Veins from the ____ join together and form the hepatic portal vein

a. large intestine
b. liver
c. pancreas
d. small intestine
e. stomach


D

Biology & Microbiology

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Which statement best describes the action of polypeptide growth factors?

A) They bind to intracellular receptors and trigger intracellular signal transduction pathways. B) They bind to cell surface receptors and trigger intracellular signal transduction pathways. C) They bind to cell surface receptors that phosphorylate cyclins. D) They bind an intracellular receptor forming a complex that then acts as a transcription factor.

Biology & Microbiology

Where on this phylogenetic tree of primate evolution do you find evolution of the anthropoids?

A. No. 2 B. No. 3 C. No. 4 D. No. 5 E. No. 6

Biology & Microbiology

CO2 binds to ________ in the Calvin cycle.

A. water B. photosystem II C. glucose D. ribulose bisphosphate E. NADPH

Biology & Microbiology

One of the factors that helps animal-pollinated flowering plants transfer pollen to plants of the same species is that

A) pollinators are able to rapidly extract nectar from any species of flower, regardless of the pollinators' past or recent experience with a given flower type. B) most pollinators broadly use many different types of flowers. C) many pollinators have limited learning capacities and are most successful at obtaining food if they continue to visit the same type of flower after learning how to extract its nectar. D) pollinators only visit flowers that produce massive amounts of pollen.

Biology & Microbiology