From which chamber of the heart does the right ventricle receive blood?
(a) right atrium.
(b) left atrium.
(c) left ventricle.
(d) none of the above.
(a) right atrium.
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A fruit, such as a strawberry, that develops from tissues of the receptacle as well as the ovary would be
considered a(n)
a. aggregate fruit. b. accessory fruit. c. multiple fruit. d. simple fruit. e. compound fruit.
Which statement is NOT true?
a. Membranes are often perforated by proteins that extend through both sides of the membrane. b. Some membranes have proteins with channels that allow for the passage of hydrophilic substances. c. Hydrophilic substances have an easier time passing through membranes than do hydrophobic substances. d. The current concept of a membrane is best summarized by the fluid mosaic model. e. All of these.
Actin-binding proteins have all of the following functions except
a. filament initiation and polymerization. b. end capping. c. filament severing/depolymerization d. microfilament incorporation into the extracellular matrix
"Germination" can refer to two different events
A. the development of the flower, and the growth of the seedling from the seed. B. the development of the fruit from the ovary, and the growth of the seedling from the seed. C. the growth of the pollen tube into the embryo sac, and the growth of the seedling from the seed. D. the arrival of the pollen grain at the ovule, and the growth of the seedling from the seed.