If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent the cells from rupturing is
A) Cell wall
B) Slime layer
C) Capsule
D) Endospore
E) Cell membrane
A) Cell wall
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Most organisms develop from the embryonic gastrula that is composed of ________ germ cell layer(s)?
A. 1 B. 2 C. 3 D. 4 E. 5
Due to the lack of an enzyme to break down lipids, excess accumulation of lipids in the brain leads to a human disease called Tay-Sachs syndrome. The organelle(s) most likely to lack the proper enzyme needed for lipid breakdown is/are
A. lysosomes. B. tonoplasts. C. mitochondrion. D. Golgi apparatus. E. peroxisomes.
Answer the question using the accompanying figure. At which point in this action potential diagram are Na+ inactivation
gates opening?
a. A b. B c. C d. D e. E
Of the four chambers of the human heart, which has the thickest walls, and why?
What will be an ideal response?