Trace a drop of blood as it enters the vena cava and travels through the heart and body. Include the major vessels and the heart chambers and valves in your answer
What will be an ideal response?
Deoxygenated blood from the tissues enters the right atrium via the vena cava, which then flows through the tricuspid valve to the right ventricle and flows through the pulmonary semilunar valve to pulmonary arteries to lungs, where the blood is oxygenated. Blood returns to the heart through pulmonary veins to the left atrium and passes through the bicuspid valve to left ventricle, which pumps the oxygenated blood past the aortic semilunar valve into the aorta to the body.
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An animal that is evolved for rapid movement over the ground will have relatively ____ bones
a. heavy and thick
b. heavy c. light and thin d. light e. heavy and thin
The maintenance of a high ATP to ADP ratio within cells ensures that the:a
hydrolysis of ADP to ATP will be strongly exergonic. b. hydrolysis of ATP to ADP will be strongly exergonic. c. hydrolysis of ATP to ADP will be strongly endergonic. d. hydrolysis of ADP to ATP will be an energy releasing reaction. e. conversion of ADP to ATP will proceed spontaneously.
True/False: Cytotoxic T-cells directly kill the viruses found inside of infected cells.
What will be an ideal response?
Which is used in photosynthesis but not in cellular respiration?
A. NAD+ B. FAD C. cytochromes D. NADP+