The document summarizes key information about cells:
- Cells are the smallest and fundamental unit of life, first observed by Robert Hooke in 1665 when he saw "empty boxes" in a cork sample under a microscope.
- The cell theory, developed by Theodor Schwann and Matthias Schleiden in 1839, states that all living things are made of cells. Rudolf Virchow further contributed that all cells come from pre-existing cells.
- Cells come in two main types - prokaryotic cells which were the first on Earth and lack a nucleus, and eukaryotic cells which have a nucleus surrounded by a membrane and contain many membrane-bound organelles.
This presentation covers basics of cell structure and functions of different cell organelles in detail with interactive illustrations. I hope this presentation will be beneficial for instructor's as well as students.
All living things are made of organized parts, obtain energy from their surroundings, perform chemical reactions, respond to their environment, grow and develop, change with time, and reproduce
All organisms are made of cells
All cells are produced from other cells (all cells arise from pre-existing cells by cell division)
The cell is the most basic unit of life
THE CELL-Unlocking the Mysteries of the Cell: A Journey into the Building Blo...Nursing Mastery
Unlocking the Mysteries of the Cell: A Journey into the Building Blocks of Life
Embark on an enlightening voyage into the intricate world of cells with our captivating SlideShare presentation. From the tiniest microorganisms to the complex structures within our bodies, delve into the fundamental units of life that shape our existence.
In this visually engaging presentation, we explore the fascinating realms of cell biology, unraveling the mysteries of cellular structure, function, and diversity. Discover the inner workings of cells, from the powerhouse mitochondria to the information hub of the nucleus, and delve into the dynamic processes that sustain life.
Featuring stunning visuals, insightful explanations, and intriguing facts, our presentation is designed to enlighten and inspire audiences of all backgrounds. Whether you're a seasoned biologist, a curious student, or simply intrigued by the wonders of life, join us on this immersive journey into the heart of the cell.
Unlock the secrets of life itself and gain a deeper appreciation for the remarkable complexity and beauty of the cellular world. Don't miss out on this captivating exploration of "the cell" – the foundation of all living organisms.
This presentation covers basics of cell structure and functions of different cell organelles in detail with interactive illustrations. I hope this presentation will be beneficial for instructor's as well as students.
All living things are made of organized parts, obtain energy from their surroundings, perform chemical reactions, respond to their environment, grow and develop, change with time, and reproduce
All organisms are made of cells
All cells are produced from other cells (all cells arise from pre-existing cells by cell division)
The cell is the most basic unit of life
THE CELL-Unlocking the Mysteries of the Cell: A Journey into the Building Blo...Nursing Mastery
Unlocking the Mysteries of the Cell: A Journey into the Building Blocks of Life
Embark on an enlightening voyage into the intricate world of cells with our captivating SlideShare presentation. From the tiniest microorganisms to the complex structures within our bodies, delve into the fundamental units of life that shape our existence.
In this visually engaging presentation, we explore the fascinating realms of cell biology, unraveling the mysteries of cellular structure, function, and diversity. Discover the inner workings of cells, from the powerhouse mitochondria to the information hub of the nucleus, and delve into the dynamic processes that sustain life.
Featuring stunning visuals, insightful explanations, and intriguing facts, our presentation is designed to enlighten and inspire audiences of all backgrounds. Whether you're a seasoned biologist, a curious student, or simply intrigued by the wonders of life, join us on this immersive journey into the heart of the cell.
Unlock the secrets of life itself and gain a deeper appreciation for the remarkable complexity and beauty of the cellular world. Don't miss out on this captivating exploration of "the cell" – the foundation of all living organisms.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
4. Discovery of Cells
Robert Hooke (1665)
🞑 Observed sliver of cork
🞑 Saw “row of empty boxes”
🞑 Coined the term cell
5. Cell theory
(1839)Theodor Schwann & Matthias Schleiden
“ all living things are made of cells”
(1855) Rudolf Virchow
“Omnis cellula e cellula ” all cells arise from pre-
existing cells
6. Principles of Cell Theory
All living things are made of cells
Smallest living unit of structure and
function of all organisms is the cell
All cells arise from preexisting cells
(this principle discarded the idea of
spontaneous generation)
9. Characteristics of All Cells
A surrounding membrane
Protoplasm – cell contents in thick fluid
Organelles – structures for cell function
Control center with DNA
12. Prokaryotic Cells
No membrane bound nucleus
Nucleoid = region of DNA concentration
Organelles not bound by membranes
13. Eukaryotic Cells
Nucleus bound by membrane
Include fungi, protists, plant, and
animal cells
Possess many organelles
Protozoan
14.
15. THE UNIVERSE INSIDE OUR
CELLS
Zoom into your own body to see the
different cells that make up your
heart, brain and bones.
These trillions building block of cells
are communicating with each other
every moment of our lives.
