User uhoh

6

36

votes

2

answers

3k

views

Is C. elegans always observed with precisely 302 neurons? Are there ever individual viable exceptions?

May 25 '18 at 0:26 tsttst 1,317

3

35

votes

2

answers

10k

views

Why “Having chlorophyll without photosynthesis is actually very dangerous” and “like living with a bomb”?

photosynthesis

Sep 9 '19 at 16:56 Community♦ 1

4

26

votes

1

answer

3k

views

Bird brain-eating Mantis - how does it crack the skull?

entomology predation

Jan 27 '20 at 9:26 Community♦ 1

4

20

votes

1

answer

3k

views

How did the largest/longest dinosaurs hold their head and necks up?

muscles bio-mechanics dinosaurs

Aug 10 '17 at 18:08 iayork 13.8k

3

17

votes

1

answer

3k

views

Identify this giant green moth(?) with great taste?

species-identification entomology behaviour

Mar 24 '20 at 4:04 tyersome 4,376

4

15

votes

2

answers

843

views

Are two colors (red + blue) necessary for LED grow lights, or would either color be sufficient?

botany plant-physiology photosynthesis light

Feb 16 at 6:50 Hachiloni 870

2

14

votes

1

answer

11k

views

Can plants produce oxygen at night (without light)?

biochemistry plant-physiology photosynthesis

May 9 '18 at 8:24 Community♦ 1

1

12

votes

4

answers

2k

views

Are bleach solutions still routinely used in biochemistry laboratories to rid surfaces of bacteria, viruses, certain enzymes, and nucleic acids?

lab-techniques

Nov 13 at 22:47 uhoh 4,344

2

11

votes

2

answers

286

views

How much energy does a small spider expend per day just waiting for its web to vibrate?

entomology metabolism biophysics arachnology energy-metabolism

Apr 1 '20 at 21:51 aliential 7,772

1

10

votes

2

answers

5k

views

How exactly does alcohol solution kill or neutralize viruses?

virology epidemiology sterilisation

Mar 31 '20 at 21:54 Community♦ 1

10

votes

1

answer

660

views

What kind of tree is this — why do its huge leaves change shape and “grow fingers”?

species-identification trees morphology

Dec 11 '17 at 18:26 Community♦ 1

9

votes

1

answer

230

views

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

species-identification botany fruit

Sep 19 '19 at 17:16 Bryan Hanson 1,319

9

votes

1

answer

254

views

What are the sources of molecular hydrogen in human breath?

biochemistry respiration breathing

Mar 25 '19 at 11:30 Community♦ 1

8

votes

2

answers

363

views

What are these four large snails doing?

behaviour gastropod

Mar 11 '19 at 15:22 Triceratops 906

7

votes

1

answer

190

views

How do snakes determine the direction of prey from their thermal infrared sensing pit organs?

senses herpetology predation

Dec 30 at 18:59 Bryan Krause♦ 28.5k

7

votes

1

answer

103

views

Why exactly are the reflections of sunlight in this dragonfly's eye hexagonal?

entomology eyes anatomy morphology

Sep 24 at 8:36 aliential 7,772

7

votes

4

answers

314

views

DNA as a digital storage medium; sequences algorithmically avoided for safety reasons (or should be)?

biochemistry dna dna-sequencing safety

Apr 28 '20 at 14:27 Alex Reynolds 5,446

7

votes

1

answer

388

views

What kind of big bird is this seen walking around Taipei?

species-identification ornithology

Jun 14 '18 at 14:12 Johnny 1,429

6

votes

0

answers

233

views

Could being exposed to excess UV in the arctic lead to a human eye color change? If so, what is the mechanism?

human-eye uv melanin

Jan 19 '20 at 6:23 Kathy B 1

2

6

votes

2

answers

9k

views

What causes “ear rumbling”?

