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2
votes
1answer
106 views

Why do humans stop growing? [closed]

Humans stop growing after reaching a certain height, right? Could you explain the reason, why humans stop growing? Many people say that people stop growing around the age of 21-25, so for what exact ...
5
votes
1answer
39 views

Total dark deprivation at day-neutral plants

First of all, I am not a biologist. Almost for a week, a question has come to my mind: "Is it harmful ceaselessly exposing a plant to light?" (I mean with natural & artificial light with ...
4
votes
1answer
93 views

How does aging affect fingerprint?

Do fingerprints change as we grow from child to adult? Most notably, what is the effect of the increase in surface area of palms and fingers on the finger print? Does the finger print simply increases ...
3
votes
0answers
39 views

Can we artificially increase human growth using HGH?

Robert Pershing Wadlow was a man who lived in the early-mid 1900s and had hyperplasia of his pituitary gland, which caused him over-produce human growth hormone (HGH) and grow to nearly 9 feet ...
1
vote
1answer
60 views

Pituitary giants - is the fusing of growth plates dependent on amount of growth hormone in blood?

I wanted to ask a couple questions related to pituitary giants (people who are giants because of some anomaly, such as a tumor, in their pituitary gland). Some of these giants seem to keep growing ...
5
votes
2answers
83 views

If higher levels of atmospheric oxygen can lead to larger animals, can it also lead to larger plants?

According to some information, in the ancient past (at least some) animals grew larger due to a higher levels of oxygen in the atmosphere. So for example there is this study regarding dragonflies. ...
5
votes
1answer
48 views

Do people grow shorter as they age, how common is it, and what triggers it?

Is it true that people become gradually shorter as they age? If it is, is it more common in one gender than the other? And is it known what triggers this? (Considering that the "shortening" probably ...
4
votes
1answer
92 views

Circulating factors affecting human health/longevity

Circulating factors present in young mice have been shown to promote rejuvenation of aged mice, suggesting that tissues have inherent capabilities to regenerate, and circulating factors may be ...
-2
votes
1answer
78 views

Bigger animals needs bigger amount of oxygen?

Bigger animals, like Elephants, or Dinosaurs for example, are in need for more oxygen than the amount of oxygen that small animals need? (humans, dogs, cats, etc) Thanks in advance.
1
vote
0answers
71 views

Is it possible to simulate the effects of high altitudes for plants?

Note- I considered asking this on gardening.stackexchange.com but i believe it is better suited for this site since it deals with more complicated material. As I understand it, certain plants ...
4
votes
1answer
34 views

Which C. elegans would be appropriate for general study?

Would wild type N2 be best or Dyp-11? I know they're different, but I just want to observe the worms to see life stages, movement, etc. Dyp-11 seems like it would be easy to see but N2 is the wild ...
1
vote
1answer
132 views

What is the fastest growing bacterium?

E. coli has a generation time of about 20 min, and a single CFU will generate a colony a few millimeters in diameter after 16 hours of incubation. Is this the upper limit? How much faster can ...
5
votes
1answer
78 views

Scale up of Bacterial growth from 250mL to 1-5L?

I am currently growing up a specific strain of E.Coli with a knockout in 40mL of growth medium (LB) in a 250mL shaker flask... My ultimate goal is to scale up this process to a 1-5L large scale setup ...
2
votes
0answers
33 views

Genetically improved *Leucaena leucocephala* seeds

I am looking for fast growing Leucaena leucocephala seeds. Now, I am cultivating Leucaena leucocephala which can grow 6 meters in a year. But I am looking for a genetically improved seed which can ...
2
votes
1answer
55 views

How do mushrooms react to being grown in a microgravity environment?

I'll use Agaricus Bisporus as an example mushroom. If cultured in potato dextrose yeast extract agar, will the resulting growth grow in a normal pattern? Will the sporocarps emerge from the surface ...
0
votes
2answers
29 views

Is process, opposite for growth, known for mammals?

Every animal born small, then grow larger and larger. The same is true for parts of the animal bodies. Is there any cases, when body or part of the body diminishes in size and mass, while staying ...
5
votes
1answer
87 views

With an excess supply of nutrients, in how much time will the number of algae cells double in full sun?

I am growing algae in a container in my roof. It gets sunlight for the whole day as there are no clouds nowadays in my area. There is no lack of nutrients as I am constantly adding water mixed with ...
17
votes
1answer
2k views

Do insects' muscles become stronger with exercise?

I am curious to know if insect muscles become stronger with exercise, because I have seen many insects get tired out, but I have never seen one get stronger. They always seem to become permanently ...