Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
The heart cells must be able to continue aerobic metabolism when skeletal muscle cannot. Aerobic metabolism is a part of cellular respiration and involves body cells making energy through glycolysis, the citric acid cycle, and the electron transport/oxidative. It is done in the heart at a rate below 85% of maximum heart rate and does not use vigorous muscle contraction. fatty acids , ketone bodies and carbohydrates are the primary substrates of the heart metabolized to generate ATP. The metabolic demands of the heart are the largest than any other organ in the body, and normal cardiac metabolism is required to fuel contractile function and viability.
Answer:
I am pretty sure you are asking for the correct words which for living is biotic and for non living it is Abiotic
Explanation:
Answer:
As objects move around over time, the energy associated with them—e.g., kinetic, gravitational potential, heat—might change forms, but if energy is conserved, then the total will remain the same. Conservation of energy applies only to isolated systems.
Explanation:
chemical energy = 3
mechanical energy = 5
heat = 4
gravitational energy = 1
light = 6
nuclear energy = 2
I had the same question, and this is what I did.
