Biology College

Which atom is involved in giving your heart energy to beat?
O carbon
O gold
O oxygen
O iron​

Answers

Answer 1

Answer:

Oxygen

Explanation:

-How fast the heart beats depends on the body's need for oxygen-rich blood. At rest, the SA node causes your heart to beat about 50 to 100 times each minute. During activity or excitement, your body needs more oxygen-rich blood; the heart rate rises to well over 100 beats per minute.

-The heart, like any organ, requires blood for oxygen and other nutrients so it can do its work. The heart does not gather oxygen or nutrients from the blood flowing inside it. Instead, it receives blood from coronary arteries that eventually carry blood into the heart muscle.

Related Questions

PLEASE ANSWER.

Purple is dominant to white. A flower with the alleles PP (purple) is
crossed with a flower with alleles pp (white). What is the percent chance
that their offspring (babies) will be purple?

0%
50%
100%

Answers

Answer:

100% P is dominate there for all matches will be Pp this mean it will either be purple or a mixture of both (pink)

Explanation:

the chances will be 100% Purple flowers

Two cell organelles are described below.

Organelle A: Present in plant cells but not present in animal cells
Organelle B: Much larger in size in plant cells than in animal cells

Which of the following is most likely correct?

Answers

Answer:

Organelle A is chloroplasts

Organelle B is the vacuole

Explanation:

I don’t exactly understand what it means on which one is correct, but I hope this helps you.

Fossil fuels, such as oil and natural gas, are primarily formed from the remains of what?
phytoplankton
mammals
bacteria
dinosaurs​

Answers

Answer:

phytoplankton

Explanation:

Answer:

Its phytoplankten.

Explanation:

I hope I spelled it right

Other Questions
1. How does the human body respond to exercise? A standard train ticket in a certain city costs $1.50 per ride. People who use the train also have the option of purchasing a frequent rider pass for $17.25 per month. With the pass, a ticket costs only $0.75 per ride. How many train rides a month make the frequent rider pass a better deal than standard train tickets? Anyone please please answer (30points) Your high school freshman class consists of 760 students. In recent years, only 4 out of 7 students actually graduated in four years. Approximately how many of your classmates are expected to graduate in four years?a.190 studentsb.760 studentsc.434 studentsd.1330 students A cookie recipe calls for 1/4 cup of brown sugar for one batch of 24 cookies. How many cups of brown sugar would be needed to bake 144 cookies?Group of answer choices2/31 1/41 1/21 2/3 what principle of design is used in the weeping woman A park is rectangular with a length of 2/3 miles. If the area of the park is 3/9 square miles, what is its width? Input your answer as a fraction. Tell whether the ordered pair (-4,-2) is a solution of the system of linear equations.Y= 2x+6Y= -3x-14 Read this introduction to an argumentative essay about government. An effective system of government protects its citizens. The purpose of government is to ensure the safety of the nation and its residents. While other concerns such as economic growth are important, a governments primary duty is to keep its people safe. Without the concern of defense or self-protection, individuals are able to live in security. Which sentence states the main argument of the essay? How was louis xvi an outstanding example of absolutism? What is the value of x? B 75 Enter your answer in the box. X= With the Nile River playing a major role in the lives of the Egyptians, building ______ was an important part of their technology. papershipspyramidscoffee mugs*Ten Points. The least count of stopwatch is 0.2s.The time of 20 oscillations of a pendulum was measured to be 25s.Find the percentage error in the measurement of time La madrastra norteamericana de Paulo y Ral visita hoy a sus hijos en el departamento de sus abuelos. Hoy es el cumpleaos de Paulo y Ral; ellos son gemelos. La madrastra cocina papas con pollo para la celebracin.What country is the text referring to? Puerto Rico Canad Estados Unidos Espaa The narrators felicity comes to an end the moment his cat disappears. Which expression is equivalent to 12(4m2n+4)?1.2mn+22.2m2n+43.8m4n+44.8m4n+8 Percent is always out of _________ ? Which statement reveals a change in Creon's character?you won't change my mind to make yourself more rich.The tribe of prophets-all of them-are fond of money.You're a wise prophet,/but you love doing wrong.Until one dies the best thing well may be to follow our established laws. x+2+2x+1+x-6= 45 what is X?12601516SOLVE QUICKLY I WILL GIVE BRAINIEST!!! PLEASE ANSWER.Purple is dominant to white. A flower with the alleles PP (purple) iscrossed with a flower with alleles pp (white). What is the percent chancethat their offspring (babies) will be purple? 0%50%100%