?
Embryonic stem cells are derived from embryos and have the potential to develop into any type of cell in the body. Omnipotent stem cells, also known as pluripotent stem cells, are similar to embryonic stem cells in that they can differentiate into any type of cell, but they are derived from adult tissues. Adult stem cells are found in various tissues and have the ability to differentiate into a limited range of cell types. Totipotent stem cells have the highest potential for differentiation and can develop into any type of cell, as well as into extraembryonic tissues such as the placenta. Multipotent stem cells can differentiate into a limited number of cell types, typically within a specific tissue or organ.
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What are egg cells and sperm cells?
Egg cells, also known as ova, are the female reproductive cells produced by the ovaries. They are larger than sperm cells and contain genetic material from the mother. Sperm cells, on the other hand, are the male reproductive cells produced by the testes. They are smaller and more numerous than egg cells, and contain genetic material from the father. When an egg cell is fertilized by a sperm cell, it forms a zygote, which eventually develops into a new organism.
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Tiny Science: Cells
Tiny Science - giving MINI-scientists MAXIMUM understanding of the MICROscopic!A fun and visual series exploring the science of things we cannot see with the naked eye, zooming right in on the itty-bitty creatures, objects and machines that have an enormous impact on us and the world around us.Perfect for children keen to get up-close to the building blocks of our world. Tiny Science: Cells places remarkable cells UNDER THE MICROSCOPE to find answers to exCELLent questions, such as ... - How many cells are there in an apple? - What is the biggest cell in the world? - How do cells live and multiply?Fun cartoon-style illustrations interact with real-life pictures of many amazing microscopic features, making this series ideal for engaging readers aged 8 and up. It's time to explore the infinitesimal!Other Tiny Science books in the series:GermsGenes and DNAMicroscopic CreaturesAtoms and MoleculesNanotechnology
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Sea in My Cells
Water is a shape-shifter, a life-giver, an almost magical thing.Explore the journey of water from the sea, to your glass, to your cells. From sea to clouds. From clouds to rain. From rain to lake. From lake to glass. Water is a shape-shifter. Take a big gulp. Can you taste the sea?In this ode to water, learn how the lifecycle of water works.All the water on earth is all there ever was, and all there ever will be.So, the next time you pour a glass of water, take a moment to think about all the wonderful things this life-giving resource does.Author Laura Alary’s free verse breaks big ideas into child-sized pieces, making Sea in my Cells an accessible introduction to the water cycle. Andrea Blinick’s illustrations take readers from the kitchen to the ocean and to the clouds and back.A concluding Author’s Note shares further information about the water cycle for young readers.
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Dead Cells Steam Altergift
Roguelike, Rogue-lite, roguelike-like, rogueschmike! No matter what you call them, the world could always use another! As such, we'd like to present for your consideration, the illegitimate child of the roguelike and the metroidvania, the RogueVANIA. Anywho, enough with the sales pitch, let's take a closer look. By metroidVania, we're really talking about a fixed, hand designed, interconnected world. The game takes place on an immense island that never changes. All of the biomes, bosses and t...
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Dead Cells Turkey (Steam)
This product is a brand new and unused Dead Cells Turkey (Steam)
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How do killer cells recognize infected body cells?
Killer cells, also known as cytotoxic T cells, recognize infected body cells through a process called antigen presentation. Infected cells display fragments of foreign proteins, known as antigens, on their surface using a protein called major histocompatibility complex (MHC) class I. Killer cells have receptors that can recognize these antigens when they are presented on the infected cell's surface. Once the killer cell identifies an infected cell, it releases toxic substances to destroy the infected cell and prevent the spread of the infection.
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What are common cell components of muscle cells, gland cells, and absorbing intestinal cells?
Common cell components of muscle cells, gland cells, and absorbing intestinal cells include the cell membrane, cytoplasm, nucleus, and organelles such as mitochondria and endoplasmic reticulum. Muscle cells also contain specialized structures called myofibrils, which are responsible for muscle contraction. Gland cells contain secretory vesicles for releasing hormones or other substances. Intestinal cells have microvilli on their surface to increase the surface area for absorption, and they also contain specialized transport proteins for moving nutrients across the cell membrane.
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How do you compare the components of plant cells, virus cells, and animal cells?
Plant cells, virus cells, and animal cells all have different components and structures. Plant cells have a cell wall, chloroplasts, and a large central vacuole, which are not present in animal cells. Virus cells are not considered living cells and are much simpler in structure, consisting of genetic material (DNA or RNA) surrounded by a protein coat. Animal cells have centrioles and lysosomes, which are not found in plant cells. Additionally, animal cells do not have a cell wall like plant cells do. Overall, each type of cell has unique components that contribute to their specific functions and characteristics.
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Do nerve cells without sheath cells conduct impulses more slowly than those with sheath cells?
Yes, nerve cells without sheath cells conduct impulses more slowly than those with sheath cells. The sheath cells, also known as myelin, help to insulate and speed up the transmission of electrical impulses along the nerve cells. Without the myelin sheath, the impulses have to travel along the entire length of the nerve cell, resulting in slower conduction. This is why conditions that damage the myelin sheath, such as multiple sclerosis, can lead to slower nerve conduction and impaired neurological function.
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