Gap junctions in animal cells are most similar to ________ in plant cells?
A. plasmodesmata
B. primary cell walls
C. tight junctions
D. hemidesmosomes
E. middle lamella
A. plasmodesmata
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Studies show that ______ is the optimal amount of stress that people need to positively promote their health and sense of well-being, which coincides with _____ theory.
a. intensity; cognitive consistency b. distress; biological instinct c. eustress; arousal d. eustress; Maslow’s
Thyroid hormone is to amphibian metamorphosis as this compound is to insect molting.
A. estogen B. aldosterone C. ecdysone D. cortisol E. butterfly peptide
Which of the following membrane activities does NOT require the expenditure of energy by the cell?
a. active transport b. osmosis c. endocytosis d. exocytosis e. synthesis of more membrane
A type of asexual reproduction in angiosperms involving meiosis with no chromosome pairing and meiosis II does not occur is called
a. apomixis b. syngamy c. apogamy d. meiogenesis e. parthenogamy