Movement of molecules down their concentration gradient can drive the movement of a different molecule against its concentration gradient.
Answer the following statement true (T) or false (F)
True
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Heritable units of information about traits are called
__________. Fill in the blank(s) with the appropriate word(s).
Brown algae lack true roots but have similar structures called __________ that anchor them to the
substrate. a. stipes b. fronds c. holdfasts d. blades e. thalli
You need to identify a plant, but it is winter and the leaves have fallen to the ground and mixed with leaves from other plants. The parts of flowers, fruits, and seed leaves of germinating seeds are not available either. Your best clue to identify the plants as a monocot or a eudicot is to
A. determine if the roots lack phloem and xylem to identify it as a monocot. B. inspect the stem for woody bark, as only eudicots have woody tissue. C. cut the stem and if the vascular bundles are scattered in the stem, it is a monocot. D. determine if there are parallel xylem tubes in the stem to identify it as a monocot. E. cut the stem and if the vascular bundles are in a distinct ring, it is a monocot.
The flagella of ________ are not hollow, not enclosed in cytoplasmic membrane, and are powered by ATP
A. archaea B. bacteria C. eukaryotes D. both archaea and bacteria E. both archaea and eukaryotes