Mixed venous blood samples can be taken from which of the following blood vessels?

A) pulmonary vein
B) inferior vena cava
C) pulmonary artery
D) aorta
E) superior vena cava


Answer: C) pulmonary artery

Biology & Microbiology

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In the absence of ATP synthase, animal cells would not be able to ____

a. create a proton gradient b. hydrolyze glucose to G3P c. carry out oxidative phosphorylation d. produce ATP e. carry out pyruvate oxidation

Biology & Microbiology

Which of the following statements is true about the production of the influenza vaccine?

A. A protein responsible for the H spikes of the flu virus is added to a harmless virus that infects insect cells, causing them to produce massive amounts of H spike protein. The extracted H spike protein is then purified and used to make vaccines. B. Viruses are injected into mammalian cells, then viral particles are extracted, purified, and used to make vaccines. C. Viruses are injected into fertilized eggs, incubated, then viral particles are extracted, purified, and used to make vaccines. D. All three methods describe different approaches used to make flu vaccines.

Biology & Microbiology

Females of various species shop around for males

that a. have the best burrows. b. offer superior nuptial gifts. c. make showy displays. d. include all of these. e. include none of these.

Biology & Microbiology

Why did animal life probably diversify during the "Cambrian explosion"?

a. predator-prey relationships stimulated animal diversity b. changing sea levels increased available land for animal habitat c. increases in atmospheric oxygen allowed larger body sizes d. the permian extinction left many vacant niches e. A and C

Biology & Microbiology