![subject](/tpl/images/cats/biologiya.png)
The heart is important for transporting oxygen to the muscles when we exercise. How does the heart rate change when we go from sitting on a chair to running up the stairs?
A. The heart rate stops.
B. The heart rate gets slower.
C. The heart rate gets faster.
D. The heart rate stays the same.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 21:00
Both carbohydrates and fats are used as fuel in cells. true or false
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 21:30
At what point in the eukaryotic cell cycle does mitosis occur
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 23.06.2019 08:50
Some jellyfish have skeletons that are formed by fluid-filled compartments. this fluid resists compression and thus supports the body structure from deforming. which term describes these skeletons? a. fluid skeletons b. hydrostatic skeletons c. exoskeleton d. endoskeleton
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 23.06.2019 12:40
An experiment was done to determine if grass will grow taller if it is water weekly than grass that is not watered. what is the dependent variable
Answers: 1
You know the right answer?
The heart is important for transporting oxygen to the muscles when we exercise. How does the heart r...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 19.01.2021 22:30
![question](/tpl/images/cats/en.png)
English, 19.01.2021 22:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 19.01.2021 22:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 19.01.2021 22:30
![question](/tpl/images/cats/mat.png)
Mathematics, 19.01.2021 22:30
![question](/tpl/images/cats/mat.png)
Mathematics, 19.01.2021 22:30
![question](/tpl/images/cats/istoriya.png)
History, 19.01.2021 22:30
![question](/tpl/images/cats/mkx.png)
Arts, 19.01.2021 22:30
![question](/tpl/images/cats/mat.png)
Mathematics, 19.01.2021 22:30
![question](/tpl/images/cats/ekonomika.png)
Business, 19.01.2021 22:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 19.01.2021 22:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 19.01.2021 22:30