physiology hearing human-ear

Aug 10 '19 at 1:46 Community♦ 1

2

6

votes

1

answer

228

views

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

molecular-biology radiation telomere

Apr 19 '19 at 1:49 Community♦ 1

6

votes

1

answer

139

views

Is this a hawk, or an eagle?

species-identification ornithology

Jul 4 '18 at 13:51 Community♦ 1

1

6

votes

1

answer

105

views

Don't understand figures in this citizen-science mosquito ID project

entomology statistics data infectious-diseases

May 19 '17 at 0:15 Community♦ 1

6

votes

1

answer

896

views

Are four-leaf clovers mutations, developmental errors, or something more complicated?

genetics botany mutations variant

Mar 31 '17 at 14:46 uhoh 4,344

3

6

votes

2

answers

405

views

Bacteria trapped in crystal inclusions found 'alive' after 50,000 years - what were they eating all that time?

biochemistry bacteriology chemosynthesis

Feb 25 '17 at 9:41 another 'Homo sapien' 13.8k

5

votes

3

answers

559

views

Identify this black dragonfly with a bright bluish-white band around its body

species-identification zoology entomology

Aug 15 at 8:23 uhoh 4,344

5

votes

1

answer

165

views

Why do dragonflies lose all of their coloration once they die?

zoology entomology pigmentation

Aug 14 at 20:02 tyersome 4,376

5

votes

2

answers

356

views

Identify this large, beige or pine cone-colored squareish beetle and/or the pine cone it's on?

species-identification entomology invasive-species

May 24 at 7:37 Praearcturus 371

1

5

votes

1

answer

4k

views

Species identification; clusters of big plump red bugs in Taipei

species-identification zoology entomology

Sep 18 '19 at 20:16 theforestecologist♦ 23.3k

5

votes

2

answers

263

views

Melatonin production, sleep, and “cyan light”; how might this finding be possible?

human-biology neuroscience vision sleep color

Aug 3 '18 at 20:12 Community♦ 1

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101 Questions

Is C. elegans always observed with precisely 302 neurons? Are there ever individual viable exceptions?

Why “Having chlorophyll without photosynthesis is actually very dangerous” and “like living with a bomb”?

Bird brain-eating Mantis - how does it crack the skull?

How did the largest/longest dinosaurs hold their head and necks up?

Identify this giant green moth(?) with great taste?

Are two colors (red + blue) necessary for LED grow lights, or would either color be sufficient?

Can plants produce oxygen at night (without light)?

Are bleach solutions still routinely used in biochemistry laboratories to rid surfaces of bacteria, viruses, certain enzymes, and nucleic acids?

How much energy does a small spider expend per day just waiting for its web to vibrate?

How exactly does alcohol solution kill or neutralize viruses?

What kind of tree is this — why do its huge leaves change shape and “grow fingers”?

Identify this unusually-shaped, orange-colored fruit that grows in pairs?

What are the sources of molecular hydrogen in human breath?

What are these four large snails doing?

How do snakes determine the direction of prey from their thermal infrared sensing pit organs?

Why exactly are the reflections of sunlight in this dragonfly's eye hexagonal?

DNA as a digital storage medium; sequences algorithmically avoided for safety reasons (or should be)?

What kind of big bird is this seen walking around Taipei?

Could being exposed to excess UV in the arctic lead to a human eye color change? If so, what is the mechanism?

What causes “ear rumbling”?

Why did they expect Astronaut Scott Kelley's telomere shortening to accelerate? (they got longer!)

Is this a hawk, or an eagle?

Don't understand figures in this citizen-science mosquito ID project

Are four-leaf clovers mutations, developmental errors, or something more complicated?

Bacteria trapped in crystal inclusions found 'alive' after 50,000 years - what were they eating all that time?

Identify this black dragonfly with a bright bluish-white band around its body

Why do dragonflies lose all of their coloration once they die?

Identify this large, beige or pine cone-colored squareish beetle and/or the pine cone it's on?

Species identification; clusters of big plump red bugs in Taipei

Melatonin production, sleep, and “cyan light”; how might this finding be possible?