Your Answer is Proteins! Please consider brainliesting me!
Answer:
1) True
Explanation:
Cells of Sinoatrial (SA) node make up the auto rhythmic cells of heart as in normal physiological conditions , SA-node is responsible to set the pace of the rest of the heart (pacemaker) at a rate of 70 to 80 beats per minute.
The cells of SA node has the ability to self-excite thus able to generate action potential without external stimulation by nerve cells. Thus they initiate the cardiac cycle providing the conduction system.
Hence the statement , SA nodal cells are unique in that they exhibit autorhythmicity, meaning they are capable of depolarizing and firing an action potential spontaneously without any external influence, is true.
The great white shark is about 4.5 meters in length, but some can be as large as 6 meters. They weigh about 2250 kilograms. The top part of their bodies are usually blue-gray in colour. Great white sharks can reach a speed of up to 25 kilometers per hour. They search for food near the surface of the ocean. They stay below deep in the water where they are well hidden.
Hope it helps!
Can you please choose mine as the brainliest answer.
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
The sun, earth, and moon are held together by gravity, and they interact in lots of ways. The moon orbits the earth because of the pull of the earth. The tides are another interaction in the sun, earth, and the moon system. The tides happen because the moon and sun pull on the oceans, causing them to rise and fall each day.
Answer:
Biotic:
- Bear
- Moose
- Trees
- Eagle
- Bird
- Fish
- Ducks
- Otter
- Ferns
- Grass
- Butterfly
Abiotic:
Explanation:
Remember that biotic factors are living organisms while abiotic factors are things that are non living organisms.
Hope this helps.
