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%
93%
6%
0%
16
flagRepublic of Ireland
0%
84%
7%
7%
52
flagGermany
7%
82%
3%
5%
179
flagDenmark
13%
82%
0%
4%
23
flagPoland
9%
79%
6%
4%
15746
flagthe United Arab Emirates
5%
78%
5%
10%
19
flagCanada
5%
77%
12%
5%
57
flagthe United Kingdom
9%
76%
8%
3%
474
flagFrance
10%
75%
6%
3%
29
flagIndia
4%
74%
12%
6%
366
flagthe United States
8%
71%
12%
5%
1012
flagItaly
7%
71%
7%
14%
28
flagthe Netherlands
14%
70%
9%
5%
54
flagthe Philippines
13%
70%
11%
2%
44
flagAustralia
18%
68%
14%
0%
50
flagSweden
12%
68%
12%
6%
16
flagMalaysia
10%
67%
17%
3%
28
flagNorway
10%
63%
12%
12%
49
flagSpain
20%
62%
8%
4%
24
flagPakistan
18%
47%
21%
7%
38

Gender

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

Language versions

question
answers
results
flag
What color is octopus blood?
2166
71%

Details

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