What color is octopus blood?

red
blue
green
yellow
Both squids and oc­to­pus­es have blue blood. They use an oxy­gen-­car­ry­ing molecule in their blood called hemo­cyanin that contains copper. In cold con­di­tions with low oxygen pres­sure, hemo­cyanin oxygen trans­porta­tion is more ef­fi­cient than he­mo­glo­bin oxygen trans­porta­tion.

Answers distribution

red
blue
green
yellow
answers
flagUkraine
0%
95%
4%
0%
23
flagRepublic of Ireland
1%
84%
6%
6%
58
flagGermany
7%
83%
4%
4%
224
flagthe United Arab Emirates
4%
80%
8%
8%
25
flagPoland
8%
79%
5%
4%
21275
flagCanada
5%
79%
10%
4%
73
flagthe United Kingdom
8%
78%
7%
3%
610
flagUnknown
9%
77%
8%
3%
776
flagFrance
12%
75%
5%
5%
40
flagItaly
8%
75%
5%
11%
36
flagthe United States
8%
72%
12%
5%
1156
flagIndia
6%
72%
13%
5%
463
flagMalaysia
7%
71%
17%
2%
39
flagthe Netherlands
12%
70%
9%
6%
62
flagAustralia
14%
70%
11%
3%
61
flagthe Philippines
10%
70%
14%
1%
55
flagNorway
9%
66%
11%
11%
54
flagSpain
17%
64%
7%
3%
28
flagNigeria
8%
58%
16%
4%
24
flagPakistan
20%
50%
18%
6%
44

Gender

men78%
women81%
red
8%
7%
blue
78%
81%
green
8%
5%
yellow
4%
4%

Language versions

question
answers
results
flag
What color is octopus blood?
2605
71%

Details

Author: Kasia
tools
Should this question be improved? Improve it.
Globalquiz questions are translated by users for other users. Translate this question.