When these reactions occur in living organisms such as bacteria, fireflies, squid and deep-sea fishes, the process is known as bioluminescence. At least two chemicals are required to make light. Chemists use the generic term luciferin to describe the one producing the light. They use the term...
Developmental Narratives: How We Think that Organisms Use Genetic and Epigenetic InformationBiological explanations of how genes work in our bodies, and how our bodies develop from their embryonic states, have implications for our self-understanding. Are our bodies essentially products of our genes, ...
These trees aren’t just old; they’re some of the largest living organisms on the planet. Bonsai and Tray Planting: Miniature Trees With Big Science Bonsai tree. krisanapong detraphiphat / Getty Images Bonsai practice focuses on cultivating small trees with carefully shaped growth forms. ...
The large intestine, then, must be able to play nicely with the helpful organisms while not allowing harmful ones to take over, all while absorbing water and nutrients before what remains in the chyme is lost as waste. And if that’s not enough, the entire digestive tract must coordinate ...
Describe major functions of the nervous system in maintaining homeostasis. How do unicellular organisms maintain homeostasis for survival? What is homeostasis? Explain briefly. Discuss the concept of homeostasis, and point out how this is maintained in the body and the inter-relatedness of all the ...
Current space-farming experiments examine different aspects of farming inmicrogravity(a term to describe an environment with little or nogravity). These experiments could be helpful in the related case of farming on the surface of themoonorMars, which have significantly lower levels of gravity than...
Student: Um, I thought it's when two organisms are in a relationship that they both benefit from. Well, at least that's what I thought it was until I did the reading last night. Now, I am kind of confused about it, because the book used that definition to describe mutualism. ...
Describe how genetic mutations lead to genetic variation and allele interactions. Define 'mutation' and explain any advantages and disadvantages of its occurrence in living organisms. Describe the significance for epidemiology for the following historical developmen...
Niche-construction theory is a branch of evolutionary biology that emphasizes the capacity of organisms to modify natural selection and thereby act as co-directors of their own, and other species', evolution. Humans are the ultimate niche-constructing species. We specify how variation in buffering ...
How do you get started DIY composting? Here are some pretty nifty tips to have the most successful compost pile: Start on bare earth.This allows organisms from the ground (like worms and bacteria) to access the soil and begin doing their part of the process. ...