Referring to the above diagram of the brain, C
identifies which lobe of the cerebrum?
a. frontal lobe
b. parietal lobe
c. occipital lobe
d. temporal lobe
e. primary motor cortex
D
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What are plasmodesmata?
A) Nutrients that can be used only by plants B) Transport channels for sugars C) Root hairs that are adapted for mineral transport D) Pores that connect the cytosol of neighboring cells E) Organelles that manufacture ATP in roots
Prednisone is a glucocorticoid hormone that is sometimes prescribed to treat rheumatoid arthritis, asthma, and severe allergic reactions. If prednisone were taken for several weeks, which one of the following might occur?
A) Production of natural cortisol may decrease. B) Production of estrogen by the ovaries may decrease. C) Levels of thyroid hormone may be elevated. D) Levels of aldosterone may be elevated. E) Levels of parathyroid hormone may be decreased.
The half-life of carbon-14 is 5,600 years. A fossil that has one-eighth the normal proportion of carbon-14 to carbon-12 is probably
A. 11,200 years old. B. 16,800 years old. C. 5,600 years old. D. 22,400 years old. E. 2,800 years old.
Discuss biofilms with regard to their formation, unique properties, and significance to the environment and the human body. Explain how a biofilm differs from a typical bacterial colony growing on a nutrient agar medium.
What will be an ideal response?