![subject](/tpl/images/cats/biologiya.png)
Biology, 06.11.2020 06:20 carrillo4444
Why is a countercurrent system a more efficient system for gas exchange?
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 23:00
Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.
Answers: 3
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 03:30
When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 06:30
Aplant may open end close its stomata to prevent excess water loss and maintain
Answers: 1
![question](/tpl/images/cats/biologiya.png)
You know the right answer?
Why is a countercurrent system a more efficient system for gas exchange?...
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 27.06.2019 18:00
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/en.png)
English, 27.06.2019 18:00
![question](/tpl/images/cats/en.png)
English, 27.06.2019 18:00
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 27.06.2019 18:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 27.06.2019 18:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 27.06.2019 18:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)