In plants like the fern, haploid cells produced by meiosis divide by ________, forming a multicellular haploid phase.
A. budding
B. mitosis
C. meiosis
D. binary fission
Answer: B
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The function of the vascular cambium (a type of meristem) is to:
A. produce new growth at the tip of stems B. produce secondary xylem and phloem C. produce only xylem to make wood D. produce only bark E. produce new leaves
Which of the following is the best explanation for why unsaturated fats tend to be more fluid at
biological temperatures than saturated fats?
a. Double bonds in saturated fats cause them to be denser and thus more solid than unsaturated fats. b. The presence of extra hydrogen atoms in saturated fats makes them lighter, so they float away from water and congeal together more easily than unsaturated fats. c. The presence of extra hydrogen atoms in saturated fats makes them denser than unsaturated fats, and denser materials tend to be more solid. d. Because unsaturated fats can still be hydrogenated but saturated fats cannot, the unsaturated fats are more reactive and thus more fluid. e. Kinks in the chain of an unsaturated fat create more disorder or irregularity in the structure of the molecule, making unsaturated fats harder to pack together than saturated fats.
The above figure represents which of the following
chromosomal changes:a. inversion b. deletion c. duplication d. translocation e. aneuploidy
Gibberellin-stimulated cell elongation occurs via cell wall acidification
____________________ Indicate whether the statement is true or false.