Cardiac muscle contracts a. in response to voluntary output b in response to nonvoluntary input c. on its own without input

How many cells are our body made of ? ♡

In what part of the body does the most muscle activity happen?

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals