6

HeLa cells themselves are not pigmented, and usually appear translucent/gray under light microscopy. The growth medium may however be colored, and a common color is magenta. The tumors themselves will appear purple, as most tumors do, due to the broken vascularization. Tumors commonly secrete growth factors leading to angiogenesis, but the resulting vessel ...


4

How about non-target cells? I found several examples of that usage including: A book section titled: 9.3 How are steroid hormone target cells differentiated from non-target cells?1 Containing the following line: Thus, estrogen will stimulate mRNA and protein synthesis in a target cell, but not in a non-target cell. A book chapter titled: Target or non-...


3

This is because of the difference in mitochondrial protein expression of red and white muscle fibres. There is difference in posttranslational modification, which leads to functional difference as red muscle contraction is slow, and white muscle contraction is rapid. Metabolic control in mitochondria contributes in speed of activity and cellular energy ...


3

In general, a grown up man will have a voice with a lower pitch than when he was an adolescent (Cleveland Clinic). The pitch height basically depends on the length of the vocal cords. According to Wikipedia: Adult male voices are usually lower-pitched and have larger folds. The male vocal folds...are between 17 mm and 25 mm in length. The female vocal ...


2

I hate to sound rude, but you could easily answer this yourself with even the most minimal look into well-tabulated demographic information, rather than highly non-representative observations. About 13% of Japan's population is 0-14 years old, the third lowest fraction in the world. (https://data.worldbank.org/indicator/SP.POP.0014.TO.ZS ; easy to find with ...


2

Caffeine and coffee do not seem to have any significant adverse effect on calcium metabolism. The supposed mechanisms are inhibition of calcium absorption in the intestine and stimulation of calcium excretion in the kidneys. Effects of caffeine on bone and the calcium economy (Food and Chemical Toxicology, Journal, 2002): Caffeine-containing beverage ...


2

Compared to their body weight, humans don't really eat that much Where I live, the typical serving at a restaurant is 150g or 200g of meat, plus about the same amount of side dish. Even if your test subject is a big eater, that's just 300 + ~200g of biomass. Eating that much food without drinking is difficult, so you allow your subject one beer, or about ...


1

To make a proper evaluation of the immediate effect of food on your weight you need to: Have a sensitive (optimally: digital) and properly working scale that shows the same value when you weigh yourself few times in a row Wear the same clothes during the pre- and post-meal measurement Not vomit, urinate, defecate or sweat significantly between the 2 ...


1

Actually an ovum doesn't ever start cell division because once it is fertilized by a sperm the combination of the two cells is call a zygote. In humans, the zygote proceeds with the many steps following fertilization leading to the first division; this takes on the order of 24 to 30 hours. At that point the set of cells may be termed an embryo or various ...


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