The toad ventricular muscle was electrically stimulated at a frequency 0.5 Hz. What was the rate of contractions (please show your calculations and provide units)? (2 marks)​

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

The first amino acid of a new polypeptide chain is