The term used to describe the interrelationship between the living and non-living environments in an area is called a(n)
A. group.
B. community.
C. ecosystem.
D. ecological niche
C. ecosystem.
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The ascending portion of the loop of Henle is
A. permeable to water and impermeable to sodium. B. permeable to water and permeable to sodium. C. impermeable to water and permeable to sodium. D. impermeable to water and impermeable to sodium. E. the site of active transport of water.
The general structural and functional differences between a nerve and smooth muscle cell within an individual are a result of
A. the proteome (proteins in a cell) that differ between muscle and nerve cells. B. the genome (DNA in a cell) being different between muscle and nerve cells. C. the relative amounts of certain proteins between muscle and nerve cells. D. the proteome and the relative amounts of certain proteins that differ between muscle and nerve cells. E. the genome and the relative amounts of certain proteins that differ between muscle and nerve cells.
What are anabolic steroids?
A. Artificial chemicals that resemble human testosterone B. Medications that can be taken to increase the number of red blood cells C. Hormones that are only produced in the body following the ingestion of specific chemicals D. Hormones that are produced by the human body to increase muscle mass
The ribosomes in chloroplasts are ________, and in cytoplasm they are ________
a. 70S / 70S b. 70S / 80S c. 80S / 70S d. 80S / 80S