How is the heart made healthier by means of cardiovascular exercise?
It grows in size.
It makes more ATP energy.
It pumps more blood during each beat.
all of the above

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

Amalignant tumor that originates within glandular tissue is called

The virus genome and viral proteins are assembled into virions (virus particles) during ) the lytic cycle and the lysogenic cycle in all known host organismsb) the lysogenic cycle onlyc) the lytic cycle onlyd) the lytic cycle in all host organisms but the lysogenic cycle only in bacteria