Far away.

1.5M ratings
277k ratings

See, that’s what the app is perfect for.

Sounds perfect Wahhhh, I don’t wanna
biology-is-lifeee
study-well: “Disclaimer: These are online resources that I have found, They are not meant to be your only source of study, instead you can use them to your enhance your normal study. I don’t know what level these resources are aimed at, but I’ve...
study-well

Disclaimer: These are online resources that I have found, They are not meant to be your only source of study, instead you can use them to your enhance your normal study. I don’t know what level these resources are aimed at, but I’ve tried to provide a range for a number of different topics.

The Body:

Cells:

Animals and Plants:

Genetics:

Evolution:

Health:

Other:

Online Lessons and Guides:

  • Chemistry of life
    • Elements and atoms – elements and atoms, matter, elements and atoms, introduction to the atom, atomic number, atomic mass, and isotopes.
    • Electron shells and orbitals – orbitals, electronic configuration, valence electrons, groups of the periodic table, the periodic table, electron shells, and orbitals.
    • Chemical bonds and reactions – ionic, covalent and metallic bonds, electronegativity and bonding, intermolecular forces, chemical bonds, chemical reactions introduction and chemical reactions
  • Water, Acids and bases:
    • Hydrogen bonding in water – hydrogen bonding in water, hydrogen bonds in water, water as a solvent, solvent properties of water.
    • Cohesion And adhesion – capillary action and why we see a meniscus, surface tension, cohesion and adhesion in water
    • Temperature and state changes in water – LeBron asks why does sweating cool you down, evaporative cooling, heat of vaporisation of water and ethanol, specific heat of water, liquid water denser than ice, specific heat, heat of vaporisation, and density of water
    • Acids, bases and pH – autoionisation of water, Arrhenius definition of acids and bases, bronsted-Lowry definition of acits and bases, definition of pH, acids bases, pH and buffers
  • Cellular and molecular biology
    • Cells – diffusion and osmosis, nucleim membranes, ribosomes, eukaryotws and prokaryotes, endoplasmic reticulum and golgi bodies, chromosomes, chromatids, and chromatin.
    • Introduction to cell division - Fertilization terminology: gametes, zygotes, haploid and diploid, zygote differentiating into somatic and germ cells
    • Mitosis – interphase, mitosis, phases of mitosis, mitosis questions.
    • Meiosis – comparison of mitosis and meiosis, chromosomal crossover in meiosis 1, phases of meiosis 1, phases of meiosis 2.
    • Cellular respiration – ATP, ATP hydrolysis mechanism, introduction to cellular mechanism, oxidation and reduction review from biological point of view, oxidation and reduction in cellular respiration, glycolysis, krebs cycle, elctron transport chain, oxidative phosphorylation and chemiosmosis.
    • Photosynthesis – light reactions, photophosphorylation, calvin cycle, photorespiration, C-4 photosynthesis, cam plants
  • Human Biology:
    • Circulator and pulmonary systems – the lungs, red blood cells, circulatory system, haemoglobin.
    • The neuron and nervous system – neuron anatomy, sodium potassium pump, action potentials, salutatory conduction, neuronal synapses.
    • The kidney and nephron – kidney and nephonr, secondary active transport.
    • Muscles – myosin and actin, tropomyosin and troponin, role of sarcoplasmic reticulum in muscle cells, anatomy of skeletal muscle fibre.
    • Immunology – phagocytes, immune responses, b lymphocytes, antigen presenting cells and MHC II complexes, helper T cells, cytotoxic t cells and MHC I complexes, review of cells, inflammatory response.
  • Heredity and evolution
    • Evolution and natural selection – introduction, ape clarification, intelligent design and evolution, natural selection and the owl butterfly, variation in a spcies.
    • Heredity and genetics – introduction, Punnett squares, allele frequency, Hardy Weinberg equation, sex linked traits, DNA, RNA transcription and translation, alleles and genes.
    • Tree of life – taxonomy and the tree of life, species, bacteria, human prehistory
  • Crash Course
    • Biology and ecology – pollution, conservation, ecosystems, nitrogen cycle, history of life on earth, population growth.
  • (Spotlight Lessons): Ecology
    • Estimating Population Size – simulate mark and recapture by using small objects to trap and tag.  A simple formula will tell you what the overall population size is which can be verified by counting the objects in the bag.
    • Owl Pellet Dissection –  owl pellets are undigested bits of fur and bones  that owls regurgitate. Students can examine the contents, reconstruct the skeleton of the prey and make inferences about the owl’s diet.
    • Interpreting Ecological Data – examine charts, data tables  and graphs to answer questions about population size, growth, and carrying capacity.
    • Biome Project – as a group, investigate a biome and present to the class the main features, animal and plant species present and general climate.
    • Isopod Behavior Lab – collect isopods (pillbugs) and design a chamber to test their response to different environments, such as temperature, moisture, and substrate.
medicallynaive
sciviz

Molecular Landscapes 

Created by: Digizyme

These David Goodsell-inspired interactive cellular landscapes reveal the complicated beauty of the molecular world.

If you follow this (x) link you can actually click on all of the different parts in these landscapes to learn what they are and what they do!

medicallynaive

I’ve found gold!

This is an interactive molecular landscape programme. In their website, you can click on a cell structure and read a short explanation of its function.

Biology is beautiful and I had to share this.

medlabscience
neuromorphogenesis

How memories form and how we lose them

Did you know that as we get older, the hippocampus loses 5% of its neurons every decade? That amounts to a total loss of 20% by the time we are 80 years old - which helps explain why our memories seem to fade.

One leading cause of chronic memory problems is stress. When we are constantly overloaded with work and personal responsibilities, our bodies are on hyperalert. This response has evolved from the physiological mechanism designed to make sure we can survive in a crisis. Stress chemicals help mobilize energy and increase alertness. However, with chronic stress our bodies become flooded with these chemicals, resulting in a loss of brain cells, and an inability to form new ones, which affects our ability to retain new information.

So take a break! And remember to thank yourself later.

Think back to a really vivid memory. Got it? Now try to remember what you had for lunch three weeks ago. That second memory probably isn’t as strong—but why not? Why do we remember some things, and not others? And why do memories eventually fade?

Let’s look at how memories form in the first place. When you experience something – like dialing a phone number – the experience is converted into a pulse of electrical energy that zips along a network of neurons. Information first lands in short term memory where it’s available for anywhere from a few seconds to a couple of minutes. It’s then transferred to long-term memory through areas such as the hippocampus and finally to several storage regions  across the brain. Neurons throughout the brain communicate at dedicated sites called synapses using specialized neurotransmitters. If two neurons communicate repeatedly a remarkable thing happens – the efficiency of communication between them increases. This process, called long-term potentiation, is considered to be a mechanism by which memories are stored long-term.

Source: Ted-ed

Animation by Patrick Smith 

Educator: Catharine Young

Source: ed.ted.com
Top Photos