Can someone help me if an astronaut has mass 100 kilometers , what is his weight on earth where his acceleration due to gravity is 9.8m/s2

The cluster of developing cells from conception until birth is called an

Identify the area on the image where the force of attraction is the strongest.

Which of the following statements is true regarding a basic amino acid? a.) the hydrophilic r group of a basic amino acid will be located on the interior of a protein b.) the positively charged r group of a basic amino acid could bind dna c.) the r group of a basic amino acid would only be able to form covalent bonds with other molecules d.) a basic amino acid would be considered both polar and hydrophobic e.) all of the above