Biology
This molecule stores genetic information in most living organisms.
What is DNA?
This particle has a positive charge.
This system is responsible for pumping blood throughout the body.
What is the cardiovascular system?
These cells engulf and digest pathogens.
What are phagocytes?
These microorganisms lack a nucleus.
What are prokaryotes?
This structure separates the cell interior from the external environment.
What is the cell membrane?
This is the measure of how acidic or basic a solution is.
What is pH?
This blood vessel carries blood away from the heart.
What is an artery?
This immune organ filters blood and removes old red blood cells.
What is the spleen?
This structure allows bacteria to move.
What is a flagellum?
This process converts the genetic code in mRNA into a polypeptide chain.
What is mRNA?
This number represents the amount of substance containing Avogadro’s number of particles.
What is a mole?
This heart valve prevents backflow of blood from the left ventricle to the left atrium.
What is the mitral (bicuspid) valve?
These molecules display antigens on the surface of cells.
What are MHC molecules?
This term describes bacteria that require oxygen to grow.
What are obligate aerobes?
These bonds hold complementary DNA strands together.
What are hydrogen bonds?
This term describes the minimum energy required to start a reaction.
What is activation energy?
This hormone increases blood calcium levels by acting on bone.
What is parathyroid hormone?
This type of T cell directly kills virus-infected cells.
What are cytotoxic T cells (CD8+)?
This viral structure contains the genetic material.
What is a capsid?
This structural difference distinguishes RNA from DNA besides base composition.
What is the presence of a ribose sugar (instead of deoxyribose)?
This type of bonding involves attraction between ions of opposite charge.
What is an ionic bond?
This process returns excess interstitial fluid to the bloodstream.
What is lymphatic drainage?
This immune cell acts as a bridge between innate and adaptive immunity.
What is a dendritic cell?
This structure in Gram-negative bacteria acts as an endotoxin and triggers a strong inflammatory immune response.
What is lipopolysaccharide (LPS)?