User uhoh

36 votes

2 answers

3k views

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

asked Mar 26, 2017 at 11:17

34 votes

2 answers

10k views

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

photosynthesis

asked Apr 4, 2019 at 6:33

26 votes

1 answer

3k views

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

entomology predation

asked Sep 24, 2017 at 6:52

20 votes

1 answer

3k views

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

muscles bio-mechanics dinosaurs

asked Aug 10, 2017 at 11:09

17 votes

2 answers

1k views

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

botany plant-physiology photosynthesis light

asked Apr 18, 2017 at 15:18

17 votes

1 answer

3k views

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

species-identification entomology behaviour

asked Mar 24, 2020 at 3:01

15 votes

1 answer

12k views

Can plants produce oxygen at night (without light)?

biochemistry plant-physiology photosynthesis

asked Apr 18, 2017 at 13:25

12 votes

2 answers

482 views

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

entomology metabolism biophysics arachnology energy-metabolism

asked Jan 26, 2019 at 4:11

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

asked Nov 12, 2020 at 5:54

12 votes

0 answers

175 views

Is it known how some heat-resistance Bacillus spores repair their DNA after having been heated to 420 °C? (but not much higher)

bacteriology heat extremophiles

asked Jul 29, 2021 at 22:43

12 votes

1 answer

2k views

Will proper autoclave treatment really "inactivate all resistant bacterial spores"? If not, how widespread are autoclave-resistant bacterial spores?

bacteriology heat sterilisation autoclave

asked Aug 4, 2021 at 23:49

11 votes

0 answers

2k views

What is, (and what isn't) "kinetic replication" as it applies to molecules and to living organisms?

molecular-biology terminology dna-replication

asked Nov 30, 2021 at 0:57

10 votes

2 answers

5k views

How exactly does alcohol solution kill or neutralize viruses?

virology epidemiology sterilisation

asked Feb 2, 2020 at 0:42

10 votes

1 answer

829 views

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

species-identification trees morphology

asked Nov 11, 2017 at 10:05

9 votes

1 answer

282 views

What are the sources of molecular hydrogen in human breath?

biochemistry respiration breathing

asked Jan 6, 2019 at 3:07

9 votes

1 answer

291 views

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

species-identification botany fruit

asked Sep 18, 2019 at 3:33

8 votes

2 answers

442 views

What are these four large snails doing?

behaviour gastropod

asked Jul 1, 2018 at 15:57

8 votes

2 answers

485 views

Why do OX5034 GM mosquitos require the presence of tetracycline to survive? What does the drug do in this case?

molecular-biology reproduction infectious-diseases pest-control

asked Apr 30, 2021 at 18:29

8 votes

0 answers

90 views

How much is known about dinosaur DNA condensation and crosslinking?

dna chromosome dinosaurs chromatin

asked Mar 15 at 23:06

7 votes

1 answer

834 views

Novel bacterial strains of bacteria first isolated on the International Space Station, did the space environment lead to these genetic changes?

genetics bacteriology species selection artificial-selection

asked May 11, 2021 at 22:41

7 votes

1 answer

165 views

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

entomology eyes anatomy morphology

asked Sep 21, 2020 at 11:55

7 votes

1 answer

208 views

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

senses herpetology predation

asked Dec 30, 2020 at 12:50

7 votes

1 answer

556 views

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

species-identification ornithology

asked Jun 14, 2018 at 10:07

7 votes

4 answers

331 views

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

biochemistry dna dna-sequencing safety

asked Jul 12, 2017 at 21:27

7 votes

1 answer

986 views

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

genetics botany mutations variant

asked Mar 31, 2017 at 8:39

6 votes

2 answers

432 views

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

biochemistry bacteriology chemosynthesis

asked Feb 24, 2017 at 4:30

6 votes

1 answer

106 views

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

entomology statistics data infectious-diseases

asked Apr 29, 2017 at 10:49

6 votes

1 answer

170 views

Is this a hawk, or an eagle?

species-identification ornithology

asked Jul 1, 2018 at 16:21

6 votes

0 answers

255 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

asked Aug 25, 2018 at 8:59

6 votes

2 answers

9k views

What causes "ear rumbling"?

physiology hearing human-ear

asked Jan 10, 2019 at 0:30

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117 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?

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

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

Can plants produce oxygen at night (without light)?

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

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

Is it known how some heat-resistance Bacillus spores repair their DNA after having been heated to 420 °C? (but not much higher)

Will proper autoclave treatment really "inactivate all resistant bacterial spores"? If not, how widespread are autoclave-resistant bacterial spores?

What is, (and what isn't) "kinetic replication" as it applies to molecules and to living organisms?

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"?

What are the sources of molecular hydrogen in human breath?

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

What are these four large snails doing?

Why do OX5034 GM mosquitos require the presence of tetracycline to survive? What does the drug do in this case?

How much is known about dinosaur DNA condensation and crosslinking?

Novel bacterial strains of bacteria first isolated on the International Space Station, did the space environment lead to these genetic changes?

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

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

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

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

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?

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

Is this a hawk, or an eagle?

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"?