What is inside a nucleus and has the function to make ribosomes that make proteins? please help I have a project due tonight!

Often, caries will develop in an area of the tooth that's not readily accessible. which cavity preparation form defines this? a. retention b. resistance c. outline d. convenience

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

People with one sickle cell allele are not likely to get malaria. what is this an example of?