Which organism has hemoglobin located in the fluid portion of the blood, giving it a red appearance?

A. grasshopper
B. bird
C. flatworm
D. human
E. earthworm


Answer: E

Biology & Microbiology

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Helicase PcrA follows classic Michaelis-Menten kinetics. In this reaction, ATP serves as a substrate for hydrolysis, while the DNA is most appropriately called the _____________

A. product. B. substrate. C. intermediate. D. coenzyme. E. ligand.

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When the atria of the heart are full of blood, the ____ valves are closed

a. atrioventricular b. aortic c. pulmonary d. pulmonary and aortic e. atrioventricular and aortic

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The ________ is the selective barrier of a root that determines which substances pass between the cortex and vascular tissue

A) epidermis B) endodermis C) cuticle D) xylem

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Labeling.The following statements refer to the figure below showing the general body plan of a plant. ? Figure 27.2 The plant parts ABOVE the line at "C" represent the __________.

A. ground tissue only B. root system C. shoot system D. stalk E. light-independent parts

Biology & Microbiology