The document discusses three main types of rocks: sedimentary rocks which are formed from compressed layers of settled earth materials; metamorphic rocks which were once igneous or sedimentary rocks but were changed by heat and pressure; and igneous rocks which form from cooled lava either underground or from volcanoes. Examples of each rock type are provided.
This explains each rock in the Rock Cycle and is perfect to teach a lesson or to help you with homework. It explains how the rock is formed, it's properties and examples of the rocks.
This explains each rock in the Rock Cycle and is perfect to teach a lesson or to help you with homework. It explains how the rock is formed, it's properties and examples of the rocks.
Year 11 Powerpoint about 3 main types of rock and their characteristics. Looks at their distribution in the UK. Brief intoduction about Granite (in more detail)
The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among them have to do with how they are formed. Sedimentary rocks are formed from particles of sand, shells, pebbles, and other fragments of material. Together, all these particles are called sediment.
Year 11 Powerpoint about 3 main types of rock and their characteristics. Looks at their distribution in the UK. Brief intoduction about Granite (in more detail)
The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and the differences among them have to do with how they are formed. Sedimentary rocks are formed from particles of sand, shells, pebbles, and other fragments of material. Together, all these particles are called sediment.
Can you solve these questions please with clear explanation Describe.pdfAmansupan
Can you solve these questions please with clear explanation Describe the main difference
between Kaolinite and Montmorillonite clay minerals Differentiate between Sedimentary,
Igneous and metamorphic Rocks. Identify the main Transportation agents for the following
types of soil. Wind Sea (salt water) Lake (fresh water) River\" Ice
Solution
Minerals-Montmorillonite
Minerals-Kaolinite
The main difference between Igneous, Sedimentary and Metamorphic rocks, is the way that they
are formed, and their various textures.
Igneous Rocks
Igneous rocks are formed when magma (or molten rocks) cool down, and become solid. High
temperatures inside the crust of the Earth cause rocks to melt, and this substance is known as
magma. Magma is the molten material that erupts during a volcano. This substance cools down
slowly, and causes mineralization to take place. Gradually, the size of the minerals increase until
they are large enough to be visible to the naked eye. Igneous rocks are mostly formed beneath
the Earth’s surface.
The texture of Igneous rocks can be referred to as Phaneritic, Aphaneritic, Glassy (or vitreous),
Pyroclastic or Pegmatitic. Examples of Igneous Rocks include granite, basalt and diorite.
Sedimentary Rocks
Sedimentary rocks are usually formed by sedimentation of the Earth’s material, and this
normally occurs inside water bodies. The Earth’s material is constantly exposed to erosion and
weathering, and the resulting accumulated loose particles eventually settle, and form
Sedimentary rocks. Therefore, one can say, that these types of rocks are formed slowly from the
sediments, dust and dirt of other rocks. Erosion takes place due to wind and water. After
thousands of years, the eroded pieces of sand and rock settle, and become compacted to form a
rock of their own.
Sedimentary rocks range from small clay-size rocks to huge boulder-size rocks. The textures of
Sedimentary rocks are mainly dependent on the parameters of the clast, or the fragments of the
original rock. These parameters can be of various types, such as surface texture, round, spherical
or in the form of grain. The most common type of Sedimentary rock is the Conglomerate, which
is caused by the accumulation of small pebbles and cobbles. Other types include shale, sandstone
and limestone, which is formed from clastic rocks and the deposition of fossils and minerals.
Metamorphic Rocks
Metamorphic rocks are the result of the transformation of other rocks. Rocks that are subjected to
intense heat and pressure change their original shape and form, and become Metamorphic rocks.
This change in shape is referred to as metamorphism. These rocks are commonly formed by the
partial melting of minerals, and re-crystallization. Gneiss is a commonly found Metamorphic
rock, and it is formed by high pressure, and the partial melting of the minerals contained in the
original rock.
Metamorphic rocks have textures like slaty, schistose, gneissose, granoblastic or hornfelsic.
Examples of these types .
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.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Richard's entangled aventures in wonderlandRichard 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.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
3. Sedimentary Rocks
How They are Made
Wind and water break down the earthWind and water break down the earth
Bits of earth settle in lakes and riversBits of earth settle in lakes and rivers
Layers are formed and build upLayers are formed and build up
Pressure and time turn the layers to rockPressure and time turn the layers to rock
5. Metamorphic Rocks
What are They?
Rocks that have changedRocks that have changed
They were once igneous or sedimentaryThey were once igneous or sedimentary
Pressure and heat changed the rocksPressure and heat changed the rocks
7. Igneous Rocks
What are They?
Fire RocksFire Rocks
Formed underground by trapped, cooledFormed underground by trapped, cooled
magmamagma
Formed above ground when volcanoesFormed above ground when volcanoes
erupt and magma coolserupt and magma cools