As the house is made by BRICKS.
20. CELL ORGANELLES
The cellular components are called the Cell
Organelles.
These cell organelles are membrane-bound,
present within the cells and are distinct in their
structures and functions.
They coordinate with their functions efficiently
for the normal functioning of the cell.
There are various organelles present within
the cell and are classified into three categories
based on the presence or absence of
membrane.
21. TYPES OF CELL
ORGANELLES
Organelles without membrane: The Cell wall,
Ribosomes, Centrosome and Cytoskeleton are
without membrane-bound cell organelles.
Single membrane-bound organelles: Vacuole,
Lysosome, Golgi Apparatus, Endoplasmic
Reticulum are single membrane-bound organelles
present only in a eukaryotic cell.
Double membrane-bound
organelles: Mitochondria and chloroplast are
double membrane-bound organelles present only
in a eukaryotic cell.
23. Movement Across the Plasma Membrane
A few molecules move freely
🞑 Water, Carbon dioxide, Ammonia, Oxygen
Carrier proteins transport some molecules
🞑 Proteins embedded in lipid bilayer
🞑 Fluid mosaic model – describes fluid nature of a
lipid bilayer with proteins
24.
25. Membrane Proteins
1. Channels or transporters
🞑 Move molecules in one direction
2. Receptors
🞑 Recognize certain chemicals
27. CELL MEMBRANE FUNCTION
Passive Transport
Active Transport
Endocytosis
(phagocytosis & pinocytosis)
Exocytosis
28. Passive Transport
No energy required
Move due to gradient
🞑 differences in concentration, pressure, charge
Move to equalize gradient
🞑 High moves toward low
29. Types of Passive Transport
1. Diffusion
2. Osmosis
3. Facilitated diffusion
31. Osmosis
Special form of diffusion
Fluid flows from lower solute concentration
Often involves movement of water
🞑 Into cell
🞑 Out of cell
32. Solution Differences & Cells
solvent + solute = solution
Hypotonic
🞑 Solutes in cell more than outside
🞑 Outside solvent will flow into cell And
cell will swell
Isotonic
🞑 Solutes equal inside & out of cell no
transport
Hypertonic
🞑 Solutes greater outside cell
🞑 Fluid will flow out and shrink
33.
34. Facilitated Diffusion
Differentially permeable membrane
Channels (are specific) help molecule or
ions enter or leave the cell
Channels usually are transport proteins
(aquaporins facilitate the movement of
water)
No energy is used
35. Process of Facilitated Transport
Protein binds with molecule
Shape of protein changes
Molecule moves across membrane
37. Endocytosis
Movement of large material
🞑 Particles
🞑 Organisms
🞑 Large molecules
Movement is into cells
Types of endocytosis
🞑 bulk-phase (nonspecific)
🞑 receptor-mediated (specific)
38. Process of Endocytosis
Plasma membrane surrounds material
Edges of membrane meet
Membranes fuse to form vesicle
48. Endoplasmic Reticulum
Helps move substances within cells
Network of interconnected membranes
Two types
🞑 Rough endoplasmic reticulum
🞑 Smooth endoplasmic reticulum
49. Rough Endoplasmic Reticulum
Ribosomes attached to surface
🞑 Manufacture protiens
🞑 Not all ribosomes attached to rough ER
May modify proteins from ribosomes
52. Golgi Apparatus Function
1. Molecules come in vesicles
2. Vesicles fuse with Golgi membrane
3. Molecules may be modified by Golgi
53. Golgi Apparatus Function
(Continued)
4. Molecules pinched-off in separate vesicle
5. Vesicle leaves Golgi apparatus
6.Vesicles may combine with plasma membrane
to secrete contents
54.
55. Lysosomes
Contain digestive enzymes
Functions
🞑 Aid in cell renewal
🞑 Break down old cell parts
🞑 Digests invaders
56. CELL ORGANELLES DISCOVERY
1 NUCLEUS 1 ROBERT BROWN(1831)
2 GOLGI BODY 2 CAMEILLIO GOLGI
3 PLASMA MEMBRANE 3 SCHWANN(1838)
4 CYTOPLASM 4 STRASBURGER(1882)
5 ENDOPLASMIC RETICULUM 5 PORTER(1943)AND NAMED
IN(1953)
6 MITOCHONDRIA 6 ALTAMAN(1894)AND
NAMED BY BENDA(1897)
7 LYSOSOME 7 de DUVE(1955)
8 VACUOLES 8 SPALLANZONI
9 RIBOSOMES 9 ROBINSON AND BROWN
(1953) IN PLANT CELL AND
PALADE(1955) IN ANIMAL
CELL
10 MICROBODIES 10 RHODIN(1954)
(a)PEROXIXOMES (a)de DUVE(1965)
(b)GLYOXYSOME (b)BRIEDENBACH(1967)