Which structure or structures function to open and close the stomata?

a. cuticle
b. mesophyll
c. palisade cells
d. guard cells
e. chloroplasts


d

Biology & Microbiology

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During inspiration (a.k.a. inhalation) of air into the lung of a mammal

A. the chest cavity has a positive pressure. B. the diaphragm moves upward. C. the diaphragm contracts. D. the rib cage moves down. E. the intercostal muscles relax.

Biology & Microbiology

Which bond or interaction would be difficult to disrupt when compounds are put into water?

A) covalent bonds between carbon atoms B) hydrogen bonds C) ionic bonds D) ionic and hydrogen bonds

Biology & Microbiology

For approximately two-thirds of human cancers, the rates of metastasis to different organs can be explained by ________ patterns

Fill in the blank with correct word.

Biology & Microbiology

Alcohols are used for

A) disinfection. B) sterilization. C) antisepsis. D) both sterilization and disinfection. E) both antisepsis and disinfection.

Biology & Microbiology