Select all of the following statements that are true about lymph nodes.
1they are glands
2they are nerves
3they hold and distribute lymphocytes
4they make lymphocytes
5they filter the lymphatic system from harmful bacteria

Which of the following statements best describes the relationship between the environment and human health? a. the environment is the only factor that affects human health. b. many aspects of the environment can have an impact on human health. c. human health is impacted by changes in climate. d. the environment has no impact on human health. select the best answer from the choices provided

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

Which of the following is a cause of a dna mutation? o a. the linking of amino acid subunits into a long chain o b. the transcription of dna into rna o c. an error in the repair of damaged dna d. the diffusion of molecules across the cell membrane submit