Biologie in de klas
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Biologie in de klas
Artikelen, video's, afbeeldingen, plaatjes, applicaties, animaties en andere zaken die te maken hebben met biologie, sociale media en onderwijs kun je hier vinden.
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Scientists solve singing fish mystery - BBC News

Scientists solve singing fish mystery - BBC News | Biologie in de klas | Scoop.it
Scientists solve the bizarre mystery of the fish that hums at night.
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Een wereld zonder plastic is dichterbij dan je denkt

Een wereld zonder plastic is dichterbij dan je denkt | Biologie in de klas | Scoop.it
Eigenlijk moeten we gewoon stoppen met het maken en gebruiken van plastic. Maar waar gaan we dan bijvoorbeeld ons voedsel in verpakken? Nou, wat dacht je v
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Proof of evolution that you can find on your body

You have your mom's smile, your dad's eyes, and the ear muscles of a Triassic mammal. Subscribe to our channel! http://goo.gl/0bsAjO Forty-two percent o
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Microbial matter comes out of the dark

Microbial matter comes out of the dark | Biologie in de klas | Scoop.it
Undiscovered bacteria challenge what scientists know about microbial life.
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Lack of nutrients stalled rebound of marine life post-Permian extinction

Lack of nutrients stalled rebound of marine life post-Permian extinction | Biologie in de klas | Scoop.it
Warm sea surface temperatures slowed the nitrogen cycle in Earth’s oceans and delayed the recovery of life following the Permian extinction, researchers propose.
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Betty the crow may not have invented her hook-bending tool trick

Betty the crow may not have invented her hook-bending tool trick | Biologie in de klas | Scoop.it
Textbook example of Betty the crow’s proposed insight into toolmaking is now called into question by observations of similar hook bending by wild New Caledonian birds.
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Gift-giving brain cells are lifeline to injured nerve cells

Gift-giving brain cells are lifeline to injured nerve cells | Biologie in de klas | Scoop.it
After an injury, astrocytes give nerve cells a gift of mitochondria, mouse study suggests.
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Vanishing Act: What’s Causing Sharp Decline in Insects and Why It Matters by Christian Schwägerl: Yale Environment 360

Vanishing Act: What’s Causing Sharp Decline in Insects and Why It Matters by Christian Schwägerl: Yale Environment 360 | Biologie in de klas | Scoop.it
Insect populations are declining dramatically in many parts of the world, recent studies show.
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Hundreds of genes seen sparking to life two days after death

Hundreds of genes seen sparking to life two days after death | Biologie in de klas | Scoop.it
The discovery that many genes are still working up to 48 hours after death has implications for organ transplants, forensics and our very definition of death
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Hipster chicken beards caused by a single gene mutation

Hipster chicken beards caused by a single gene mutation | Biologie in de klas | Scoop.it
Now we know how a chicken gets its beard. The same set of genes may also control human hair patterns and how birds of paradise get their showy plumage
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Kan ik een leuke toetsvraag van maken.
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Orcas are first non-humans whose evolution is driven by culture

Orcas are first non-humans whose evolution is driven by culture | Biologie in de klas | Scoop.it
Genomes of 50 whales from different social niches reveal that their varying cultures are also genetically distinct
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Gene found that controls beak size in Darwin’s finches

Gene found that controls beak size in Darwin’s finches | Biologie in de klas | Scoop.it
A beak-size gene helped determine whether Darwin’s finches survived a drought.
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Horses can communicate with us - scientists - BBC News

Horses can communicate with us - scientists - BBC News | Biologie in de klas | Scoop.it
Horses have joined a select club of animals that can communicate by pointing to symbols, say scientists.
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Hoe lang mag voedsel op de grond liggen voor het besmet is met bacteriën?

