Eleanor was tracing the pathway of food from the mouth to the release of fecies. which system was she primarily studying ? a. alimentaryb. gastrointestinalc. musculoskeletald. excretory

Which of the following processes does the body not use protein to perform? a. repairing muscles b. producing hormones c. making hemoglobin d. creating amino acids

Why would one lymph node in the neck be swollen and not the other? what causes them to swell?

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides. b) replication of their genomes does not involve proofreading. c) rna viruses can incorporate a variety of nonstandard bases. d) rna viruses are more sensitive to mutagens.