What cell structure defines the outer boundary of all cells, separating the cell's contents from its environment? (two words)

What will be an ideal response?


plasma membrane

Biology & Microbiology

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In biology lab, you are tasked with measuring the temperature of a small lizard, as it is moved from containers with different temperatures, light, and humidity. These elements require monitoring since lizards cannot self-generate heat. Therefore, lizards are an example of a(n)

A. mesophile. B. thermophile. C. ectotherm. D. amniote. E. endotherm.

Biology & Microbiology

Which soil type has the most minerals?

a. gravel b. sand c. clay d. humus e. silt

Biology & Microbiology

Which type of mating system do most animals exhibit?

A. polygyny B. monogamy C. polyandry D. None of these choices are correct.

Biology & Microbiology

Which number is the Nucleus?

What will be an ideal response?

Biology & Microbiology