Hoe lang mag voedsel op de grond liggen voor het besmet is met bacteriën? | Biologie in de klas | Scoop.it
De vijfsecondenregel kan definitief de prullenbak in, zo blijkt uit nieuw wetenschappelijk onderzoek.
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The Evolution of Bacteria on a “Mega-Plate” Petri Dish

In a creative stroke inspired by Hollywood wizardry, scientists have designed a simple way to observe how bacteria move as they become impervious to drugs
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Brain’s blood appetite grew faster than its size

Brain’s blood appetite grew faster than its size | Biologie in de klas | Scoop.it
Over evolutionary time, the energy demands of hominid brains increased faster than their volume, a new study finds.
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Monster slugs are devouring defenceless baby birds in nests

Monster slugs are devouring defenceless baby birds in nests | Biologie in de klas | Scoop.it
Nestlings are sitting ducks for giant slugs – some of them invasive ­– that have been recorded feeding on the chicks of several birds species
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Autoimmune diseases may be side effect of a strong immune system

Autoimmune diseases may be side effect of a strong immune system | Biologie in de klas | Scoop.it
We finally have evidence from human studies that disorders like lupus could be a by-product of being well protected against other diseases
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Frontiers | Sugar Consumption Produces Effects Similar to Early Life Stress Exposure on Hippocampal Markers of Neurogenesis and Stress Response | Frontiers in Molecular Neuroscience

Frontiers | Sugar Consumption Produces Effects Similar to Early Life Stress Exposure on Hippocampal Markers of Neurogenesis and Stress Response | Frontiers in Molecular Neuroscience | Biologie in de klas | Scoop.it
Adverse early life experience is a known risk factor for psychiatric disorders. It is also known that stress influences food preference. We were interested in exploring whether the choice of diet following early life stress exerts long-lasting molecular changes in the brain, particularly the hippocampus, a region critically involved in stress regulation and behavioural outcomes. Here, we examined the impact of early life stress induced by limited nesting material (LN) and chronic sucrose availability post-weaning on an array of hippocampal genes related to plasticity, neurogenesis, stress and inflammatory responses and mitochondrial biogenesis. To examine mechanisms underlying the impact of LN and sugar intake on hippocampal gene expression, we investigated the role of DNA methylation. As females are more likely to experience adverse life events, we studied female Sprague-Dawley rats. After mating LN was imposed from days 2-9 postpartum. From 3-15 weeks of age, female Control and LN siblings had unlimited to access to either chow and water, or chow, water and 25% sucrose solution. LN markedly reduced glucocorticoid receptor (GR) and neurogenic differentiation 1 (Neurod1) mRNA, markers involved in stress and hippocampal plasticity respectively, by more than 40%, with a similar effect of sugar intake in control rats. However, no further impact was observed in LN rats consuming sugar. Hippocampal Akt3 mRNA expression was similarly affected by LN and sucrose consumption. Interestingly, DNA methylation across 4 CpG sites of the GR and Neurod1 promoters was similar in LN and control rats. In summary, early life stress and post-weaning sugar intake produced long-term effects on hippocampal GR and Neurod1 expression. Moreover we found no evidence of altered promoter DNA methylation. We demonstrate for the first time that chronic sucrose consumption alone produces similar detrimental effects on the expression of hippocampal genes as LN exposure.
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Donor mitochondria could influence metabolism, aging

Donor mitochondria could influence metabolism, aging | Biologie in de klas | Scoop.it
Mitochondrial DNA donation could have unexpected long-term health consequences for “three-parent babies.”
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Wat zou je kunnen verbeteren aan de proefopzet om te onderzoeken of de invloed van vreemde mitochondria altijd positief is?
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New life form discovered in saliva is linked to human disease

New life form discovered in saliva is linked to human disease | Biologie in de klas | Scoop.it
Bacteria that parasitise other bacteria have been found for the first time, and are linked to gum disease, cystic fibrosis and antimicrobial resistance
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Niet-agrarisch gif veel slechter voor bijen

Niet-agrarisch gif veel slechter voor bijen | Biologie in de klas | Scoop.it
Bijen nemen meer chemicaliën op van buiten de landbouw dan via bloeiende gewassen, blijkt uit Amerikaans onderzoek.
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Titel is niet helemaal kloppend.
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For baby sea turtles, it helps to have a lot of siblings

For baby sea turtles, it helps to have a lot of siblings | Biologie in de klas | Scoop.it
After hatching, baby sea turtles must dig themselves out of their nest. This requires less energy if there are lots of siblings, a new study finds.
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Two studies find one gene for red beaks and feathers - BBC News

Two studies find one gene for red beaks and feathers - BBC News | Biologie in de klas | Scoop.it
Two independent scientific papers identify the same single gene as the cause of red beaks and feathers in birds.
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