The document is about cells and their structures and functions. It discusses that cells are the basic unit of life and come in many shapes and sizes. It describes key animal and plant cell components like the cell membrane, nucleus, mitochondria, chloroplasts, and cell wall. It explains important cellular processes like respiration, photosynthesis, and protein synthesis.
This is a presentation about some of the major characteristics of microorganisms (fungi, protists and bacteria)
Acknowledgement to all internet sources of this presentation.
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
This is a presentation about some of the major characteristics of microorganisms (fungi, protists and bacteria)
Acknowledgement to all internet sources of this presentation.
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
Cell :- detailed about cell and their constituent.Sumit Tiwari
A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a variety of tasks
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Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This illustration contains several discussion points relating to cell structure, and could form the basis of a debate about the similarity between a cell and a city/country. For example, both cells and cities/countries:
produce their own power: represented by pink/red buildings (mitochondria)
have a central controlling organisation: represented by tall building in centre (nucleus)
have border controls: represented by perimeter wall (membrane/wall)
have storage facilities: represented by the harbour and lakes (vacuoles)
import food and gas: represented by oil tankers
some can produce their own food: represented by green building (chloroplast)
export waste: represented by dumper trucks
have good communication links with neighbours: represented by communications satellites (neurones and hormones)
have good defence: represented by heavily-armoured ships and white boats (white blood cells)
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Photo credit: Eye of Science / Science Photo Library
Coloured scanning electron micrograph (SEM) of sperm (blue) attempting to penetrate a human egg (red). Each sperm (spermatozoa) has a rounded head and a long tail with which it swims. Women usually release one egg (ovum) per month, whereas men release millions of sperm in each ejaculation. Only one of these sperm can penetrate the egg's thick outer layer (zona pellucida) and fertilise it. Fertilisation occurs when the sperm's genetic material (deoxyribonucleic acid, DNA) fuses with the egg's DNA. When this occurs the egg forms a barrier to other sperm. Magnification: x650 when printed 10 centimetres wide.
Teacher notes
One micrometer (µm), also known as a micron, is equal to one-millionth of a meter. 1 µm = 0.000001 m.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This activity could be used to gauge students’ existing knowledge of the major organelles in animal and plant cells.
Teacher notes
Appropriately coloured voting cards could be used with this classification activity to increase class participation.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Photo credit: Dr. Gopal Murti / Science Photo Library
Light micrograph of squamous epithelial cells from the human mouth. These flat, scale-like cells have oval nuclei (purple) and granular cytoplasm. The epithelia are tissues that cover all body surfaces, cavities and tubes apart from the blood and lymph vessels. Epithelial cells form a protective layer within the mouth. Normally, they rest on a basement membrane which separates the epithelium from underlying connective tissue. Blood vessels do not extend beyond the basement layer, and epithelial cells are dependent on oxygen and metabolites diffusing from underlying tissue. Magnification: x1000 at 35mm size.
Teacher notes
This five-stage animation shows how to make and examine a cheek cell. Suitable prompts could include:
How are animal cells different to plant cells?
Why are cheek cells a good example of a typical animal cell?
Which organelles can you identify within the cheek cells?
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This click and reveal activity could be used to check students’ understanding of the organelles found in animal cells.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
See the ‘Growth and Development’ presentation for more information about stem cells and human growth.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This click and reveal activity could be used to check students’ understanding of animal cell structures and function.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This matching activity could be used as a plenary or revision exercise on animal cells. Students could be asked to complete the questions in their books and the activity could be concluded by the completion on the IWB.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Photo credit: Andrew Syred / Science Photo Library
Light micrograph of the epidermis of an onion, showing the bands of large, rectangular cells. The spot in the centre of each cell is its nucleus. Magnification: x200 at 35mm size.
Teacher notes
This five-stage animation shows how to make and examine an onion cell. Suitable prompts could include:
How are plant cells different to animal cells?
Why are onion cells a good example of a typical plant cell?
Which organelles can you identify within the onion cells?
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This click and reveal activity could be used to check students’ understanding of the organelles found in plant cells.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
See the ‘Growth and Development’ presentation for more information about meristems and plant growth.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This click and reveal activity could be used to check students’ understanding of plant cell structures and function.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This matching activity could be used as a plenary or revision exercise on plant cells. Students could be asked to complete the questions in their books and the activity could be concluded by the completion on the IWB.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
Some animal cells have a small/temporary vacuole involved in digestion or secretion.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
Chloroplasts are between 2 µm and 10 µm in diameter.
Teacher notes
This activity could be used to check students’ understanding of cell structure and function. Students could work individually or in small groups, with mini-whiteboards used to convey the answers.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
See the ‘Photosynthesis’ presentation for more information on photosynthesis.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This three-stage sequence introduces the link between genes and proteins before the mechanism of protein synthesis is explored on the next slide.
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This six-stage sequence shows how proteins are made. Suitable prompts could include:
What is the name of the three-dimensional structure of DNA?
What are the base-pairing rules?
Why does the messenger RNA move out of the nucleus?
How many bases are involved in the code for one amino acid?
How will protein synthesis differ in different specialized cells?
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
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Boardworks GCSE Additional Science: Biology
Animal and Plant Cells
Teacher notes
This multiple-choice quiz could be used as a plenary activity to assess students’ understanding of animal and plant cells. The questions can be skipped through without answering by clicking “next”. Students could be asked to complete the questions in their books and the activity could be concluded by the completion on the IWB.