The realized niche of Semibalanus is

A. bigger than its fundamental niche.
B. the same as its fundamental niche.
C. the same as that of Chthalamus.
D. unrealized.
E. smaller than its fundamental niche and unrealized.


B. the same as its fundamental niche.

Biology & Microbiology

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Trial-and-error learning where an animal learns to associate its behavioral response with a reward or punishment is known as

A. operant conditioning. B. nonassociative learning. C. habituation. D. classical conditioning.

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Which characteristic promoted the utilization of lipids as the first cell membrane?

A) spontaneous degradation of the intracellular environment B) self-assembly into a simple membrane C) ability to form an impermeable membrane D) formation of a semi-solid membrane

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Currently, the most common method of vaccination is injection. Modern biotechnology is likely to make injection less common through the development of ________

A) gene editing B) edible vaccines C) fusion proteins D) biopharming

Biology & Microbiology