crowforecast asked: If chloroplasts are the pigment which makes plants green why are some plants not green? Is there a different sort of chloroplast?
Chlorophyll, which is is the chemical found within chloroplasts in plants, is indeed the pigment which gives plants their green colour. However, it’s not the only chemical compound that can influence the colour of the plant.
One family of compounds that can cause colour are the carotenoids. These include carotene (yellow/orange), shown below, which is found in carrots, and also contributes to the yellow colour of autumn leaves.
Another class of compounds that can influence colour are the flavonoids. Anthocyanins are a member of this class of compound, whose colour can be red, purple or blue. Blueberries, cranberries and raspberries all get their colouration from anthocyanins. They also cause the red colour of autumn leaves.
A third family of compounds is the betalains. These come in two subgroups: betacyanin (red/violet) and betaxanthin (yellow/orange). They occur in fewer plant families, but in particular are responsible for the deep red colouration of beetroot. Betalains always occur in the place of anthocyanins, and it isn’t possible to find both in the same plant.
Hope that answers your question!
arcticwarfarepolizei asked: Is there any hormone that gives rise to feeling of 'love'?
If you wanted to stick a big ‘love’ label on a hormone, then you’d plump for the hormone oxytocin:
However, like the majority of hormones & neurotransmitters in the body, it’s effects are much wider ranging than just the one role. For example, as well as being involved in sexual arousal, oxytocin stimulates contractions in the uterus prior to women giving birth (it’s actually given as a drug to induce labour), and it also has an impact on feelings of trust and generosity.
You can read a little more about it here.
if capitalism is so voluntary, why does america have to keep using the cia to make sure other countries keep it?
If the free market naturally corrects problems, why do we have to give subsidies to large business interests and bail out banks?
If capitalism ensures that those that work the hardest make the most money, why doesn’t a coal miner make as much as a CEO?