biochemistry is the branch of science concerned with the chemical cocerned
A weighing boat is an open container often used in chemistry and biochemisrty. It is used if you want to weigh a sample very accurately.
realistically,yes. Obviously, biology is essential. It is necessary to understand biochemisrty and so chemistry is probably essential. Physics is less obviously necessary, but increasingly medicine depends on technology and electromagnetic radiation is hugely important in xray, cat scans, eyes, burns etc. etc. So a good understanding of physics is vital.