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
flagRepublic of Ireland
0%
84%
7%
7%
53
flagDenmark
13%
82%
0%
4%
23
flagGermany
7%
81%
4%
5%
194
flagCanada
4%
80%
10%
4%
66
flagFrance
8%
80%
5%
2%
35
flagPoland
8%
79%
6%
4%
16907
flagthe United Arab Emirates
4%
78%
8%
8%
23
flagSingapore
10%
78%
10%
0%
19
flagthe United Kingdom
9%
77%
7%
3%
526
flagIndia
5%
73%
13%
5%
401
flagthe United States
8%
71%
12%
5%
1073
flagItaly
9%
71%
6%
12%
32
flagthe Netherlands
14%
70%
8%
7%
57
flagthe Philippines
12%
70%
12%
2%
48
flagAustralia
16%
68%
12%
1%
54
flagMalaysia
10%
68%
17%
3%
29
flagUnknown
14%
65%
14%
4%
61
flagNorway
10%
63%
12%
12%
49
flagSpain
19%
61%
7%
3%
26
flagPakistan
17%
48%
20%
7%
39

Gender

men79%
women81%
red
7%
7%
blue
79%
81%
green
7%
6%
yellow
5%
4%

Language versions

question
answers
results
flag
What color is octopus blood?
2316
71%

Details

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